Annotation of www/security.html, Revision 1.415
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1.106 deraadt 17: <p>
1.294 david 18: <h2><font color="#e00000">Security</font></h2>
19: <hr>
1.1 deraadt 20:
1.406 deraadt 21: For security advisories for specific releases, click below:
1.294 david 22: <p>
1.406 deraadt 23:
1.225 deraadt 24: <a href="#20">2.0</a>,
25: <a href="#21">2.1</a>,
26: <a href="#22">2.2</a>,
27: <a href="#23">2.3</a>,
28: <a href="#24">2.4</a>,
29: <a href="#25">2.5</a>,
30: <a href="#26">2.6</a>,
31: <a href="#27">2.7</a>,
32: <a href="#28">2.8</a>,
33: <a href="#29">2.9</a>,
34: <a href="#30">3.0</a>,
35: <a href="#31">3.1</a>,
1.246 deraadt 36: <a href="#32">3.2</a>,
1.261 david 37: <a href="#33">3.3</a>,
1.387 miod 38: <a href="#34">3.4</a>,
1.388 miod 39: <a href="#35">3.5</a>,
1.406 deraadt 40: <a href="#36">3.6</a>,
1.365 deraadt 41: <br>
1.318 deraadt 42: <a href="#37">3.7</a>,
1.321 brad 43: <a href="#38">3.8</a>,
1.334 brad 44: <a href="#39">3.9</a>,
1.348 merdely 45: <a href="#40">4.0</a>,
46: <a href="#41">4.1</a>,
1.357 brad 47: <a href="#42">4.2</a>,
1.365 deraadt 48: <a href="#43">4.3</a>,
1.377 tobias 49: <a href="#44">4.4</a>,
1.378 jasper 50: <a href="#45">4.5</a>,
1.385 jasper 51: <a href="#46">4.6</a>,
1.387 miod 52: <a href="#47">4.7</a>,
53: <a href="#48">4.8</a>,
1.390 sthen 54: <a href="#49">4.9</a>,
55: <a href="#50">5.0</a>,
1.394 lum 56: <a href="#51">5.1</a>,
1.395 sthen 57: <a href="#52">5.2</a>,
1.398 sthen 58: <a href="#53">5.3</a>,
1.406 deraadt 59: <br>
1.405 deraadt 60: <a href="#54">5.4</a>,
61: <a href="#55">5.5</a>.
1.406 deraadt 62: <br>
1.56 deraadt 63: <hr>
64:
1.294 david 65: <a name="goals"></a>
1.278 deraadt 66: <ul>
1.406 deraadt 67: <li><h3><font color="#e00000">Goals</font></h3><p>
1.22 deraadt 68:
1.14 deraadt 69: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 70: ONE in the industry for security (if we are not already there). Our
71: open software development model permits us to take a more
72: uncompromising view towards increased security than Sun, SGI, IBM, HP,
73: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 74: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 75: cryptography</a>, we are able to take cryptographic approaches towards
76: fixing security problems.<p>
1.18 deraadt 77:
1.288 matthieu 78: <a name="disclosure"></a>
1.294 david 79: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 80:
1.45 deraadt 81: Like many readers of the
1.196 jufi 82: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 83: BUGTRAQ mailing list</a>,
1.106 deraadt 84: we believe in full disclosure of security problems. In the
85: operating system arena, we were probably the first to embrace
86: the concept. Many vendors, even of free software, still try
87: to hide issues from their users.<p>
88:
89: Security information moves very fast in cracker circles. On the other
90: hand, our experience is that coding and releasing of proper security
91: fixes typically requires about an hour of work -- very fast fix
92: turnaround is possible. Thus we think that full disclosure helps the
93: people who really care about security.<p>
94:
1.288 matthieu 95: <a name="process"></a>
1.294 david 96: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 97:
1.12 deraadt 98: Our security auditing team typically has between six and twelve
1.45 deraadt 99: members who continue to search for and fix new security holes. We
100: have been auditing since the summer of 1996. The process we follow to
101: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 102: every critical software component. We are not so much looking for
103: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 104: years later someone discovers the problem used to be a security
1.106 deraadt 105: issue, and we fixed it because it was just a bug, well, all the
106: better. Flaws have been found in just about every area of the system.
107: Entire new classes of security problems have been found during our
108: audit, and often source code which had been audited earlier needs
109: re-auditing with these new flaws in mind. Code often gets audited
110: multiple times, and by multiple people with different auditing
111: skills.<p>
1.12 deraadt 112:
1.94 deraadt 113: Some members of our security auditing team worked for Secure Networks,
114: the company that made the industry's premier network security scanning
115: software package Ballista (Secure Networks got purchased by Network
116: Associates, Ballista got renamed to Cybercop Scanner, and well...)
117: That company did a lot of security research, and thus fit in well
1.106 deraadt 118: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
119: colours since day 1.<p>
1.31 deraadt 120:
1.34 deraadt 121: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 122: In most cases we have found that the determination of exploitability
123: is not an issue. During our ongoing auditing process we find many
124: bugs, and endeavor to fix them even though exploitability is not
125: proven. We fix the bug, and we move on to find other bugs to fix. We
126: have fixed many simple and obvious careless programming errors in code
127: and only months later discovered that the problems were in fact
128: exploitable. (Or, more likely someone on
1.197 jufi 129: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 130: would report that other operating systems were vulnerable to a `newly
131: discovered problem', and then it would be discovered that OpenBSD had
132: been fixed in a previous release). In other cases we have been saved
133: from full exploitability of complex step-by-step attacks because we
134: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 135: managed such a success is the lpd advisory that Secure Networks put out.
136: <p>
1.29 deraadt 137:
1.288 matthieu 138: <a name="newtech"></a>
1.294 david 139: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 140:
141: As we audit source code, we often invent new ways of solving problems.
142: Sometimes these ideas have been used before in some random application
143: written somewhere, but perhaps not taken to the degree that we do.
144: <p>
145:
146: <ul>
147: <li>strlcpy() and strlcat()
148: <li>Memory protection purify
149: <ul>
150: <li>W^X
151: <li>.rodata segment
152: <li>Guard pages
153: <li>Randomized malloc()
154: <li>Randomized mmap()
155: <li>atexit() and stdio protection
156: </ul>
1.295 otto 157: <li>Privilege separation
1.278 deraadt 158: <li>Privilege revocation
159: <li>Chroot jailing
160: <li>New uids
161: <li>ProPolice
162: <li>... and others
163: </ul>
164: <p>
165:
1.294 david 166: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 167:
1.45 deraadt 168: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 169: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 170: commonplace in security forums like
1.197 jufi 171: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 172:
1.45 deraadt 173: The most intense part of our security auditing happened immediately
1.80 espie 174: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 175: over the last third of 1996 and first half of 1997. Thousands (yes,
176: thousands) of security issues were fixed rapidly over this year-long
177: period; bugs like the standard buffer overflows, protocol
178: implementation weaknesses, information gathering, and filesystem
179: races. Hence most of the security problems that we encountered were
180: fixed before our 2.1 release, and then a far smaller number needed
181: fixing for our 2.2 release. We do not find as many problems anymore,
182: it is simply a case of diminishing returns. Recently the security
183: problems we find and fix tend to be significantly more obscure or
184: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 185:
1.35 deraadt 186: <ul>
1.45 deraadt 187: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 188: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 189: to search for more complicated exploits, so we will too.
190: <li>Finding and fixing subtle flaws in complicated software is
191: a lot of fun.
1.35 deraadt 192: </ul>
1.106 deraadt 193: <p>
1.15 deraadt 194:
1.14 deraadt 195: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 196: to find and fix new security flaws.<p>
1.12 deraadt 197:
1.288 matthieu 198: <a name="default"></a>
1.294 david 199: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 200:
201: To ensure that novice users of OpenBSD do not need to become security
202: experts overnight (a viewpoint which other vendors seem to have), we
203: ship the operating system in a Secure by Default mode. All non-essential
204: services are disabled. As the user/administrator becomes more familiar
205: with the system, he will discover that he has to enable daemons and other
206: parts of the system. During the process of learning how to enable a new
207: service, the novice is more likely to learn of security considerations.<p>
208:
209: This is in stark contrast to the increasing number of systems that
210: ship with NFS, mountd, web servers, and various other services enabled
211: by default, creating instantaneous security problems for their users
212: within minutes after their first install.<p>
213:
1.288 matthieu 214: <a name="crypto"></a>
1.294 david 215: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 216:
217: And of course, since the OpenBSD project is based in Canada, it is possible
218: for us to integrate cryptography. For more information, read the page
1.116 deraadt 219: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 220:
1.294 david 221: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 222:
1.407 deraadt 223: <li><a name="55"></a>
224: <h3><font color="#e00000">OpenBSD 5.5 Security Advisories</font></h3>
225: These are the OpenBSD 5.5 advisories -- all these problems are solved
226: in <a href=anoncvs.html>OpenBSD current</a> and the
227: <a href=stable.html>patch branch</a>.
228: <p>
229:
230: <ul>
231: <li><a href="errata55.html#001_icmp">March 15, 2014:
232: Memory corruption happens during
233: ICMP reflection handling. ICMP reflection is disabled by default.</a>
1.408 deraadt 234: <li><a href="errata55.html#002_openssl">April 7, 2014:
235: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
236: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.409 jca 237: <li><a href="errata55.html#003_ftp">April 9, 2014: ftp(1) defect,
238: failure to check the server hostname when connecting to an https
239: website, allowing any trusted CA-signed certificate to impersonate
240: any other website.</a>
1.410 deraadt 241: <li><a href="errata55.html#004_openssl">April 12, 2014:
242: A use-after-free race condition in OpenSSL's read buffer may permit
243: an attacker to inject data from one connection into another.</a>
1.411 deraadt 244: <li><a href="errata55.html#005_openssl">May 1, 2014:
245: An attacker can trigger generation of an SSL alert which could
246: cause a null pointer dereference.</a>
1.414 deraadt 247: <li><a href="errata55.html#006_libXfont">May 24, 2014:
248: X Font Service Protocol & Font metadata file handling issues
249: in libXfont.</a>
1.415 ! deraadt 250: <li><a href="errata55.html#007_sendmail">June 6, 2014:
! 251: Sendmail was not properly closing file descriptions
! 252: before executing programs.</a>
1.407 deraadt 253: </ul>
1.398 sthen 254:
1.407 deraadt 255: <li><a name="54"></a>
1.398 sthen 256: <h3><font color="#e00000">OpenBSD 5.4 Security Advisories</font></h3>
257: These are the OpenBSD 5.4 advisories -- all these problems are solved
258: in <a href=anoncvs.html>OpenBSD current</a> and the
259: <a href=stable.html>patch branch</a>.
260:
261: <p>
262: <ul>
263: <li><a href="errata54.html#002_sshgcm">November 7, 2013:
264: Memory corruption in post-authentication sshd process if AES-GCM cipher
265: is selected</a>
266: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
267: <li><a href="errata54.html#004_nginx">November 21, 2013:
268: Security restriction bypass in certain nginx(8) configurations</a>
269: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 270: <li><a href="errata54.html#006_libXfont">January 10, 2014:
1.400 matthieu 271: Buffer overflow in parsing of BDF font files</a>
1.401 matthieu 272: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 deraadt 273: <li><a href="errata54.html#007_openssl">April 7, 2014:
274: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
275: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.410 deraadt 276: <li><a href="errata54.html#008_openssl">April 12, 2014:
277: A use-after-free race condition in OpenSSL's read buffer may permit
278: an attacker to inject data from one connection into another.</a>
1.411 deraadt 279: <li><a href="errata54.html#009_openssl">May 1, 2014:
280: An attacker can trigger generation of an SSL alert which could
281: cause a null pointer dereference.</a>
1.414 deraadt 282: <li><a href="errata54.html#010_libXfont">May 24, 2014:
283: X Font Service Protocol & Font metadata file handling issues
284: in libXfont.</a>
1.415 ! deraadt 285: <li><a href="errata54.html#011_sendmail">June 6, 2014:
! 286: Sendmail was not properly closing file descriptions
! 287: before executing programs.</a>
1.398 sthen 288: </ul>
289:
1.412 miod 290: <br><p><b>
291: OpenBSD 5.3 and earlier releases are not supported anymore. The following
292: paragraphs only list advisories issued while they were maintained; these
293: releases are likely to be affected by the advisories for more recent releases.
294: </b>
295: <p>
296:
1.407 deraadt 297: <li><a name="53"></a>
1.395 sthen 298: <h3><font color="#e00000">OpenBSD 5.3 Security Advisories</font></h3>
299: These are the OpenBSD 5.3 advisories -- all these problems are solved
300: in <a href=anoncvs.html>OpenBSD current</a> and the
301: <a href=stable.html>patch branch</a>.
302:
303: <p>
304: <ul>
1.398 sthen 305: <li><a href="errata53.html#009_sshgcm">November 7, 2013:
306: Memory corruption in post-authentication sshd process if AES-GCM cipher
307: is selected</a>
308: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
309: <li><a href="errata53.html#011_nginx">November 21, 2013:
310: Security restriction bypass in certain nginx(8) configurations</a>
311: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 312: <li><a href="errata53.html#013_libXfont">January 10, 2014:
1.402 matthieu 313: Buffer overflow in parsing of BDF font files</a>
314: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 deraadt 315: <li><a href="errata53.html#014_openssl">April 7, 2014:
316: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
317: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.410 deraadt 318: <li><a href="errata54.html#015_openssl">April 12, 2014:
319: A use-after-free race condition in OpenSSL's read buffer may permit
320: an attacker to inject data from one connection into another.</a>
1.395 sthen 321: </ul>
1.399 deraadt 322:
1.395 sthen 323: <li>
1.393 sthen 324: <a name="52"></a>
325:
326: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
327: These are the OpenBSD 5.2 advisories -- all these problems are solved
328: in <a href=anoncvs.html>OpenBSD current</a> and the
329: <a href=stable.html>patch branch</a>.
330:
331: <p>
332: <ul>
333: None yet!
334: </ul>
335:
336: <li>
1.390 sthen 337: <a name="51"></a>
338:
339: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
340: These are the OpenBSD 5.1 advisories -- all these problems are solved
341: in <a href=anoncvs.html>OpenBSD current</a> and the
342: <a href=stable.html>patch branch</a>.
343:
344: <p>
345: <ul>
1.393 sthen 346: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
347: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 348: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 349: </ul>
350:
351: <li>
1.388 miod 352: <a name="50"></a>
353:
354: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
355: These are the OpenBSD 5.0 advisories -- all these problems are solved
356: in <a href=anoncvs.html>OpenBSD current</a> and the
357: <a href=stable.html>patch branch</a>.
358:
359: <p>
360: <ul>
1.393 sthen 361: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
362: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 363: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 364: </ul>
365:
366: <li>
1.387 miod 367: <a name="49"></a>
368:
369: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
370: These are the OpenBSD 4.9 advisories -- all these problems are solved
371: in <a href=anoncvs.html>OpenBSD current</a> and the
372: <a href=stable.html>patch branch</a>.
373:
374: <p>
375: <ul>
376: None yet!
377: </ul>
378:
379: <li>
380: <a name="48"></a>
381:
382: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
383: These are the OpenBSD 4.8 advisories -- all these problems are solved
384: in <a href=anoncvs.html>OpenBSD current</a> and the
385: <a href=stable.html>patch branch</a>.
386:
387: <p>
388: <ul>
389: <li><a href="errata48.html#009_pf">February 16, 2011:
390: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
391: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
392: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
393: prefixes "10.1.1.1/30") are not affected.</a>
394: <li><a href="errata48.html#008_openssl">February 11, 2011:
395: An incorrectly formatted ClientHello handshake message could cause
396: OpenSSL to parse past the end of the message. An attacker could use
397: this flaw to trigger an invalid memory access, causing a crash of an
398: application linked to OpenSSL. As well, certain applications may expose
399: the contents of parsed OCSP extensions, specifically the OCSP nonce
400: extension.
401: <br>
402: Applications are only affected if they act as a server and call
403: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
404: that nothing in the base OS uses this. Apache httpd started using this
405: in v2.3.3; this is newer than the version in ports.</a>
406: <li><a href="errata48.html#005_pf">December 17, 2010:
407: Insufficent initialization of the pf rule structure in the ioctl
408: handler may allow userland to modify kernel memory. By default root
409: privileges are needed to add or modify pf rules.</a>
410: </ul>
411:
412: <li>
1.385 jasper 413: <a name="47"></a>
414:
415: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
416: These are the OpenBSD 4.7 advisories -- all these problems are solved
417: in <a href=anoncvs.html>OpenBSD current</a> and the
418: <a href=stable.html>patch branch</a>.
419:
420: <p>
421: <ul>
1.387 miod 422: <li><a href="errata47.html#013_pf">February 16, 2011:
423: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
424: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
425: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
426: prefixes "10.1.1.1/30") are not affected.</a>
427: <li><a href="errata47.html#012_openssl">February 11, 2011:
428: An incorrectly formatted ClientHello handshake message could cause
429: OpenSSL to parse past the end of the message. An attacker could use
430: this flaw to trigger an invalid memory access, causing a crash of an
431: application linked to OpenSSL. As well, certain applications may expose
432: the contents of parsed OCSP extensions, specifically the OCSP nonce
433: extension.
434: <br>
435: Applications are only affected if they act as a server and call
436: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
437: that nothing in the base OS uses this. Apache httpd started using this
438: in v2.3.3; this is newer than the version in ports.</a>
439: <li><a href="errata47.html#009_pf">December 17, 2010:
440: Insufficent initialization of the pf rule structure in the ioctl
441: handler may allow userland to modify kernel memory. By default root
442: privileges are needed to add or modify pf rules.</a>
443: <li><a href="errata47.html#004_pfsync">April 23, 2010:
444: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 445: <li><a href="errata47.html#003_openssl">April 14, 2010:
446: In TLS connections, certain incorrectly formatted records can
447: cause an OpenSSL client or server to crash due to a read
1.392 tobias 448: attempt at NULL.</a>
1.385 jasper 449: </ul>
450:
451: <li>
1.378 jasper 452: <a name="46"></a>
453:
454: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
455: These are the OpenBSD 4.6 advisories -- all these problems are solved
456: in <a href=anoncvs.html>OpenBSD current</a> and the
457: <a href=stable.html>patch branch</a>.
458:
459: <p>
460: <ul>
1.385 jasper 461: <li><a href="errata46.html#010_openssl">April 14, 2010:
462: In TLS connections, certain incorrectly formatted records can
463: cause an OpenSSL client or server to crash due to a read
1.392 tobias 464: attempt at NULL.</a>
1.384 jasper 465: <li><a href="errata46.html#006_openssl">March 12, 2010:
466: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 467: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 468: <li><a href="errata46.html#004_openssl">November 26, 2009:
469: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 470: related to renegotiation.</a>
1.378 jasper 471: </ul>
1.382 tobias 472:
473: <li>
1.373 djm 474: <a name="45"></a>
475:
476: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
477: These are the OpenBSD 4.5 advisories -- all these problems are solved
478: in <a href=anoncvs.html>OpenBSD current</a> and the
479: <a href=stable.html>patch branch</a>.
480:
481: <p>
482: <ul>
1.385 jasper 483: <li><a href="errata45.html#016_openssl">April 14, 2010:
484: In TLS connections, certain incorrectly formatted records can
485: cause an OpenSSL client or server to crash due to a read
1.392 tobias 486: attempt at NULL.</a>
1.385 jasper 487: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 488: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 489: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 490: <li><a href="errata45.html#010_openssl">November 26, 2009:
491: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 492: related to renegotiation.</a>
1.373 djm 493: </ul>
494:
495: <li>
1.365 deraadt 496: <a name="44"></a>
497:
498: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
499: These are the OpenBSD 4.4 advisories -- all these problems are solved
500: in <a href=anoncvs.html>OpenBSD current</a> and the
501: <a href=stable.html>patch branch</a>.
502:
503: <p>
504: <ul>
1.372 millert 505: <li><a href="errata44.html#011_sudo">February 22, 2009:
506: sudo(8) may allow a user listed in sudoers to run a command
507: as a different user than their access rule specifies when a Unix
508: group is used in the RunAs portion of the rule.</a>
1.370 djm 509: <li><a href="errata44.html#008_bind">January 15, 2009:
510: named(8) suffered from a similar logic error that may allow
511: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 512: <li><a href="errata44.html#007_openssl">January 9, 2009:
513: OpenSSL suffered from some logic errors that allowed bypass
514: of DSA/ECDSA certificate validation.</a>
1.367 brad 515: <li><a href="errata44.html#001_ndp">November 2, 2008:
516: The Neighbor Discovery Protocol (ndp) did not correctly verify
517: neighbor solicitation requests maybe allowing a nearby attacker
518: to intercept traffic.</a>
1.365 deraadt 519: </ul>
520:
521: <li>
1.357 brad 522: <a name="43"></a>
523:
524: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
525: These are the OpenBSD 4.3 advisories -- all these problems are solved
526: in <a href=anoncvs.html>OpenBSD current</a> and the
527: <a href=stable.html>patch branch</a>.
528:
529: <p>
530: <ul>
1.372 millert 531: <li><a href="errata43.html#011_sudo">February 22, 2009:
532: sudo(8) may allow a user listed in sudoers to run a command
533: as a different user than their access rule specifies when a Unix
534: group is used in the RunAs portion of the rule.</a>
1.370 djm 535: <li><a href="errata43.html#008_bind">January 15, 2009:
536: named(8) suffered from a similar logic error that may allow
537: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 538: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 539: OpenSSL suffered from some logic errors that allowed bypass
540: of DSA/ECDSA certificate validation.</a>
1.382 tobias 541: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 542: The Neighbor Discovery Protocol (ndp) did not correctly verify
543: neighbor solicitation requests maybe allowing a nearby attacker
544: to intercept traffic.</a>
1.362 brad 545: <li><a href="errata43.html#004_bind">July 23, 2008:
546: A vulnerability has been found with BIND.</a>
1.361 brad 547: <li><a href="errata43.html#003_xorg">July 15, 2008:
548: Multiple vulnerabilities in X.Org.</a>
1.359 brad 549: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 550: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 551: <li><a href="errata43.html#001_openssh">March 30, 2008:
552: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 553: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 554: </ul>
555:
556: <li>
1.348 merdely 557: <a name="42"></a>
558: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
559: These are the OpenBSD 4.2 advisories -- all these problems are solved
560: in <a href=anoncvs.html>OpenBSD current</a> and the
561: <a href=stable.html>patch branch</a>.
562:
563: <p>
564: <ul>
1.364 tobias 565: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 566: The Neighbor Discovery Protocol (ndp) did not correctly verify
567: neighbor solicitation requests maybe allowing a nearby attacker
568: to intercept traffic.</a>
1.362 brad 569: <li><a href="errata42.html#013_bind">July 23, 2008:
570: A vulnerability has been found with BIND.</a>
1.361 brad 571: <li><a href="errata42.html#012_xorg2">July 15, 2008:
572: Multiple vulnerabilities in X.Org.</a>
1.359 brad 573: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 574: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 575: <li><a href="errata42.html#010_openssh">March 30, 2008:
576: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 577: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 578: <li><a href="errata42.html#009_ppp">March 7, 2008:
579: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 580: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
581: Multiple vulnerabilities in X.Org.</a>
1.351 okan 582: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
583: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 584: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 585: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 586: </ul>
587:
588: <li>
1.346 matthieu 589: <a name="41"></a>
590:
591: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
592: These are the OpenBSD 4.1 advisories -- all these problems are solved
593: in <a href=anoncvs.html>OpenBSD current</a> and the
594: <a href=stable.html>patch branch</a>.
595:
596: <p>
597: <ul>
1.359 brad 598: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 599: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 600: <li><a href="errata41.html#015_openssh">March 30, 2008:
601: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 602: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 603: <li><a href="errata41.html#014_ppp">March 7, 2008:
604: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 605: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
606: Multiple vulnerabilities in X.Org.</a>
607: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
608: The SSL_get_shared_ciphers() function in OpenSSL contains
609: an off-by-one overflow.</a>
1.350 deraadt 610: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 611: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 612: <li><a href="errata41.html#009_file">Jul 9, 2007:
613: Fix possible heap overflow in file(1).</a>
1.346 matthieu 614: <li><a href="errata41.html#005_route6">Apr 27, 2007:
615: IPv6 type 0 route headers can be used to mount a DoS attack
616: against hosts and networks.</a>
617: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
618: Multiple vulnerabilities in X.Org.</a>
619: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
620: Incorrect mbuf handling for ICMP6 packets.</a>
621: </ul>
622:
623: <li>
1.334 brad 624: <a name="40"></a>
625: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
626: These are the OpenBSD 4.0 advisories -- all these problems are solved
627: in <a href=anoncvs.html>OpenBSD current</a> and the
628: <a href=stable.html>patch branch</a>.
629:
630: <p>
631: <ul>
1.382 tobias 632: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
633: The SSL_get_shared_ciphers() function in OpenSSL contains an
634: off-by-one overflow.</a>
1.350 deraadt 635: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 636: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 637: <li><a href="errata40.html#015_file">Jul 9, 2007:
638: Fix possible heap overflow in file(1).</a>
1.343 deraadt 639: <li><a href="errata40.html#012_route6">Apr 23, 2007:
640: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 641: against hosts and networks.</a>
1.342 mbalmer 642: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
643: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 644: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
645: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 646: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 647: Insufficient validation in vga(4) may allow an attacker to gain
648: root privileges on some i386 systems.</a>
1.339 deraadt 649: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 650: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 651: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 652: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
653: found by Chris Evans.</a>
1.339 deraadt 654: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 655: Several problems have been found in OpenSSL.</a>
1.339 deraadt 656: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 657: httpd(8) does not sanitize the Expect header from an HTTP request
658: when it is reflected back in an error message, which might allow
659: cross-site scripting (XSS) style attacks.</a>
660: </ul>
661:
662: <li>
1.321 brad 663: <a name="39"></a>
664:
665: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
666: These are the OpenBSD 3.9 advisories -- all these problems are solved
667: in <a href=anoncvs.html>OpenBSD current</a> and the
668: <a href=stable.html>patch branch</a>.
669:
670: <p>
671: <ul>
1.343 deraadt 672: <li><a href="errata39.html#022_route6">Apr 23, 2007:
673: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 674: against hosts and networks.</a>
1.342 mbalmer 675: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
676: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 677: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
678: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 679: <li><a href="errata39.html#agp">Jan 3, 2007:
680: Insufficient validation in vga(4) may allow an attacker to gain
681: root privileges on some i386 systems.</a>
1.336 brad 682: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 683: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 684: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 685: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 686: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 687: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 688: found by Chris Evans.</a>
1.333 deraadt 689: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 690: Several problems have been found in OpenSSL.</a>
1.333 deraadt 691: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 692: httpd(8) does not sanitize the Expect header from an HTTP request
693: when it is reflected back in an error message, which might allow
694: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 695: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 696: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
697: possible for an attacker to construct an invalid signature which
698: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 699: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 700: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 701: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 702: Due to the failure to correctly validate LCP configuration option
703: lengths, it is possible for an attacker to send LCP packets via an
704: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 705: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 706: A problem in isakmpd(8) caused IPsec to run partly without replay
707: protection.</a>
1.333 deraadt 708: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 709: It is possible to cause the kernel to panic when more than the default
710: number of sempahores have been allocated.</a>
1.333 deraadt 711: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 712: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
713: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
714: option.</a>
1.333 deraadt 715: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 716: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 717: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 718: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
719: overflow.</a>
1.333 deraadt 720: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 721: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 722: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 723: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 724: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 725: A race condition has been reported to exist in the handling by sendmail
726: of asynchronous signals.</a>
727: </ul>
728:
729: <li>
1.318 deraadt 730: <a name="38"></a>
731:
732: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
1.413 matthieu 733: These are the OpenBSD 3.8 advisories -- all these problems are solved
1.318 deraadt 734: in <a href=anoncvs.html>OpenBSD current</a> and the
735: <a href=stable.html>patch branch</a>.
736:
737: <p>
738: <ul>
1.332 brad 739: <li><a href="errata38.html#ssh2">Oct 12, 2006:
740: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 741: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 742: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 743: found by Chris Evans.</a>
744: <li><a href="errata38.html#openssl2">Oct 7, 2006:
745: Several problems have been found in OpenSSL.</a>
746: <li><a href="errata38.html#httpd2">Oct 7, 2006:
747: httpd(8) does not sanitize the Expect header from an HTTP request
748: when it is reflected back in an error message, which might allow
749: cross-site scripting (XSS) style attacks.</a>
1.329 brad 750: <li><a href="errata38.html#openssl">Sep 8, 2006:
751: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
752: possible for an attacker to construct an invalid signature which
753: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 754: <li><a href="errata38.html#bind">Sep 8, 2006:
755: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 756: <li><a href="errata38.html#sppp">Sep 2, 2006:
757: Due to the failure to correctly validate LCP configuration option
758: lengths, it is possible for an attacker to send LCP packets via an
759: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 760: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
761: A problem in isakmpd(8) caused IPsec to run partly without replay
762: protection.</a>
763: <li><a href="errata38.html#sem">Aug 25, 2006:
764: It is possible to cause the kernel to panic when more than the default
765: number of sempahores have been allocated.</a>
766: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
767: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
768: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
769: option.</a>
770: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
771: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 772: <li><a href="errata38.html#httpd">Jul 30, 2006:
773: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
774: overflow.</a>
1.324 brad 775: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
776: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 777: <li><a href="errata38.html#xorg">May 2, 2006:
778: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 779: <li><a href="errata38.html#sendmail">Mar 25, 2006:
780: A race condition has been reported to exist in the handling by sendmail
781: of asynchronous signals.</a>
782: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 783: Josh Bressers has reported a weakness in OpenSSH caused due to the
784: insecure use of the system(3) function in scp(1) when performing copy
785: operations using filenames that are supplied by the user from the
786: command line.</a>
1.321 brad 787: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 788: Do not allow users to trick suid programs into re-opening files via
789: /dev/fd.</a>
1.321 brad 790: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 791: A buffer overflow has been found in the Perl interpreter with the
792: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 793: </ul>
794:
795: <li>
1.312 david 796: <a name="37"></a>
797:
798: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
1.413 matthieu 799: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 800: in <a href="anoncvs.html">OpenBSD current</a>. The
801: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
802: you should update your machine.
1.312 david 803:
804: <p>
805: <ul>
1.322 brad 806: <li><a href="errata37.html#xorg">May 2, 2006:
807: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 808: <li><a href="errata37.html#sendmail">Mar 25, 2006:
809: A race condition has been reported to exist in the handling by sendmail
810: of asynchronous signals.</a>
1.320 brad 811: <li><a href="errata37.html#ssh">Feb 12, 2006:
812: Josh Bressers has reported a weakness in OpenSSH caused due to the
813: insecure use of the system(3) function in scp(1) when performing copy
814: operations using filenames that are supplied by the user from the
815: command line.</a>
1.319 brad 816: <li><a href="errata37.html#fd">Jan 5, 2006:
817: Do not allow users to trick suid programs into re-opening files via
818: /dev/fd.</a>
819: <li><a href="errata37.html#perl">Jan 5, 2006:
820: A buffer overflow has been found in the Perl interpreter with the
821: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 822: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 823: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 824: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 825: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 826: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 827: Fix a race condition in sudo(8) that could allow a user
1.315 millert 828: to run arbitrary commands.</a>
1.318 deraadt 829: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 830: Fix a buffer overflow, memory leaks, and NULL pointer
831: dereference in cvs(1).</a>
1.312 david 832: </ul>
833:
834: <li>
1.301 miod 835: <a name="36"></a>
836:
837: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
1.413 matthieu 838: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 839: in <a href="anoncvs.html">OpenBSD current</a>. The
840: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
841: you should update your machine.
1.301 miod 842:
843: <p>
1.302 markus 844: <ul>
1.317 millert 845: <li><a href="errata36.html#libz2">Jul 21, 2005:
846: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 847: <li><a href="errata36.html#libz">Jul 6, 2005:
848: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 849: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 850: Fix a race condition in sudo(8) that could allow a user
1.315 millert 851: to run arbitrary commands.</a>
1.311 deraadt 852: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 853: Fix a buffer overflow, memory leaks, and NULL pointer
854: dereference in cvs(1).</a>
1.311 deraadt 855: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 856: Due to buffer overflows in telnet(1), a malicious
857: server or man-in-the-middle attack could allow
858: execution of arbitrary code with the privileges of
859: the user invoking telnet(1).</a>
1.311 deraadt 860: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 861: More stringent checking should be done in the copy(9)
862: functions to prevent their misuse.</a>
1.311 deraadt 863: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 864: More stringent checking should be done in the copy(9)
865: functions to prevent their misuse.</a>
1.311 deraadt 866: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 867: httpd(8)'s mod_include module fails to properly validate
868: the length of user supplied tag strings prior to copying
1.305 brad 869: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 870: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 871: On systems running isakmpd(8) it is possible for a local
872: user to cause kernel memory corruption and system panic by
1.303 markus 873: setting ipsec(4) credentials on a socket.</a>
1.302 markus 874: </ul>
1.301 miod 875:
876: <li>
1.288 matthieu 877: <a name="35"></a>
1.279 deraadt 878:
1.294 david 879: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.413 matthieu 880: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 881: in <a href="anoncvs.html">OpenBSD current</a>. The
882: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
883: you should update your machine.
1.279 deraadt 884:
885: <p>
886: <ul>
1.310 brad 887: <li><a href="errata35.html#cvs4">Apr 28, 2005:
888: Fix a buffer overflow, memory leaks, and NULL pointer
889: dereference in cvs(1).</a>
1.309 brad 890: <li><a href="errata35.html#telnet">Mar 30, 2005:
891: Due to buffer overflows in telnet(1), a malicious
892: server or man-in-the-middle attack could allow
893: execution of arbitrary code with the privileges of
894: the user invoking telnet(1).</a>
1.308 brad 895: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 896: More stringent checking should be done in the copy(9)
897: functions to prevent their misuse.</a>
1.306 brad 898: <li><a href="errata35.html#locore">Feb 28, 2005:
899: More stringent checking should be done in the copy(9)
900: functions to prevent their misuse.</a>
1.304 brad 901: <li><a href="errata35.html#httpd3">Jan 12, 2005:
902: httpd(8)'s mod_include module fails to properly validate
903: the length of user supplied tag strings prior to copying
1.305 brad 904: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 905: <li><a href="errata35.html#pfkey">Dec 14, 2004:
906: On systems running isakmpd(8) it is possible for a local
907: user to cause kernel memory corruption and system panic by
1.303 markus 908: setting ipsec(4) credentials on a socket.</a>
1.301 miod 909: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 910: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 911: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 912: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 913: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 914: httpd(8)'s mod_rewrite module can be made to write one zero byte in
915: an arbitrary memory position outside of a char array, causing a DoS
916: or possibly buffer overflows.</a>
1.301 miod 917: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 918: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 919: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 920: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 921: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 922: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 923: Multiple remote vulnerabilities have been found in the cvs(1)
924: server which can be used by CVS clients to crash or execute
1.293 brad 925: arbitrary code on the server.</a>
1.301 miod 926: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 927: kdc(8) performs inadequate checking of request fields, leading
928: to the possibility of principal impersonation from other
929: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 930: <li><a href="errata35.html#xdm"> May 26, 2004:
1.413 matthieu 931: xdm(1) ignores the requestPort resource and creates a
1.293 brad 932: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 933: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 934: A buffer overflow in the cvs(1) server has been found,
935: which can be used by CVS clients to execute arbitrary code on
1.293 brad 936: the server.</a>
1.301 miod 937: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 938: Integer overflow problems were found in procfs, allowing
1.293 brad 939: reading of arbitrary kernel memory.</a>
1.301 miod 940: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 941: Pathname validation problems have been found in cvs(1),
942: allowing clients and servers access to files outside the
1.293 brad 943: repository or local CVS tree.</a>
1.279 deraadt 944: </ul>
945:
946: <p>
947: <li>
1.288 matthieu 948: <a name="34"></a>
1.261 david 949:
1.294 david 950: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.413 matthieu 951: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 952: in <a href="anoncvs.html">OpenBSD current</a>. The
953: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
954: you should update your machine.
1.261 david 955: <p>
956: <ul>
1.302 markus 957: <li><a href="errata34.html#pfkey">Dec 14, 2004:
958: On systems running isakmpd(8) it is possible for a local
959: user to cause kernel memory corruption and system panic by
1.303 markus 960: setting ipsec(4) credentials on a socket.</a>
1.298 brad 961: <li><a href="errata34.html#xpm">Sep 16, 2004:
962: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 963: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
964: httpd(8)'s mod_rewrite module can be made to write one zero byte in
965: an arbitrary memory position outside of a char array, causing a DoS
966: or possibly buffer overflows.</a>
1.294 david 967: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 968: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 969: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 970: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 971: an attacker can delete IPsec tunnels at will.</a>
1.294 david 972: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 973: Multiple remote vulnerabilities have been found in the cvs(1)
974: server which can be used by CVS clients to crash or execute
1.293 brad 975: arbitrary code on the server.</a>
1.294 david 976: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 977: kdc(8) performs inadequate checking of request fields, leading
978: to the possibility of principal impersonation from other
979: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 980: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 981: A buffer overflow in the cvs(1) server has been found,
982: which can be used by CVS clients to execute arbitrary code on
983: the server.</a>
1.294 david 984: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 985: Integer overflow problems were found in procfs, allowing
986: reading of arbitrary kernel memory.</a>
1.294 david 987: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 988: Pathname validation problems have been found in cvs(1),
989: allowing clients and servers access to files outside the
990: repository or local CVS tree.</a>
1.294 david 991: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 992: A missing check for a NULL-pointer dereference may allow a
1.281 otto 993: remote attacker to crash applications using OpenSSL.</a>
1.294 david 994: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 995: Defects in the payload validation and processing functions of
996: isakmpd have been discovered. An attacker could send malformed
997: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 998: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 999: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
1000: access module, using IP addresses without a netmask on big endian
1001: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 1002: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 1003: An IPv6 MTU handling problem exists that could be used by an
1004: attacker to cause a denial of service attack.</a>
1.294 david 1005: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 1006: A reference counting bug in shmat(2) could be used to write to
1007: kernel memory under certain circumstances.</a>
1.294 david 1008: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 1009: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1010: by Thomas Walpuski.</a>
1.294 david 1011: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 1012: It may be possible for a local user to overrun the stack in
1013: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 1014: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 1015: The use of certain ASN.1 encodings or malformed public keys may
1016: allow an attacker to mount a denial of service attack against
1017: applications linked with ssl(3).</a>
1.261 david 1018: </ul>
1019:
1020: <li>
1.288 matthieu 1021: <a name="33"></a>
1.246 deraadt 1022:
1.294 david 1023: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.413 matthieu 1024: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 1025: in <a href="anoncvs.html">OpenBSD current</a>. The
1026: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 1027: you should update your machine.
1.246 deraadt 1028: <p>
1029: <ul>
1.294 david 1030: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 1031: Pathname validation problems have been found in cvs(1),
1032: allowing clients and servers access to files outside the
1033: repository or local CVS tree.</a>
1.294 david 1034: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 1035: A missing check for a NULL-pointer dereference may allow a
1.281 otto 1036: remote attacker to crash applications using OpenSSL.</a>
1.294 david 1037: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 1038: Defects in the payload validation and processing functions of
1039: isakmpd have been discovered. An attacker could send malformed
1040: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 1041: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 1042: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
1043: access module, using IP addresses without a netmask on big endian
1044: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 1045: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 1046: An IPv6 MTU handling problem exists that could be used by an
1047: attacker to cause a denial of service attack.</a>
1.294 david 1048: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 1049: A reference counting bug in shmat(2) could be used to write to
1050: kernel memory under certain circumstances.</a>
1.294 david 1051: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 1052: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1053: by Thomas Walpuski.</a>
1.294 david 1054: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.413 matthieu 1055: It may be possible for a local user to execute arbitrary code
1056: resulting in escalation of privileges due to a stack overrun
1.264 henning 1057: in compat_ibcs2(8).</a>
1.294 david 1058: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 1059: The use of certain ASN.1 encodings or malformed public keys may
1060: allow an attacker to mount a denial of service attack against
1061: applications linked with ssl(3).</a>
1.294 david 1062: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.413 matthieu 1063: Access of freed memory in pf(4) could be used to
1.260 margarid 1064: remotely panic a machine using scrub rules.</a>
1.294 david 1065: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 1066: A buffer overflow in the address parsing in
1067: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1068: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 1069: OpenSSH versions prior to 3.7 contains a buffer management error
1070: that is potentially exploitable.</a>
1.294 david 1071: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 1072: Root may be able to reduce the security level by taking advantage of
1073: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 1074: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 1075: An improper bounds check in the kernel may allow a local user
1076: to panic the kernel.</a>
1.294 david 1077: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1078: An off-by-one error exists in the C library function realpath(3)
1079: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1080: </ul>
1081:
1.265 miod 1082:
1.247 david 1083: <p>
1.246 deraadt 1084: <li>
1.288 matthieu 1085: <a name="32"></a>
1.224 deraadt 1086:
1.294 david 1087: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.413 matthieu 1088: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 1089: in <a href="anoncvs.html">OpenBSD current</a>. The
1090: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 1091: you should update your machine.
1.224 deraadt 1092: <p>
1093: <ul>
1.294 david 1094: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1095: The use of certain ASN.1 encodings or malformed public keys may
1096: allow an attacker to mount a denial of service attack against
1097: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1098: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.413 matthieu 1099: Access of freed memory in pf(4) could be used to
1.260 margarid 1100: remotely panic a machine using scrub rules.</a>
1.294 david 1101: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1102: A buffer overflow in the address parsing in
1103: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1104: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1105: OpenSSH versions prior to 3.7 contains a buffer management error
1106: that is potentially exploitable.</a>
1.294 david 1107: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1108: Fix for a potential security issue in
1109: sendmail(8) with respect to DNS maps.</a>
1.294 david 1110: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1111: An off-by-one error exists in the C library function realpath(3)
1112: may allow an attacker to gain escalated privileges.</a>
1.294 david 1113: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1114: A buffer overflow in the address parsing in
1115: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1116: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1117: A cryptographic weaknesses in the Kerberos v4 protocol can be
1118: exploited on Kerberos v5 as well.</a>
1.294 david 1119: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1120: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1121: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1122: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1123: Various SSL and TLS operations in OpenSSL are vulnerable to
1124: timing attacks.</a>
1.294 david 1125: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1126: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1127: privileges to user daemon.</a>
1.294 david 1128: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1129: A buffer overflow in the envelope comments processing in
1130: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1131: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1132: httpd(8) leaks file inode numbers via ETag header as well as
1133: child PIDs in multipart MIME boundary generation. This could
1134: lead, for example, to NFS exploitation because it uses inode
1135: numbers as part of the file handle.</a>
1.294 david 1136: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1137: In ssl(8) an information leak can occur via timing by performing
1.413 matthieu 1138: a MAC computation even if incorrect block cipher padding has
1.234 margarid 1139: been found, this is a countermeasure. Also, check for negative
1140: sizes, in allocation routines.</a>
1.294 david 1141: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1142: A double free exists in cvs(1) that could lead to privilege
1143: escalation for cvs configurations where the cvs command is
1.233 margarid 1144: run as a privileged user.</a>
1.294 david 1145: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1146: A buffer overflow exists in named(8) that could lead to a
1147: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1148: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1149: A logic error in the pool kernel memory allocator could cause
1150: memory corruption in low-memory situations, causing the system
1151: to crash.</a>
1.294 david 1152: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1153: An attacker can bypass smrsh(8)'s restrictions and execute
1154: arbitrary commands with the privileges of his own account.</a>
1.294 david 1155: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1156: Network bridges running pf with scrubbing enabled could cause
1157: mbuf corruption, causing the system to crash.</a>
1.294 david 1158: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1159: A buffer overflow can occur in the kadmind(8) daemon, leading
1160: to possible remote crash or exploit.</a>
1.224 deraadt 1161: </ul>
1162:
1.227 miod 1163: <p>
1164: <li>
1.288 matthieu 1165: <a name="31"></a>
1.203 deraadt 1166:
1.294 david 1167: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.413 matthieu 1168: These are the OpenBSD 3.1 advisories -- all these problems are solved
1169: in <a href="anoncvs.html">OpenBSD current</a>. The
1.294 david 1170: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1171: you should update your machine.
1.203 deraadt 1172:
1173: <p>
1174: <ul>
1.294 david 1175: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1176: A buffer overflow in the address parsing in
1177: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1178: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1179: A cryptographic weaknesses in the Kerberos v4 protocol can be
1180: exploited on Kerberos v5 as well.</a>
1.294 david 1181: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1182: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1183: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1184: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1185: Various SSL and TLS operations in OpenSSL are vulnerable to
1186: timing attacks.</a>
1.294 david 1187: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1188: A buffer overflow in lprm(1) may allow an attacker to gain
1189: root privileges.</a>
1.294 david 1190: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1191: A buffer overflow in the envelope comments processing in
1192: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1193: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1194: In ssl(8) an information leak can occur via timing by performing
1.413 matthieu 1195: a MAC computation even if incorrect block cipher padding has
1.235 miod 1196: been found, this is a countermeasure. Also, check for negative
1197: sizes, in allocation routines.</a>
1.294 david 1198: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1199: A double free exists in cvs(1) that could lead to privilege
1200: escalation for cvs configurations where the cvs command is
1.392 tobias 1201: run as a privileged user.</a>
1.294 david 1202: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1203: A buffer overflow exists in named(8) that could lead to a
1204: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1205: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1206: Incorrect argument checking in the getitimer(2) system call
1207: may allow an attacker to crash the system.</a>
1.294 david 1208: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1209: An attacker can bypass smrsh(8)'s restrictions and execute
1210: arbitrary commands with the privileges of his own account.</a>
1.294 david 1211: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1212: A buffer overflow can occur in the kadmind(8) daemon, leading
1213: to possible remote crash or exploit.</a>
1.294 david 1214: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1215: Incorrect argument checking in the setitimer(2) system call
1216: may allow an attacker to write to kernel memory.</a>
1.294 david 1217: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1218: An insufficient boundary check in the select system call
1.220 miod 1219: allows an attacker to overwrite kernel memory and execute arbitrary code
1220: in kernel context.</a>
1.294 david 1221: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1222: Several remote buffer overflows can occur in the SSL2 server and SSL3
1223: client of the ssl(8) library, as in the ASN.1 parser code in the
1224: crypto(3) library, all of them being potentially remotely
1225: exploitable.</a>
1.294 david 1226: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1227: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1228: possible remote crash.</a>
1.294 david 1229: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1230: A race condition exists in the pppd(8) daemon which may cause it to
1231: alter the file permissions of an arbitrary file.</a>
1.294 david 1232: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1233: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1234: crash.</a>
1.294 david 1235: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1236: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1237: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1238: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1239: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1240: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1241: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1242: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1243: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1244: input validation error that can result in an integer overflow and
1245: privilege escalation.</a>
1.294 david 1246: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1247: A buffer overflow can occur during the interpretation of chunked
1248: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1249: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1250: Under certain conditions, on systems using YP with netgroups
1251: in the password database, it is possible that sshd(8) does
1252: ACL checks for the requested user name but uses the password
1253: database entry of a different user for authentication. This
1254: means that denied users might authenticate successfully
1255: while permitted users could be locked out.</a>
1.294 david 1256: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1257: A race condition exists that could defeat the kernel's
1258: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1259: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1260: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1261: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1262: A local user can gain super-user privileges due to a buffer
1263: overflow in sshd(8) if AFS has been configured on the system
1264: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1265: in the sshd_config file.</a>
1.203 deraadt 1266: </ul>
1267:
1.235 miod 1268: <p>
1.203 deraadt 1269: <li>
1.288 matthieu 1270: <a name="30"></a>
1.187 deraadt 1271:
1.294 david 1272: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.413 matthieu 1273: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1274: in <a href="anoncvs.html">OpenBSD current</a>. The
1275: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1276: you should update your machine.
1.187 deraadt 1277:
1278: <p>
1279: <ul>
1.294 david 1280: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1281: A buffer overflow exists in named(8) that could lead to a
1282: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1283: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1284: Incorrect argument checking in the getitimer(2) system call
1285: may allow an attacker to crash the system.</a>
1.294 david 1286: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1287: An attacker can bypass smrsh(8)'s restrictions and execute
1288: arbitrary commands with the privileges of his own account.</a>
1.294 david 1289: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1290: A buffer overflow can occur in the kadmind(8) daemon, leading
1291: to possible remote crash or exploit.</a>
1.294 david 1292: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1293: Incorrect argument checking in the setitimer(2) system call
1294: may allow an attacker to write to kernel memory.</a>
1.294 david 1295: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1296: An insufficient boundary check in the select and poll system calls
1297: allows an attacker to overwrite kernel memory and execute arbitrary code
1298: in kernel context.</a>
1.294 david 1299: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1300: Several remote buffer overflows can occur in the SSL2 server and SSL3
1301: client of the ssl(8) library, as in the ASN.1 parser code in the
1302: crypto(3) library, all of them being potentially remotely
1303: exploitable.</a>
1.294 david 1304: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1305: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1306: possible remote crash.</a>
1.294 david 1307: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1308: A race condition exists in the pppd(8) daemon which may cause it to
1309: alter the file permissions of an arbitrary file.</a>
1.294 david 1310: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1311: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1312: crash.</a>
1.294 david 1313: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1314: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1315: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1316: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1317: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1318: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1319: input validation error that can result in an integer overflow and
1320: privilege escalation.</a>
1.294 david 1321: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1322: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1323: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1324: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1325: A buffer overflow can occur during the interpretation of chunked
1326: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1327: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1328: A race condition exists that could defeat the kernel's
1329: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1330: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1331: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1332: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1333: A local user can gain super-user privileges due to a buffer
1334: overflow in sshd(8) if AFS has been configured on the system
1335: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1336: in the sshd_config file.</a>
1.294 david 1337: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1338: The mail(1) was interpreting tilde escapes even when invoked
1339: in non-interactive mode. As mail(1) is called as root from cron,
1340: this can lead to a local root compromise.</a>
1.294 david 1341: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1342: Under certain conditions, on systems using YP with netgroups in
1343: the password database, it is possible for the rexecd(8) and rshd(8)
1344: daemons to execute a shell from a password database entry for a
1345: different user. Similarly, atrun(8) may change to the wrong
1346: home directory when running jobs.</a>
1.294 david 1347: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1348: A potential double free() exists in the zlib library;
1349: this is not exploitable on OpenBSD.
1350: The kernel also contains a copy of zlib; it is not
1351: currently known if the kernel zlib is exploitable.</a>
1.294 david 1352: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1353: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1354: may allow a local user to gain super-user privileges.</a>
1.294 david 1355: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1356: A race condition between the ptrace(2) and execve(2) system calls
1357: allows an attacker to modify the memory contents of suid/sgid
1358: processes which could lead to compromise of the super-user account.</a>
1.294 david 1359: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1360: There is a security hole in sudo(8) that can be exploited
1361: when the Postfix sendmail replacement is installed that may
1362: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1363: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1364: An attacker can trick a machine running the lpd daemon into
1365: creating new files in the root directory from a machine with
1366: remote line printer access.</a>
1.294 david 1367: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1368: The vi.recover script can be abused in such a way as
1369: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1370: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1371: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1372: resulting in a crash.</a>
1.294 david 1373: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1374: A security hole that may allow an attacker to partially authenticate
1375: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1376: </ul>
1377:
1378: <p>
1379: <li>
1.288 matthieu 1380: <a name="29"></a>
1.173 deraadt 1381:
1.294 david 1382: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.413 matthieu 1383: These are the OpenBSD 2.9 advisories -- all these problems are solved
1384: in <a href="anoncvs.html">OpenBSD current</a>. The
1.294 david 1385: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1386: you should update your machine.
1387:
1.173 deraadt 1388:
1389: <p>
1390: <ul>
1.294 david 1391: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1392: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1393: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1394: A race condition exists that could defeat the kernel's
1395: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1396: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1397: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1398: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1399: A local user can gain super-user privileges due to a buffer
1400: overflow in sshd(8) if AFS has been configured on the system
1401: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1402: in the sshd_config file.</a>
1.294 david 1403: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1404: The mail(1) was interpreting tilde escapes even when invoked
1405: in non-interactive mode. As mail(1) is called as root from cron,
1406: this can lead to a local root compromise.</a>
1.294 david 1407: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1408: A potential double free() exists in the zlib library;
1409: this is not exploitable on OpenBSD.
1410: The kernel also contains a copy of zlib; it is not
1411: currently known if the kernel zlib is exploitable.</a>
1.294 david 1412: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1413: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1414: may allow a local user to gain super-user privileges.</a>
1.294 david 1415: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1416: A race condition between the ptrace(2) and execve(2) system calls
1417: allows an attacker to modify the memory contents of suid/sgid
1418: processes which could lead to compromise of the super-user account.</a>
1.294 david 1419: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1420: There is a security hole in sudo(8) that can be exploited
1421: when the Postfix sendmail replacement is installed that may
1422: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1423: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1424: An attacker can trick a machine running the lpd daemon into
1425: creating new files in the root directory from a machine with
1426: remote line printer access.</a>
1.294 david 1427: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1428: The vi.recover script can be abused in such a way as
1429: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1430: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1431: A security hole exists in uuxqt(8) that may allow an
1432: attacker to gain root privileges.</a>
1.294 david 1433: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1434: A security hole exists in lpd(8) that may allow an
1435: attacker to gain root privileges if lpd is running.</a>
1.294 david 1436: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1437: A security hole exists in sendmail(8) that may allow an
1438: attacker on the local host to gain root privileges.</a>
1.294 david 1439: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1440: A kernel buffer overflow in the NFS code can be used to execute
1441: arbitrary code by users with mount privileges (only root by
1.181 millert 1442: default).</a>
1.294 david 1443: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1444: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1445: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1446: sshd(8) allows users to delete arbitrary files named "cookies"
1447: if X11 forwarding is enabled. X11 forwarding is disabled
1448: by default.</a>
1.294 david 1449: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1450: Programs using the fts routines can be tricked into changing
1451: into the wrong directory.</a>
1.294 david 1452: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1453: Sendmail signal handlers contain unsafe code,
1454: leading to numerous race conditions.</a>
1.173 deraadt 1455: </ul>
1456:
1457: <p>
1458: <li>
1.288 matthieu 1459: <a name="28"></a>
1.152 deraadt 1460:
1.294 david 1461: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.413 matthieu 1462: These are the OpenBSD 2.8 advisories -- all these problems are solved
1463: in <a href="anoncvs.html">OpenBSD current</a>. The
1.294 david 1464: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1465: you should update your machine.
1466:
1.152 deraadt 1467:
1468: <p>
1469: <ul>
1.294 david 1470: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1471: A security hole exists in uuxqt(8) that may allow an
1472: attacker to gain root privileges.</a>
1.294 david 1473: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1474: A security hole exists in lpd(8) that may allow an
1475: attacker to gain root privileges if lpd is running.</a>
1.294 david 1476: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1477: A security hole exists in sendmail(8) that may allow an
1478: attacker on the local host to gain root privileges.</a>
1.294 david 1479: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1480: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1481: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1482: Programs using the fts routines can be tricked into changing
1483: into the wrong directory.</a>
1.294 david 1484: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1485: Sendmail signal handlers contain unsafe code,
1486: leading to numerous race conditions.</a>
1.294 david 1487: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1488: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1489: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1490: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1491: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1492: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1493: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1494: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1495: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1496: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1497: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1498: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1499: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1500: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1501: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1502: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1503: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1504: rnd(4) did not use all of its input when written to.</a>
1.294 david 1505: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1506: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1507: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1508: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1509: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1510: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1511: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1512: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1513: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1514: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1515: </ul>
1516:
1517: <p>
1518: <li>
1.288 matthieu 1519: <a name="27"></a>
1.124 deraadt 1520:
1.294 david 1521: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.413 matthieu 1522: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1523: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1524: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1525:
1526: <p>
1527: <ul>
1.294 david 1528: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1529: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1530: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1531: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1532: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1533: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1534: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1535: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1536: (patch included)</a>
1.294 david 1537: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1538: X11 libraries have 2 potential overflows in xtrans code.
1539: (patch included)</a>
1.294 david 1540: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.413 matthieu 1541: Apache mod_rewrite and mod_vhost_alias modules could expose files
1.150 beck 1542: on the server in certain configurations if used.
1543: (patch included)</a>
1.294 david 1544: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1545: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1546: TERMPATH and TERMCAP environment variables as it should.
1547: (patch included)</a>
1.294 david 1548: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1549: There are printf-style format string bugs in several privileged
1550: programs. (patch included)</a>
1.294 david 1551: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1552: libcurses honored terminal descriptions in the $HOME/.terminfo
1553: directory as well as in the TERMCAP environment variable for
1554: setuid and setgid applications.
1.146 deraadt 1555: (patch included)</a>
1.294 david 1556: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1557: A format string vulnerability exists in talkd(8).
1558: (patch included)</a>
1.294 david 1559: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1560: A format string vulnerability exists in the pw_error() function of the
1561: libutil library, yielding localhost root through chpass(1).
1562: (patch included)</a>
1.294 david 1563: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1564: Bad ESP/AH packets could cause a crash under certain conditions.
1565: (patch included)</a>
1.294 david 1566: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1567: A format string vulnerability (localhost root) exists in xlock(1).
1568: (patch included)</a>
1.294 david 1569: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1570: Various bugs found in X11 libraries have various side effects, almost
1571: completely denial of service in OpenBSD.
1572: (patch included)</a>
1.294 david 1573: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1574: Just like pretty much all the other unix ftp daemons
1575: on the planet, ftpd had a remote root hole in it.
1576: Luckily, ftpd was not enabled by default.
1.137 deraadt 1577: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1578: (patch included)</a>
1.294 david 1579: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1580: Mopd, very rarely used, contained some buffer overflows.
1581: (patch included)</a>
1.294 david 1582: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1583: libedit would check for a <b>.editrc</b> file in the current
1584: directory. Not known to be a real security issue, but a patch
1585: is available anyways.
1586: (patch included)</a>
1.294 david 1587: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1588: A serious bug in dhclient(8) could allow strings from a
1589: malicious dhcp server to be executed in the shell as root.
1590: (patch included)</a>
1.294 david 1591: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1592: A serious bug in isakmpd(8) policy handling wherein
1593: policy verification could be completely bypassed in isakmpd.
1594: (patch included)</a>
1.294 david 1595: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1596: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1597: should not be used, and results in security problems on
1598: other operating systems.</a>
1.294 david 1599: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1600: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1601: (patch included)</a>
1.294 david 1602: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1603: Improper use of ipf <i>keep-state</i> rules can result
1604: in firewall rules being bypassed. (patch included)</a>
1.413 matthieu 1605:
1.124 deraadt 1606: </ul>
1607:
1608: <p>
1609: <li>
1.288 matthieu 1610: <a name="26"></a>
1.119 deraadt 1611:
1.294 david 1612: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.413 matthieu 1613: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1614: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1615: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1616:
1617: <p>
1618: <ul>
1.294 david 1619: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1620: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1621: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1622: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1623: Improper use of ipf <i>keep-state</i> rules can result
1624: in firewall rules being bypassed. (patch included)</a>
1.413 matthieu 1625: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1626: xlockmore has a bug which a localhost attacker can use to gain
1627: access to the encrypted root password hash (which is normally
1.245 miod 1628: encoded using blowfish</a> (see
1.294 david 1629: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1630: crypt(3)</a>)
1.245 miod 1631: (patch included).
1.413 matthieu 1632: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1633: Systems running with procfs enabled and mounted are
1634: vulnerable to a very tricky exploit. procfs is not
1635: mounted by default.
1636: (patch included).</a>
1.294 david 1637: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1638: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1639: thus exposing the system to a race where the aliases file
1640: did not exist.
1.119 deraadt 1641: (patch included).</a>
1.294 david 1642: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1643: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1644: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1645: A buffer overflow in the RSAREF code included in the
1646: USA version of libssl, is possibly exploitable in
1647: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1648: (patch included).<br></a>
1649: <strong>Update:</strong> Turns out that this was not exploitable
1650: in any of the software included in OpenBSD 2.6.
1.413 matthieu 1651: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1652: Any user could change interface media configurations, resulting in
1653: a localhost denial of service attack.
1.121 deraadt 1654: (patch included).</a>
1.119 deraadt 1655: </ul>
1656:
1657: <p>
1658: <li>
1.288 matthieu 1659: <a name="25"></a>
1.106 deraadt 1660:
1.294 david 1661: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.413 matthieu 1662: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1663: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1664: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1665:
1.96 deraadt 1666: <p>
1.104 deraadt 1667: <ul>
1.413 matthieu 1668: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1669: In cron(8), make sure argv[] is NULL terminated in the
1670: fake popen() and run sendmail as the user, not as root.
1671: (patch included).</a>
1.294 david 1672: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1673: filesystems had an overrun in their handling of uio_offset
1674: in their readdir() routines. (These filesystems are not
1675: enabled by default). (patch included).</a>
1.294 david 1676: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1677: when we execve() a new process. (patch included).</a>
1.294 david 1678: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1679: been handled by IPsec may be transmitted as cleartext.
1680: PF_KEY SA expirations may leak kernel resources.
1681: (patch included).</a>
1.294 david 1682: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1683: motd re-writing and change the find(1) to use -execdir
1684: (patch included).</a>
1.294 david 1685: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1686: users to chflags(2) or fchflags(2) on character or block devices
1687: which they may currently be the owner of (patch included).</a>
1.294 david 1688: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1689: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1690: </ul>
1691:
1.106 deraadt 1692: <p>
1693: <li>
1.288 matthieu 1694: <a name="24"></a>
1.235 miod 1695:
1.294 david 1696: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.413 matthieu 1697: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1698: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1699: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1700:
1.96 deraadt 1701: <p>
1.75 deraadt 1702: <ul>
1.294 david 1703: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1704: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1705: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1706: another kernel crash case caused by the <strong>crashme</strong>
1707: program (patch included).</a>
1.294 david 1708: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1709: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1710: (patch included).</a>
1.294 david 1711: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1712: existed in ping(8). (patch included).</a>
1.294 david 1713: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.413 matthieu 1714: the ipq, which could permit an attacker to cause a crash.
1.87 deraadt 1715: (patch included).</a>
1.294 david 1716: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1717: kernel between accept(2) and select(2) could permit an attacker
1718: to hang sockets from remote.
1719: (patch included).</a>
1.294 david 1720: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1721: bog the machine excessively and cause problems.
1722: (patch included).</a>
1.294 david 1723: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1724: DDB interacted to possibly cause a crash.
1725: (patch included).</a>
1.294 david 1726: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1727: (patch included).</a>
1.294 david 1728: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1729: problem in bootpd(8). (patch included).</a>
1.294 david 1730: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1731: exploitable problem relating to environment variables in termcap
1732: and curses. (patch included).</a>
1.294 david 1733: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1734: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1735: </ul>
1736:
1.106 deraadt 1737: <p>
1738: <li>
1.288 matthieu 1739: <a name="23"></a>
1.235 miod 1740:
1.294 david 1741: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.413 matthieu 1742: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1743: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1744: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1745:
1.96 deraadt 1746: <p>
1.53 matthieu 1747: <ul>
1.294 david 1748: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1749: problem in bootpd(8). (patch included).</a>
1.294 david 1750: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1751: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1752: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1753: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1754: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1755: chpass(1) has a file descriptor leak which allows an
1756: attacker to modify /etc/master.passwd.</a>
1.294 david 1757: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1758: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1759: should not be executed with fd slots 0, 1, or 2 free.
1760: (patch included).</a>
1.294 david 1761: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1762: libraries (patches included).</a>
1.294 david 1763: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1764: processes too permissive (4th revision patch included).</a>
1.294 david 1765: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1766: of immutable and append-only file flags. (patch included).</a>
1.294 david 1767: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1768: if IPSEC is enabled (patch included).</a>
1.294 david 1769: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1770: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1771: </ul>
1.9 deraadt 1772:
1.106 deraadt 1773: <p>
1774: <li>
1.288 matthieu 1775: <a name="22"></a>
1.235 miod 1776:
1.294 david 1777: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1778: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1779: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1780: still exist in other operating systems. (The supplied patches are for
1781: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1782:
1.96 deraadt 1783: <p>
1.9 deraadt 1784: <ul>
1.294 david 1785: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1786: packets if IPSEC is enabled (patch included).</a>
1.294 david 1787: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1788: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1789: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1790: (patch included).</a>
1.294 david 1791: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1792: (patch included).</a>
1.294 david 1793: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1794: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1795: (patch included).</a>
1.294 david 1796: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1797: export (patch included).</a>
1.112 philen 1798: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1799: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1800: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1801: Acceptance.</a>
1.294 david 1802: A patch is available <a href="errata22.html#sourceroute">here</a>.
1803: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1804: flaw (patch included).</a>
1.294 david 1805: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1806: </ul>
1807:
1.106 deraadt 1808: <p>
1809: <li>
1.288 matthieu 1810: <a name="21"></a>
1.235 miod 1811:
1.294 david 1812: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1813: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1814: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1815: exist in other operating systems. (If you are running OpenBSD 2.1, we
1816: would strongly recommend an upgrade to the newest release, as this
1817: patch list only attempts at fixing the most important security
1818: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1819: security problems. Many of those problems were solved in ways which
1820: make it hard for us to provide patches).
1821:
1.96 deraadt 1822: <p>
1.52 deraadt 1823: <ul>
1.112 philen 1824: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1825: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1826: (patch included)</a>
1.112 philen 1827: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1828: </ul>
1.51 deraadt 1829:
1.106 deraadt 1830: <p>
1831: <li>
1.288 matthieu 1832: <a name="20"></a>
1.235 miod 1833:
1.294 david 1834: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1835: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1836: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1837: exist in other operating systems. (If you are running OpenBSD 2.0, we
1838: commend you for being there back in the old days!, but you're really
1839: missing out if you don't install a new version!)
1840:
1841: <p>
1842: <ul>
1.112 philen 1843: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.413 matthieu 1844: resolver (patch included)</a>
1.99 deraadt 1845: <li>Many others... if people can hunt them down, please let me know
1846: and we'll put them up here.
1847: </ul>
1.51 deraadt 1848: <p>
1.106 deraadt 1849:
1.288 matthieu 1850: <a name="watching"></a>
1.294 david 1851: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1852:
1.21 deraadt 1853: Since we take a proactive stance with security, we are continually
1854: finding and fixing new security problems. Not all of these problems
1.80 espie 1855: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1856: confirmed to be exploitable; many simple bugs we fix do turn out to
1857: have security consequences we could not predict. We do not have the
1858: time resources to make these changes available in the above format.<p>
1.21 deraadt 1859:
1860: Thus there are usually minor security fixes in the current source code
1861: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1862: guarantee that these problems are of minimal impact and unproven
1.44 ian 1863: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1864: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1865:
1.45 deraadt 1866: People who are really concerned with security can do a number of
1867: things:<p>
1.21 deraadt 1868:
1869: <ul>
1870: <li>If you understand security issues, watch our
1.294 david 1871: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1872: eye out for things which appear security related. Since
1.21 deraadt 1873: exploitability is not proven for many of the fixes we make,
1874: do not expect the relevant commit message to say "SECURITY FIX!".
1875: If a problem is proven and serious, a patch will be available
1876: here very shortly after.
1.161 horacio 1877: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1878: security-announce mailing list</a> which will notify you for every
1.186 ian 1879: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1880: and instruct you on how to patch the problem.
1.21 deraadt 1881: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1882: complete system build from time to time (read /usr/src/Makefile
1883: carefully). Users can make the assumption that the current
1884: source tree always has stronger security than the previous release.
1.45 deraadt 1885: However, building your own system from source code is not trivial;
1.397 deraadt 1886: it is nearly 850MB of source code, and problems do occur as we
1.45 deraadt 1887: transition between major releases.
1.115 ericj 1888: <li>Install a binary snapshot for your
1.80 espie 1889: architecture, which are made available fairly often. For
1.413 matthieu 1890: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1891: </ul>
1892:
1.9 deraadt 1893: <p>
1.288 matthieu 1894: <a name="reporting"></a>
1.294 david 1895: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1896:
1.5 deraadt 1897: <p> If you find a new security problem, you can mail it to
1.294 david 1898: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1899: <br>
1.5 deraadt 1900: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1901: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1902:
1.107 deraadt 1903: <p>
1.288 matthieu 1904: <a name="papers"></a>
1.294 david 1905: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1906:
1.389 lum 1907: Numerous
1.404 deraadt 1908: <a href="papers/index.html">papers</a> have been written by OpenBSD team members,
1.389 lum 1909: many dedicated to security.
1.294 david 1910: </ul>
1.1 deraadt 1911:
1.24 deraadt 1912: </body>
1913: </html>
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