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