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