Annotation of www/security.html, Revision 1.394
1.294 david 1: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
2: "http://www.w3.org/TR/html4/loose.dtd">
1.1 deraadt 3: <html>
4: <head>
1.20 deraadt 5: <title>OpenBSD Security</title>
1.294 david 6: <link rev=made href="mailto:www@openbsd.org">
1.345 tom 7: <link rel="alternate" type="application/rss+xml" title="OpenBSD errata (external)" href="http://www.undeadly.org/cgi?action=errata">
1.294 david 8: <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
1.1 deraadt 9: <meta name="resource-type" content="document">
10: <meta name="description" content="OpenBSD advisories">
11: <meta name="keywords" content="openbsd,main">
12: <meta name="distribution" content="global">
1.394 ! lum 13: <meta name="copyright" content="This document copyright 1997-2013 by OpenBSD.">
1.1 deraadt 14: </head>
15:
1.274 david 16: <body bgcolor="#ffffff" text="#000000" link="#23238E">
1.210 jsyn 17: <a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
1.106 deraadt 18: <p>
1.294 david 19: <h2><font color="#e00000">Security</font></h2>
20: <hr>
1.1 deraadt 21:
1.114 philen 22: <table width="100%">
23: <tr>
24: <td colspan="2">
25: <strong>Index</strong>
26: </td>
27: </tr>
28: <tr>
29: <td valign="top">
1.294 david 30: <a href="#goals">Security goals of the Project</a>.<br>
31: <a href="#disclosure">Full Disclosure policy</a>.<br>
32: <a href="#process">Source code auditing process</a>.<br>
33: <a href="#default">"Secure by Default"</a>.<br>
34: <a href="#crypto">Use of Cryptography</a>.<br>
35: <p>
36: <a href="#watching">Watching changes</a>.<br>
37: <a href="#reporting">Reporting security issues</a>.<br>
38: <a href="#papers">Further Reading</a><br>
1.106 deraadt 39: <p>
1.114 philen 40: </td>
41: <td valign="top">
1.225 deraadt 42: For security advisories for specific releases, click below:<br>
43: <a href="#20">2.0</a>,
44: <a href="#21">2.1</a>,
45: <a href="#22">2.2</a>,
46: <a href="#23">2.3</a>,
47: <a href="#24">2.4</a>,
48: <a href="#25">2.5</a>,
49: <a href="#26">2.6</a>,
50: <a href="#27">2.7</a>,
51: <a href="#28">2.8</a>,
52: <a href="#29">2.9</a>,
53: <a href="#30">3.0</a>,
54: <a href="#31">3.1</a>,
1.246 deraadt 55: <a href="#32">3.2</a>,
1.261 david 56: <a href="#33">3.3</a>,
1.387 miod 57: <a href="#34">3.4</a>,
1.388 miod 58: <a href="#35">3.5</a>,
1.365 deraadt 59: <br>
1.312 david 60: <a href="#36">3.6</a>,
1.318 deraadt 61: <a href="#37">3.7</a>,
1.321 brad 62: <a href="#38">3.8</a>,
1.334 brad 63: <a href="#39">3.9</a>,
1.348 merdely 64: <a href="#40">4.0</a>,
65: <a href="#41">4.1</a>,
1.357 brad 66: <a href="#42">4.2</a>,
1.365 deraadt 67: <a href="#43">4.3</a>,
1.377 tobias 68: <a href="#44">4.4</a>,
1.378 jasper 69: <a href="#45">4.5</a>,
1.385 jasper 70: <a href="#46">4.6</a>,
1.387 miod 71: <a href="#47">4.7</a>,
72: <a href="#48">4.8</a>,
1.390 sthen 73: <a href="#49">4.9</a>,
74: <a href="#50">5.0</a>,
1.394 ! lum 75: <a href="#51">5.1</a>,
! 76: <br>
! 77: <a href="#52">5.2</a>.
1.114 philen 78: </td>
79: </tr>
80: </table>
1.56 deraadt 81: <hr>
82:
1.294 david 83: <a name="goals"></a>
1.278 deraadt 84: <ul>
1.294 david 85: <li><h3><font color="#e00000">Goal</font></h3><p>
1.22 deraadt 86:
1.14 deraadt 87: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 88: ONE in the industry for security (if we are not already there). Our
89: open software development model permits us to take a more
90: uncompromising view towards increased security than Sun, SGI, IBM, HP,
91: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 92: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 93: cryptography</a>, we are able to take cryptographic approaches towards
94: fixing security problems.<p>
1.18 deraadt 95:
1.288 matthieu 96: <a name="disclosure"></a>
1.294 david 97: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 98:
1.45 deraadt 99: Like many readers of the
1.196 jufi 100: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 101: BUGTRAQ mailing list</a>,
1.106 deraadt 102: we believe in full disclosure of security problems. In the
103: operating system arena, we were probably the first to embrace
104: the concept. Many vendors, even of free software, still try
105: to hide issues from their users.<p>
106:
107: Security information moves very fast in cracker circles. On the other
108: hand, our experience is that coding and releasing of proper security
109: fixes typically requires about an hour of work -- very fast fix
110: turnaround is possible. Thus we think that full disclosure helps the
111: people who really care about security.<p>
112:
1.288 matthieu 113: <a name="process"></a>
1.294 david 114: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 115:
1.12 deraadt 116: Our security auditing team typically has between six and twelve
1.45 deraadt 117: members who continue to search for and fix new security holes. We
118: have been auditing since the summer of 1996. The process we follow to
119: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 120: every critical software component. We are not so much looking for
121: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 122: years later someone discovers the problem used to be a security
1.106 deraadt 123: issue, and we fixed it because it was just a bug, well, all the
124: better. Flaws have been found in just about every area of the system.
125: Entire new classes of security problems have been found during our
126: audit, and often source code which had been audited earlier needs
127: re-auditing with these new flaws in mind. Code often gets audited
128: multiple times, and by multiple people with different auditing
129: skills.<p>
1.12 deraadt 130:
1.94 deraadt 131: Some members of our security auditing team worked for Secure Networks,
132: the company that made the industry's premier network security scanning
133: software package Ballista (Secure Networks got purchased by Network
134: Associates, Ballista got renamed to Cybercop Scanner, and well...)
135: That company did a lot of security research, and thus fit in well
1.106 deraadt 136: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
137: colours since day 1.<p>
1.31 deraadt 138:
1.34 deraadt 139: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 140: In most cases we have found that the determination of exploitability
141: is not an issue. During our ongoing auditing process we find many
142: bugs, and endeavor to fix them even though exploitability is not
143: proven. We fix the bug, and we move on to find other bugs to fix. We
144: have fixed many simple and obvious careless programming errors in code
145: and only months later discovered that the problems were in fact
146: exploitable. (Or, more likely someone on
1.197 jufi 147: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 148: would report that other operating systems were vulnerable to a `newly
149: discovered problem', and then it would be discovered that OpenBSD had
150: been fixed in a previous release). In other cases we have been saved
151: from full exploitability of complex step-by-step attacks because we
152: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 153: managed such a success is the lpd advisory that Secure Networks put out.
154: <p>
1.29 deraadt 155:
1.288 matthieu 156: <a name="newtech"></a>
1.294 david 157: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 158:
159: As we audit source code, we often invent new ways of solving problems.
160: Sometimes these ideas have been used before in some random application
161: written somewhere, but perhaps not taken to the degree that we do.
162: <p>
163:
164: <ul>
165: <li>strlcpy() and strlcat()
166: <li>Memory protection purify
167: <ul>
168: <li>W^X
169: <li>.rodata segment
170: <li>Guard pages
171: <li>Randomized malloc()
172: <li>Randomized mmap()
173: <li>atexit() and stdio protection
174: </ul>
1.295 otto 175: <li>Privilege separation
1.278 deraadt 176: <li>Privilege revocation
177: <li>Chroot jailing
178: <li>New uids
179: <li>ProPolice
180: <li>... and others
181: </ul>
182: <p>
183:
1.294 david 184: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 185:
1.45 deraadt 186: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 187: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 188: commonplace in security forums like
1.197 jufi 189: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 190:
1.45 deraadt 191: The most intense part of our security auditing happened immediately
1.80 espie 192: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 193: over the last third of 1996 and first half of 1997. Thousands (yes,
194: thousands) of security issues were fixed rapidly over this year-long
195: period; bugs like the standard buffer overflows, protocol
196: implementation weaknesses, information gathering, and filesystem
197: races. Hence most of the security problems that we encountered were
198: fixed before our 2.1 release, and then a far smaller number needed
199: fixing for our 2.2 release. We do not find as many problems anymore,
200: it is simply a case of diminishing returns. Recently the security
201: problems we find and fix tend to be significantly more obscure or
202: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 203:
1.35 deraadt 204: <ul>
1.45 deraadt 205: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 206: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 207: to search for more complicated exploits, so we will too.
208: <li>Finding and fixing subtle flaws in complicated software is
209: a lot of fun.
1.35 deraadt 210: </ul>
1.106 deraadt 211: <p>
1.15 deraadt 212:
1.14 deraadt 213: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 214: to find and fix new security flaws.<p>
1.12 deraadt 215:
1.288 matthieu 216: <a name="default"></a>
1.294 david 217: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 218:
219: To ensure that novice users of OpenBSD do not need to become security
220: experts overnight (a viewpoint which other vendors seem to have), we
221: ship the operating system in a Secure by Default mode. All non-essential
222: services are disabled. As the user/administrator becomes more familiar
223: with the system, he will discover that he has to enable daemons and other
224: parts of the system. During the process of learning how to enable a new
225: service, the novice is more likely to learn of security considerations.<p>
226:
227: This is in stark contrast to the increasing number of systems that
228: ship with NFS, mountd, web servers, and various other services enabled
229: by default, creating instantaneous security problems for their users
230: within minutes after their first install.<p>
231:
1.288 matthieu 232: <a name="crypto"></a>
1.294 david 233: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 234:
235: And of course, since the OpenBSD project is based in Canada, it is possible
236: for us to integrate cryptography. For more information, read the page
1.116 deraadt 237: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 238:
1.294 david 239: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 240:
241: <li>
1.393 sthen 242: <a name="52"></a>
243:
244: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
245: These are the OpenBSD 5.2 advisories -- all these problems are solved
246: in <a href=anoncvs.html>OpenBSD current</a> and the
247: <a href=stable.html>patch branch</a>.
248:
249: <p>
250: <ul>
251: None yet!
252: </ul>
253:
254: <li>
1.390 sthen 255: <a name="51"></a>
256:
257: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
258: These are the OpenBSD 5.1 advisories -- all these problems are solved
259: in <a href=anoncvs.html>OpenBSD current</a> and the
260: <a href=stable.html>patch branch</a>.
261:
262: <p>
263: <ul>
1.393 sthen 264: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
265: A heap overflow vulnerability has been found in libcrypto's ASN.1
266: parsing code (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 267: </ul>
268:
1.393 sthen 269: <p>
270: OpenBSD 5.0 and earlier releases are not supported anymore. The following
271: paragraphs only list advisories issued while they were maintained; these
272: releases are likely to be affected by the advisories for more recent releases.
273: <br>
274:
1.390 sthen 275: <li>
1.388 miod 276: <a name="50"></a>
277:
278: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
279: These are the OpenBSD 5.0 advisories -- all these problems are solved
280: in <a href=anoncvs.html>OpenBSD current</a> and the
281: <a href=stable.html>patch branch</a>.
282:
283: <p>
284: <ul>
1.393 sthen 285: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
286: A heap overflow vulnerability has been found in libcrypto's ASN.1
287: parsing code (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 288: </ul>
289:
290: <li>
1.387 miod 291: <a name="49"></a>
292:
293: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
294: These are the OpenBSD 4.9 advisories -- all these problems are solved
295: in <a href=anoncvs.html>OpenBSD current</a> and the
296: <a href=stable.html>patch branch</a>.
297:
298: <p>
299: <ul>
300: None yet!
301: </ul>
302:
303: <li>
304: <a name="48"></a>
305:
306: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
307: These are the OpenBSD 4.8 advisories -- all these problems are solved
308: in <a href=anoncvs.html>OpenBSD current</a> and the
309: <a href=stable.html>patch branch</a>.
310:
311: <p>
312: <ul>
313: <li><a href="errata48.html#009_pf">February 16, 2011:
314: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
315: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
316: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
317: prefixes "10.1.1.1/30") are not affected.</a>
318: <li><a href="errata48.html#008_openssl">February 11, 2011:
319: An incorrectly formatted ClientHello handshake message could cause
320: OpenSSL to parse past the end of the message. An attacker could use
321: this flaw to trigger an invalid memory access, causing a crash of an
322: application linked to OpenSSL. As well, certain applications may expose
323: the contents of parsed OCSP extensions, specifically the OCSP nonce
324: extension.
325: <br>
326: Applications are only affected if they act as a server and call
327: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
328: that nothing in the base OS uses this. Apache httpd started using this
329: in v2.3.3; this is newer than the version in ports.</a>
330: <li><a href="errata48.html#005_pf">December 17, 2010:
331: Insufficent initialization of the pf rule structure in the ioctl
332: handler may allow userland to modify kernel memory. By default root
333: privileges are needed to add or modify pf rules.</a>
334: </ul>
335:
336: <li>
1.385 jasper 337: <a name="47"></a>
338:
339: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
340: These are the OpenBSD 4.7 advisories -- all these problems are solved
341: in <a href=anoncvs.html>OpenBSD current</a> and the
342: <a href=stable.html>patch branch</a>.
343:
344: <p>
345: <ul>
1.387 miod 346: <li><a href="errata47.html#013_pf">February 16, 2011:
347: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
348: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
349: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
350: prefixes "10.1.1.1/30") are not affected.</a>
351: <li><a href="errata47.html#012_openssl">February 11, 2011:
352: An incorrectly formatted ClientHello handshake message could cause
353: OpenSSL to parse past the end of the message. An attacker could use
354: this flaw to trigger an invalid memory access, causing a crash of an
355: application linked to OpenSSL. As well, certain applications may expose
356: the contents of parsed OCSP extensions, specifically the OCSP nonce
357: extension.
358: <br>
359: Applications are only affected if they act as a server and call
360: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
361: that nothing in the base OS uses this. Apache httpd started using this
362: in v2.3.3; this is newer than the version in ports.</a>
363: <li><a href="errata47.html#009_pf">December 17, 2010:
364: Insufficent initialization of the pf rule structure in the ioctl
365: handler may allow userland to modify kernel memory. By default root
366: privileges are needed to add or modify pf rules.</a>
367: <li><a href="errata47.html#004_pfsync">April 23, 2010:
368: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 369: <li><a href="errata47.html#003_openssl">April 14, 2010:
370: In TLS connections, certain incorrectly formatted records can
371: cause an OpenSSL client or server to crash due to a read
1.392 tobias 372: attempt at NULL.</a>
1.385 jasper 373: </ul>
374:
375: <li>
1.378 jasper 376: <a name="46"></a>
377:
378: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
379: These are the OpenBSD 4.6 advisories -- all these problems are solved
380: in <a href=anoncvs.html>OpenBSD current</a> and the
381: <a href=stable.html>patch branch</a>.
382:
383: <p>
384: <ul>
1.385 jasper 385: <li><a href="errata46.html#010_openssl">April 14, 2010:
386: In TLS connections, certain incorrectly formatted records can
387: cause an OpenSSL client or server to crash due to a read
1.392 tobias 388: attempt at NULL.</a>
1.384 jasper 389: <li><a href="errata46.html#006_openssl">March 12, 2010:
390: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 391: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 392: <li><a href="errata46.html#004_openssl">November 26, 2009:
393: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 394: related to renegotiation.</a>
1.378 jasper 395: </ul>
1.382 tobias 396:
397: <li>
1.373 djm 398: <a name="45"></a>
399:
400: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
401: These are the OpenBSD 4.5 advisories -- all these problems are solved
402: in <a href=anoncvs.html>OpenBSD current</a> and the
403: <a href=stable.html>patch branch</a>.
404:
405: <p>
406: <ul>
1.385 jasper 407: <li><a href="errata45.html#016_openssl">April 14, 2010:
408: In TLS connections, certain incorrectly formatted records can
409: cause an OpenSSL client or server to crash due to a read
1.392 tobias 410: attempt at NULL.</a>
1.385 jasper 411: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 412: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 413: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 414: <li><a href="errata45.html#010_openssl">November 26, 2009:
415: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 416: related to renegotiation.</a>
1.373 djm 417: </ul>
418:
419: <li>
1.365 deraadt 420: <a name="44"></a>
421:
422: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
423: These are the OpenBSD 4.4 advisories -- all these problems are solved
424: in <a href=anoncvs.html>OpenBSD current</a> and the
425: <a href=stable.html>patch branch</a>.
426:
427: <p>
428: <ul>
1.372 millert 429: <li><a href="errata44.html#011_sudo">February 22, 2009:
430: sudo(8) may allow a user listed in sudoers to run a command
431: as a different user than their access rule specifies when a Unix
432: group is used in the RunAs portion of the rule.</a>
1.370 djm 433: <li><a href="errata44.html#008_bind">January 15, 2009:
434: named(8) suffered from a similar logic error that may allow
435: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 436: <li><a href="errata44.html#007_openssl">January 9, 2009:
437: OpenSSL suffered from some logic errors that allowed bypass
438: of DSA/ECDSA certificate validation.</a>
1.367 brad 439: <li><a href="errata44.html#001_ndp">November 2, 2008:
440: The Neighbor Discovery Protocol (ndp) did not correctly verify
441: neighbor solicitation requests maybe allowing a nearby attacker
442: to intercept traffic.</a>
1.365 deraadt 443: </ul>
444:
445: <li>
1.357 brad 446: <a name="43"></a>
447:
448: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
449: These are the OpenBSD 4.3 advisories -- all these problems are solved
450: in <a href=anoncvs.html>OpenBSD current</a> and the
451: <a href=stable.html>patch branch</a>.
452:
453: <p>
454: <ul>
1.372 millert 455: <li><a href="errata43.html#011_sudo">February 22, 2009:
456: sudo(8) may allow a user listed in sudoers to run a command
457: as a different user than their access rule specifies when a Unix
458: group is used in the RunAs portion of the rule.</a>
1.370 djm 459: <li><a href="errata43.html#008_bind">January 15, 2009:
460: named(8) suffered from a similar logic error that may allow
461: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 462: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 463: OpenSSL suffered from some logic errors that allowed bypass
464: of DSA/ECDSA certificate validation.</a>
1.382 tobias 465: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 466: The Neighbor Discovery Protocol (ndp) did not correctly verify
467: neighbor solicitation requests maybe allowing a nearby attacker
468: to intercept traffic.</a>
1.362 brad 469: <li><a href="errata43.html#004_bind">July 23, 2008:
470: A vulnerability has been found with BIND.</a>
1.361 brad 471: <li><a href="errata43.html#003_xorg">July 15, 2008:
472: Multiple vulnerabilities in X.Org.</a>
1.359 brad 473: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 474: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 475: <li><a href="errata43.html#001_openssh">March 30, 2008:
476: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 477: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 478: </ul>
479:
480: <li>
1.348 merdely 481: <a name="42"></a>
482: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
483: These are the OpenBSD 4.2 advisories -- all these problems are solved
484: in <a href=anoncvs.html>OpenBSD current</a> and the
485: <a href=stable.html>patch branch</a>.
486:
487: <p>
488: <ul>
1.364 tobias 489: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 490: The Neighbor Discovery Protocol (ndp) did not correctly verify
491: neighbor solicitation requests maybe allowing a nearby attacker
492: to intercept traffic.</a>
1.362 brad 493: <li><a href="errata42.html#013_bind">July 23, 2008:
494: A vulnerability has been found with BIND.</a>
1.361 brad 495: <li><a href="errata42.html#012_xorg2">July 15, 2008:
496: Multiple vulnerabilities in X.Org.</a>
1.359 brad 497: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 498: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 499: <li><a href="errata42.html#010_openssh">March 30, 2008:
500: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 501: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 502: <li><a href="errata42.html#009_ppp">March 7, 2008:
503: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 504: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
505: Multiple vulnerabilities in X.Org.</a>
1.351 okan 506: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
507: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 508: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 509: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 510: </ul>
511:
512: <li>
1.346 matthieu 513: <a name="41"></a>
514:
515: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
516: These are the OpenBSD 4.1 advisories -- all these problems are solved
517: in <a href=anoncvs.html>OpenBSD current</a> and the
518: <a href=stable.html>patch branch</a>.
519:
520: <p>
521: <ul>
1.359 brad 522: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 523: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 524: <li><a href="errata41.html#015_openssh">March 30, 2008:
525: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 526: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 527: <li><a href="errata41.html#014_ppp">March 7, 2008:
528: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 529: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
530: Multiple vulnerabilities in X.Org.</a>
531: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
532: The SSL_get_shared_ciphers() function in OpenSSL contains
533: an off-by-one overflow.</a>
1.350 deraadt 534: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 535: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 536: <li><a href="errata41.html#009_file">Jul 9, 2007:
537: Fix possible heap overflow in file(1).</a>
1.346 matthieu 538: <li><a href="errata41.html#005_route6">Apr 27, 2007:
539: IPv6 type 0 route headers can be used to mount a DoS attack
540: against hosts and networks.</a>
541: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
542: Multiple vulnerabilities in X.Org.</a>
543: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
544: Incorrect mbuf handling for ICMP6 packets.</a>
545: </ul>
546:
547: <li>
1.334 brad 548: <a name="40"></a>
549: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
550: These are the OpenBSD 4.0 advisories -- all these problems are solved
551: in <a href=anoncvs.html>OpenBSD current</a> and the
552: <a href=stable.html>patch branch</a>.
553:
554: <p>
555: <ul>
1.382 tobias 556: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
557: The SSL_get_shared_ciphers() function in OpenSSL contains an
558: off-by-one overflow.</a>
1.350 deraadt 559: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 560: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 561: <li><a href="errata40.html#015_file">Jul 9, 2007:
562: Fix possible heap overflow in file(1).</a>
1.343 deraadt 563: <li><a href="errata40.html#012_route6">Apr 23, 2007:
564: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 565: against hosts and networks.</a>
1.342 mbalmer 566: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
567: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 568: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
569: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 570: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 571: Insufficient validation in vga(4) may allow an attacker to gain
572: root privileges on some i386 systems.</a>
1.339 deraadt 573: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 574: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 575: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 576: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
577: found by Chris Evans.</a>
1.339 deraadt 578: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 579: Several problems have been found in OpenSSL.</a>
1.339 deraadt 580: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 581: httpd(8) does not sanitize the Expect header from an HTTP request
582: when it is reflected back in an error message, which might allow
583: cross-site scripting (XSS) style attacks.</a>
584: </ul>
585:
586: <li>
1.321 brad 587: <a name="39"></a>
588:
589: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
590: These are the OpenBSD 3.9 advisories -- all these problems are solved
591: in <a href=anoncvs.html>OpenBSD current</a> and the
592: <a href=stable.html>patch branch</a>.
593:
594: <p>
595: <ul>
1.343 deraadt 596: <li><a href="errata39.html#022_route6">Apr 23, 2007:
597: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 598: against hosts and networks.</a>
1.342 mbalmer 599: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
600: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 601: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
602: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 603: <li><a href="errata39.html#agp">Jan 3, 2007:
604: Insufficient validation in vga(4) may allow an attacker to gain
605: root privileges on some i386 systems.</a>
1.336 brad 606: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 607: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 608: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 609: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 610: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 611: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 612: found by Chris Evans.</a>
1.333 deraadt 613: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 614: Several problems have been found in OpenSSL.</a>
1.333 deraadt 615: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 616: httpd(8) does not sanitize the Expect header from an HTTP request
617: when it is reflected back in an error message, which might allow
618: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 619: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 620: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
621: possible for an attacker to construct an invalid signature which
622: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 623: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 624: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 625: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 626: Due to the failure to correctly validate LCP configuration option
627: lengths, it is possible for an attacker to send LCP packets via an
628: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 629: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 630: A problem in isakmpd(8) caused IPsec to run partly without replay
631: protection.</a>
1.333 deraadt 632: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 633: It is possible to cause the kernel to panic when more than the default
634: number of sempahores have been allocated.</a>
1.333 deraadt 635: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 636: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
637: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
638: option.</a>
1.333 deraadt 639: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 640: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 641: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 642: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
643: overflow.</a>
1.333 deraadt 644: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 645: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 646: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 647: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 648: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 649: A race condition has been reported to exist in the handling by sendmail
650: of asynchronous signals.</a>
651: </ul>
652:
653: <li>
1.318 deraadt 654: <a name="38"></a>
655:
656: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
657: These are the OpenBSD 3.8 advisories -- all these problems are solved
658: in <a href=anoncvs.html>OpenBSD current</a> and the
659: <a href=stable.html>patch branch</a>.
660:
661: <p>
662: <ul>
1.332 brad 663: <li><a href="errata38.html#ssh2">Oct 12, 2006:
664: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 665: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 666: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 667: found by Chris Evans.</a>
668: <li><a href="errata38.html#openssl2">Oct 7, 2006:
669: Several problems have been found in OpenSSL.</a>
670: <li><a href="errata38.html#httpd2">Oct 7, 2006:
671: httpd(8) does not sanitize the Expect header from an HTTP request
672: when it is reflected back in an error message, which might allow
673: cross-site scripting (XSS) style attacks.</a>
1.329 brad 674: <li><a href="errata38.html#openssl">Sep 8, 2006:
675: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
676: possible for an attacker to construct an invalid signature which
677: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 678: <li><a href="errata38.html#bind">Sep 8, 2006:
679: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 680: <li><a href="errata38.html#sppp">Sep 2, 2006:
681: Due to the failure to correctly validate LCP configuration option
682: lengths, it is possible for an attacker to send LCP packets via an
683: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 684: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
685: A problem in isakmpd(8) caused IPsec to run partly without replay
686: protection.</a>
687: <li><a href="errata38.html#sem">Aug 25, 2006:
688: It is possible to cause the kernel to panic when more than the default
689: number of sempahores have been allocated.</a>
690: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
691: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
692: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
693: option.</a>
694: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
695: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 696: <li><a href="errata38.html#httpd">Jul 30, 2006:
697: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
698: overflow.</a>
1.324 brad 699: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
700: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 701: <li><a href="errata38.html#xorg">May 2, 2006:
702: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 703: <li><a href="errata38.html#sendmail">Mar 25, 2006:
704: A race condition has been reported to exist in the handling by sendmail
705: of asynchronous signals.</a>
706: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 707: Josh Bressers has reported a weakness in OpenSSH caused due to the
708: insecure use of the system(3) function in scp(1) when performing copy
709: operations using filenames that are supplied by the user from the
710: command line.</a>
1.321 brad 711: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 712: Do not allow users to trick suid programs into re-opening files via
713: /dev/fd.</a>
1.321 brad 714: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 715: A buffer overflow has been found in the Perl interpreter with the
716: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 717: </ul>
718:
719: <li>
1.312 david 720: <a name="37"></a>
721:
722: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
723: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 724: in <a href="anoncvs.html">OpenBSD current</a>. The
725: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
726: you should update your machine.
1.312 david 727:
728: <p>
729: <ul>
1.322 brad 730: <li><a href="errata37.html#xorg">May 2, 2006:
731: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 732: <li><a href="errata37.html#sendmail">Mar 25, 2006:
733: A race condition has been reported to exist in the handling by sendmail
734: of asynchronous signals.</a>
1.320 brad 735: <li><a href="errata37.html#ssh">Feb 12, 2006:
736: Josh Bressers has reported a weakness in OpenSSH caused due to the
737: insecure use of the system(3) function in scp(1) when performing copy
738: operations using filenames that are supplied by the user from the
739: command line.</a>
1.319 brad 740: <li><a href="errata37.html#fd">Jan 5, 2006:
741: Do not allow users to trick suid programs into re-opening files via
742: /dev/fd.</a>
743: <li><a href="errata37.html#perl">Jan 5, 2006:
744: A buffer overflow has been found in the Perl interpreter with the
745: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 746: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 747: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 748: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 749: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 750: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 751: Fix a race condition in sudo(8) that could allow a user
1.315 millert 752: to run arbitrary commands.</a>
1.318 deraadt 753: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 754: Fix a buffer overflow, memory leaks, and NULL pointer
755: dereference in cvs(1).</a>
1.312 david 756: </ul>
757:
758: <li>
1.301 miod 759: <a name="36"></a>
760:
761: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
762: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 763: in <a href="anoncvs.html">OpenBSD current</a>. The
764: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
765: you should update your machine.
1.301 miod 766:
767: <p>
1.302 markus 768: <ul>
1.317 millert 769: <li><a href="errata36.html#libz2">Jul 21, 2005:
770: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 771: <li><a href="errata36.html#libz">Jul 6, 2005:
772: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 773: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 774: Fix a race condition in sudo(8) that could allow a user
1.315 millert 775: to run arbitrary commands.</a>
1.311 deraadt 776: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 777: Fix a buffer overflow, memory leaks, and NULL pointer
778: dereference in cvs(1).</a>
1.311 deraadt 779: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 780: Due to buffer overflows in telnet(1), a malicious
781: server or man-in-the-middle attack could allow
782: execution of arbitrary code with the privileges of
783: the user invoking telnet(1).</a>
1.311 deraadt 784: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 785: More stringent checking should be done in the copy(9)
786: functions to prevent their misuse.</a>
1.311 deraadt 787: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 788: More stringent checking should be done in the copy(9)
789: functions to prevent their misuse.</a>
1.311 deraadt 790: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 791: httpd(8)'s mod_include module fails to properly validate
792: the length of user supplied tag strings prior to copying
1.305 brad 793: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 794: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 795: On systems running isakmpd(8) it is possible for a local
796: user to cause kernel memory corruption and system panic by
1.303 markus 797: setting ipsec(4) credentials on a socket.</a>
1.302 markus 798: </ul>
1.301 miod 799:
800: <li>
1.288 matthieu 801: <a name="35"></a>
1.279 deraadt 802:
1.294 david 803: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 804: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 805: in <a href="anoncvs.html">OpenBSD current</a>. The
806: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
807: you should update your machine.
1.279 deraadt 808:
809: <p>
810: <ul>
1.310 brad 811: <li><a href="errata35.html#cvs4">Apr 28, 2005:
812: Fix a buffer overflow, memory leaks, and NULL pointer
813: dereference in cvs(1).</a>
1.309 brad 814: <li><a href="errata35.html#telnet">Mar 30, 2005:
815: Due to buffer overflows in telnet(1), a malicious
816: server or man-in-the-middle attack could allow
817: execution of arbitrary code with the privileges of
818: the user invoking telnet(1).</a>
1.308 brad 819: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 820: More stringent checking should be done in the copy(9)
821: functions to prevent their misuse.</a>
1.306 brad 822: <li><a href="errata35.html#locore">Feb 28, 2005:
823: More stringent checking should be done in the copy(9)
824: functions to prevent their misuse.</a>
1.304 brad 825: <li><a href="errata35.html#httpd3">Jan 12, 2005:
826: httpd(8)'s mod_include module fails to properly validate
827: the length of user supplied tag strings prior to copying
1.305 brad 828: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 829: <li><a href="errata35.html#pfkey">Dec 14, 2004:
830: On systems running isakmpd(8) it is possible for a local
831: user to cause kernel memory corruption and system panic by
1.303 markus 832: setting ipsec(4) credentials on a socket.</a>
1.301 miod 833: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 834: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 835: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 836: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 837: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 838: httpd(8)'s mod_rewrite module can be made to write one zero byte in
839: an arbitrary memory position outside of a char array, causing a DoS
840: or possibly buffer overflows.</a>
1.301 miod 841: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 842: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 843: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 844: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 845: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 846: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 847: Multiple remote vulnerabilities have been found in the cvs(1)
848: server which can be used by CVS clients to crash or execute
1.293 brad 849: arbitrary code on the server.</a>
1.301 miod 850: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 851: kdc(8) performs inadequate checking of request fields, leading
852: to the possibility of principal impersonation from other
853: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 854: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 855: xdm(1) ignores the requestPort resource and creates a
1.293 brad 856: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 857: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 858: A buffer overflow in the cvs(1) server has been found,
859: which can be used by CVS clients to execute arbitrary code on
1.293 brad 860: the server.</a>
1.301 miod 861: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 862: Integer overflow problems were found in procfs, allowing
1.293 brad 863: reading of arbitrary kernel memory.</a>
1.301 miod 864: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 865: Pathname validation problems have been found in cvs(1),
866: allowing clients and servers access to files outside the
1.293 brad 867: repository or local CVS tree.</a>
1.279 deraadt 868: </ul>
869:
870: <p>
871: <li>
1.288 matthieu 872: <a name="34"></a>
1.261 david 873:
1.294 david 874: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 875: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 876: in <a href="anoncvs.html">OpenBSD current</a>. The
877: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
878: you should update your machine.
1.261 david 879: <p>
880: <ul>
1.302 markus 881: <li><a href="errata34.html#pfkey">Dec 14, 2004:
882: On systems running isakmpd(8) it is possible for a local
883: user to cause kernel memory corruption and system panic by
1.303 markus 884: setting ipsec(4) credentials on a socket.</a>
1.298 brad 885: <li><a href="errata34.html#xpm">Sep 16, 2004:
886: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 887: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
888: httpd(8)'s mod_rewrite module can be made to write one zero byte in
889: an arbitrary memory position outside of a char array, causing a DoS
890: or possibly buffer overflows.</a>
1.294 david 891: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 892: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 893: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 894: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 895: an attacker can delete IPsec tunnels at will.</a>
1.294 david 896: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 897: Multiple remote vulnerabilities have been found in the cvs(1)
898: server which can be used by CVS clients to crash or execute
1.293 brad 899: arbitrary code on the server.</a>
1.294 david 900: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 901: kdc(8) performs inadequate checking of request fields, leading
902: to the possibility of principal impersonation from other
903: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 904: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 905: A buffer overflow in the cvs(1) server has been found,
906: which can be used by CVS clients to execute arbitrary code on
907: the server.</a>
1.294 david 908: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 909: Integer overflow problems were found in procfs, allowing
910: reading of arbitrary kernel memory.</a>
1.294 david 911: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 912: Pathname validation problems have been found in cvs(1),
913: allowing clients and servers access to files outside the
914: repository or local CVS tree.</a>
1.294 david 915: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 916: A missing check for a NULL-pointer dereference may allow a
1.281 otto 917: remote attacker to crash applications using OpenSSL.</a>
1.294 david 918: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 919: Defects in the payload validation and processing functions of
920: isakmpd have been discovered. An attacker could send malformed
921: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 922: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 923: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
924: access module, using IP addresses without a netmask on big endian
925: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 926: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 927: An IPv6 MTU handling problem exists that could be used by an
928: attacker to cause a denial of service attack.</a>
1.294 david 929: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 930: A reference counting bug in shmat(2) could be used to write to
931: kernel memory under certain circumstances.</a>
1.294 david 932: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 933: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 934: by Thomas Walpuski.</a>
1.294 david 935: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 936: It may be possible for a local user to overrun the stack in
937: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 938: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 939: The use of certain ASN.1 encodings or malformed public keys may
940: allow an attacker to mount a denial of service attack against
941: applications linked with ssl(3).</a>
1.261 david 942: </ul>
943:
944: <li>
1.288 matthieu 945: <a name="33"></a>
1.246 deraadt 946:
1.294 david 947: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 948: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 949: in <a href="anoncvs.html">OpenBSD current</a>. The
950: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 951: you should update your machine.
1.246 deraadt 952: <p>
953: <ul>
1.294 david 954: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 955: Pathname validation problems have been found in cvs(1),
956: allowing clients and servers access to files outside the
957: repository or local CVS tree.</a>
1.294 david 958: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 959: A missing check for a NULL-pointer dereference may allow a
1.281 otto 960: remote attacker to crash applications using OpenSSL.</a>
1.294 david 961: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 962: Defects in the payload validation and processing functions of
963: isakmpd have been discovered. An attacker could send malformed
964: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 965: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 966: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
967: access module, using IP addresses without a netmask on big endian
968: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 969: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 970: An IPv6 MTU handling problem exists that could be used by an
971: attacker to cause a denial of service attack.</a>
1.294 david 972: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 973: A reference counting bug in shmat(2) could be used to write to
974: kernel memory under certain circumstances.</a>
1.294 david 975: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 976: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 977: by Thomas Walpuski.</a>
1.294 david 978: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 979: It may be possible for a local user to execute arbitrary code
980: resulting in escalation of privileges due to a stack overrun
981: in compat_ibcs2(8).</a>
1.294 david 982: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 983: The use of certain ASN.1 encodings or malformed public keys may
984: allow an attacker to mount a denial of service attack against
985: applications linked with ssl(3).</a>
1.294 david 986: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 987: Access of freed memory in pf(4) could be used to
1.260 margarid 988: remotely panic a machine using scrub rules.</a>
1.294 david 989: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 990: A buffer overflow in the address parsing in
991: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 992: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 993: OpenSSH versions prior to 3.7 contains a buffer management error
994: that is potentially exploitable.</a>
1.294 david 995: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 996: Root may be able to reduce the security level by taking advantage of
997: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 998: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 999: An improper bounds check in the kernel may allow a local user
1000: to panic the kernel.</a>
1.294 david 1001: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1002: An off-by-one error exists in the C library function realpath(3)
1003: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1004: </ul>
1005:
1.265 miod 1006:
1.247 david 1007: <p>
1.246 deraadt 1008: <li>
1.288 matthieu 1009: <a name="32"></a>
1.224 deraadt 1010:
1.294 david 1011: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 1012: These are the OpenBSD 3.2 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 3.2 is no longer being maintained,
1.265 miod 1015: you should update your machine.
1.224 deraadt 1016: <p>
1017: <ul>
1.294 david 1018: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1019: The use of certain ASN.1 encodings or malformed public keys may
1020: allow an attacker to mount a denial of service attack against
1021: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1022: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 1023: Access of freed memory in pf(4) could be used to
1.260 margarid 1024: remotely panic a machine using scrub rules.</a>
1.294 david 1025: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1026: A buffer overflow in the address parsing in
1027: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1028: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1029: OpenSSH versions prior to 3.7 contains a buffer management error
1030: that is potentially exploitable.</a>
1.294 david 1031: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1032: Fix for a potential security issue in
1033: sendmail(8) with respect to DNS maps.</a>
1.294 david 1034: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1035: An off-by-one error exists in the C library function realpath(3)
1036: may allow an attacker to gain escalated privileges.</a>
1.294 david 1037: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1038: A buffer overflow in the address parsing in
1039: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1040: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1041: A cryptographic weaknesses in the Kerberos v4 protocol can be
1042: exploited on Kerberos v5 as well.</a>
1.294 david 1043: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1044: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1045: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1046: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1047: Various SSL and TLS operations in OpenSSL are vulnerable to
1048: timing attacks.</a>
1.294 david 1049: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1050: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1051: privileges to user daemon.</a>
1.294 david 1052: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1053: A buffer overflow in the envelope comments processing in
1054: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1055: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1056: httpd(8) leaks file inode numbers via ETag header as well as
1057: child PIDs in multipart MIME boundary generation. This could
1058: lead, for example, to NFS exploitation because it uses inode
1059: numbers as part of the file handle.</a>
1.294 david 1060: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1061: In ssl(8) an information leak can occur via timing by performing
1062: a MAC computation even if incorrect block cipher padding has
1063: been found, this is a countermeasure. Also, check for negative
1064: sizes, in allocation routines.</a>
1.294 david 1065: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1066: A double free exists in cvs(1) that could lead to privilege
1067: escalation for cvs configurations where the cvs command is
1.233 margarid 1068: run as a privileged user.</a>
1.294 david 1069: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1070: A buffer overflow exists in named(8) that could lead to a
1071: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1072: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1073: A logic error in the pool kernel memory allocator could cause
1074: memory corruption in low-memory situations, causing the system
1075: to crash.</a>
1.294 david 1076: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1077: An attacker can bypass smrsh(8)'s restrictions and execute
1078: arbitrary commands with the privileges of his own account.</a>
1.294 david 1079: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1080: Network bridges running pf with scrubbing enabled could cause
1081: mbuf corruption, causing the system to crash.</a>
1.294 david 1082: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1083: A buffer overflow can occur in the kadmind(8) daemon, leading
1084: to possible remote crash or exploit.</a>
1.224 deraadt 1085: </ul>
1086:
1.227 miod 1087: <p>
1088: <li>
1.288 matthieu 1089: <a name="31"></a>
1.203 deraadt 1090:
1.294 david 1091: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 1092: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 1093: in <a href="anoncvs.html">OpenBSD current</a>. The
1094: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1095: you should update your machine.
1.203 deraadt 1096:
1097: <p>
1098: <ul>
1.294 david 1099: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1100: A buffer overflow in the address parsing in
1101: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1102: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1103: A cryptographic weaknesses in the Kerberos v4 protocol can be
1104: exploited on Kerberos v5 as well.</a>
1.294 david 1105: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1106: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1107: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1108: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1109: Various SSL and TLS operations in OpenSSL are vulnerable to
1110: timing attacks.</a>
1.294 david 1111: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1112: A buffer overflow in lprm(1) may allow an attacker to gain
1113: root privileges.</a>
1.294 david 1114: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1115: A buffer overflow in the envelope comments processing in
1116: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1117: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1118: In ssl(8) an information leak can occur via timing by performing
1119: a MAC computation even if incorrect block cipher padding has
1120: been found, this is a countermeasure. Also, check for negative
1121: sizes, in allocation routines.</a>
1.294 david 1122: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1123: A double free exists in cvs(1) that could lead to privilege
1124: escalation for cvs configurations where the cvs command is
1.392 tobias 1125: run as a privileged user.</a>
1.294 david 1126: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1127: A buffer overflow exists in named(8) that could lead to a
1128: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1129: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1130: Incorrect argument checking in the getitimer(2) system call
1131: may allow an attacker to crash the system.</a>
1.294 david 1132: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1133: An attacker can bypass smrsh(8)'s restrictions and execute
1134: arbitrary commands with the privileges of his own account.</a>
1.294 david 1135: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1136: A buffer overflow can occur in the kadmind(8) daemon, leading
1137: to possible remote crash or exploit.</a>
1.294 david 1138: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1139: Incorrect argument checking in the setitimer(2) system call
1140: may allow an attacker to write to kernel memory.</a>
1.294 david 1141: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1142: An insufficient boundary check in the select system call
1.220 miod 1143: allows an attacker to overwrite kernel memory and execute arbitrary code
1144: in kernel context.</a>
1.294 david 1145: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1146: Several remote buffer overflows can occur in the SSL2 server and SSL3
1147: client of the ssl(8) library, as in the ASN.1 parser code in the
1148: crypto(3) library, all of them being potentially remotely
1149: exploitable.</a>
1.294 david 1150: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1151: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1152: possible remote crash.</a>
1.294 david 1153: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1154: A race condition exists in the pppd(8) daemon which may cause it to
1155: alter the file permissions of an arbitrary file.</a>
1.294 david 1156: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1157: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1158: crash.</a>
1.294 david 1159: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1160: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1161: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1162: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1163: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1164: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1165: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1166: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1167: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1168: input validation error that can result in an integer overflow and
1169: privilege escalation.</a>
1.294 david 1170: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1171: A buffer overflow can occur during the interpretation of chunked
1172: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1173: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1174: Under certain conditions, on systems using YP with netgroups
1175: in the password database, it is possible that sshd(8) does
1176: ACL checks for the requested user name but uses the password
1177: database entry of a different user for authentication. This
1178: means that denied users might authenticate successfully
1179: while permitted users could be locked out.</a>
1.294 david 1180: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1181: A race condition exists that could defeat the kernel's
1182: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1183: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1184: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1185: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1186: A local user can gain super-user privileges due to a buffer
1187: overflow in sshd(8) if AFS has been configured on the system
1188: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1189: in the sshd_config file.</a>
1.203 deraadt 1190: </ul>
1191:
1.235 miod 1192: <p>
1.203 deraadt 1193: <li>
1.288 matthieu 1194: <a name="30"></a>
1.187 deraadt 1195:
1.294 david 1196: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1197: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1198: in <a href="anoncvs.html">OpenBSD current</a>. The
1199: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1200: you should update your machine.
1.187 deraadt 1201:
1202: <p>
1203: <ul>
1.294 david 1204: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1205: A buffer overflow exists in named(8) that could lead to a
1206: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1207: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1208: Incorrect argument checking in the getitimer(2) system call
1209: may allow an attacker to crash the system.</a>
1.294 david 1210: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1211: An attacker can bypass smrsh(8)'s restrictions and execute
1212: arbitrary commands with the privileges of his own account.</a>
1.294 david 1213: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1214: A buffer overflow can occur in the kadmind(8) daemon, leading
1215: to possible remote crash or exploit.</a>
1.294 david 1216: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1217: Incorrect argument checking in the setitimer(2) system call
1218: may allow an attacker to write to kernel memory.</a>
1.294 david 1219: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1220: An insufficient boundary check in the select and poll system calls
1221: allows an attacker to overwrite kernel memory and execute arbitrary code
1222: in kernel context.</a>
1.294 david 1223: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1224: Several remote buffer overflows can occur in the SSL2 server and SSL3
1225: client of the ssl(8) library, as in the ASN.1 parser code in the
1226: crypto(3) library, all of them being potentially remotely
1227: exploitable.</a>
1.294 david 1228: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1229: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1230: possible remote crash.</a>
1.294 david 1231: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1232: A race condition exists in the pppd(8) daemon which may cause it to
1233: alter the file permissions of an arbitrary file.</a>
1.294 david 1234: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1235: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1236: crash.</a>
1.294 david 1237: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1238: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1239: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1240: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1241: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1242: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1243: input validation error that can result in an integer overflow and
1244: privilege escalation.</a>
1.294 david 1245: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1246: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1247: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1248: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1249: A buffer overflow can occur during the interpretation of chunked
1250: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1251: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1252: A race condition exists that could defeat the kernel's
1253: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1254: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1255: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1256: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1257: A local user can gain super-user privileges due to a buffer
1258: overflow in sshd(8) if AFS has been configured on the system
1259: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1260: in the sshd_config file.</a>
1.294 david 1261: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1262: The mail(1) was interpreting tilde escapes even when invoked
1263: in non-interactive mode. As mail(1) is called as root from cron,
1264: this can lead to a local root compromise.</a>
1.294 david 1265: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1266: Under certain conditions, on systems using YP with netgroups in
1267: the password database, it is possible for the rexecd(8) and rshd(8)
1268: daemons to execute a shell from a password database entry for a
1269: different user. Similarly, atrun(8) may change to the wrong
1270: home directory when running jobs.</a>
1.294 david 1271: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1272: A potential double free() exists in the zlib library;
1273: this is not exploitable on OpenBSD.
1274: The kernel also contains a copy of zlib; it is not
1275: currently known if the kernel zlib is exploitable.</a>
1.294 david 1276: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1277: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1278: may allow a local user to gain super-user privileges.</a>
1.294 david 1279: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1280: A race condition between the ptrace(2) and execve(2) system calls
1281: allows an attacker to modify the memory contents of suid/sgid
1282: processes which could lead to compromise of the super-user account.</a>
1.294 david 1283: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1284: There is a security hole in sudo(8) that can be exploited
1285: when the Postfix sendmail replacement is installed that may
1286: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1287: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1288: An attacker can trick a machine running the lpd daemon into
1289: creating new files in the root directory from a machine with
1290: remote line printer access.</a>
1.294 david 1291: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1292: The vi.recover script can be abused in such a way as
1293: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1294: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1295: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1296: resulting in a crash.</a>
1.294 david 1297: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1298: A security hole that may allow an attacker to partially authenticate
1299: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1300: </ul>
1301:
1302: <p>
1303: <li>
1.288 matthieu 1304: <a name="29"></a>
1.173 deraadt 1305:
1.294 david 1306: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1307: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1308: in <a href="anoncvs.html">OpenBSD current</a>. The
1309: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1310: you should update your machine.
1311:
1.173 deraadt 1312:
1313: <p>
1314: <ul>
1.294 david 1315: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1316: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1317: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1318: A race condition exists that could defeat the kernel's
1319: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1320: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1321: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1322: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1323: A local user can gain super-user privileges due to a buffer
1324: overflow in sshd(8) if AFS has been configured on the system
1325: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1326: in the sshd_config file.</a>
1.294 david 1327: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1328: The mail(1) was interpreting tilde escapes even when invoked
1329: in non-interactive mode. As mail(1) is called as root from cron,
1330: this can lead to a local root compromise.</a>
1.294 david 1331: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1332: A potential double free() exists in the zlib library;
1333: this is not exploitable on OpenBSD.
1334: The kernel also contains a copy of zlib; it is not
1335: currently known if the kernel zlib is exploitable.</a>
1.294 david 1336: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1337: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1338: may allow a local user to gain super-user privileges.</a>
1.294 david 1339: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1340: A race condition between the ptrace(2) and execve(2) system calls
1341: allows an attacker to modify the memory contents of suid/sgid
1342: processes which could lead to compromise of the super-user account.</a>
1.294 david 1343: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1344: There is a security hole in sudo(8) that can be exploited
1345: when the Postfix sendmail replacement is installed that may
1346: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1347: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1348: An attacker can trick a machine running the lpd daemon into
1349: creating new files in the root directory from a machine with
1350: remote line printer access.</a>
1.294 david 1351: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1352: The vi.recover script can be abused in such a way as
1353: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1354: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1355: A security hole exists in uuxqt(8) that may allow an
1356: attacker to gain root privileges.</a>
1.294 david 1357: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1358: A security hole exists in lpd(8) that may allow an
1359: attacker to gain root privileges if lpd is running.</a>
1.294 david 1360: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1361: A security hole exists in sendmail(8) that may allow an
1362: attacker on the local host to gain root privileges.</a>
1.294 david 1363: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1364: A kernel buffer overflow in the NFS code can be used to execute
1365: arbitrary code by users with mount privileges (only root by
1.181 millert 1366: default).</a>
1.294 david 1367: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1368: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1369: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1370: sshd(8) allows users to delete arbitrary files named "cookies"
1371: if X11 forwarding is enabled. X11 forwarding is disabled
1372: by default.</a>
1.294 david 1373: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1374: Programs using the fts routines can be tricked into changing
1375: into the wrong directory.</a>
1.294 david 1376: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1377: Sendmail signal handlers contain unsafe code,
1378: leading to numerous race conditions.</a>
1.173 deraadt 1379: </ul>
1380:
1381: <p>
1382: <li>
1.288 matthieu 1383: <a name="28"></a>
1.152 deraadt 1384:
1.294 david 1385: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1386: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1387: in <a href="anoncvs.html">OpenBSD current</a>. The
1388: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1389: you should update your machine.
1390:
1.152 deraadt 1391:
1392: <p>
1393: <ul>
1.294 david 1394: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1395: A security hole exists in uuxqt(8) that may allow an
1396: attacker to gain root privileges.</a>
1.294 david 1397: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1398: A security hole exists in lpd(8) that may allow an
1399: attacker to gain root privileges if lpd is running.</a>
1.294 david 1400: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1401: A security hole exists in sendmail(8) that may allow an
1402: attacker on the local host to gain root privileges.</a>
1.294 david 1403: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1404: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1405: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1406: Programs using the fts routines can be tricked into changing
1407: into the wrong directory.</a>
1.294 david 1408: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1409: Sendmail signal handlers contain unsafe code,
1410: leading to numerous race conditions.</a>
1.294 david 1411: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1412: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1413: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1414: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1415: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1416: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1417: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1418: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1419: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1420: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1421: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1422: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1423: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1424: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1425: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1426: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1427: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1428: rnd(4) did not use all of its input when written to.</a>
1.294 david 1429: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1430: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1431: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1432: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1433: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1434: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1435: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1436: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1437: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1438: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1439: </ul>
1440:
1441: <p>
1442: <li>
1.288 matthieu 1443: <a name="27"></a>
1.124 deraadt 1444:
1.294 david 1445: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1446: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1447: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1448: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1449:
1450: <p>
1451: <ul>
1.294 david 1452: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1453: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1454: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1455: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1456: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1457: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1458: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1459: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1460: (patch included)</a>
1.294 david 1461: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1462: X11 libraries have 2 potential overflows in xtrans code.
1463: (patch included)</a>
1.294 david 1464: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1465: Apache mod_rewrite and mod_vhost_alias modules could expose files
1466: on the server in certain configurations if used.
1467: (patch included)</a>
1.294 david 1468: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1469: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1470: TERMPATH and TERMCAP environment variables as it should.
1471: (patch included)</a>
1.294 david 1472: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1473: There are printf-style format string bugs in several privileged
1474: programs. (patch included)</a>
1.294 david 1475: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1476: libcurses honored terminal descriptions in the $HOME/.terminfo
1477: directory as well as in the TERMCAP environment variable for
1478: setuid and setgid applications.
1.146 deraadt 1479: (patch included)</a>
1.294 david 1480: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1481: A format string vulnerability exists in talkd(8).
1482: (patch included)</a>
1.294 david 1483: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1484: A format string vulnerability exists in the pw_error() function of the
1485: libutil library, yielding localhost root through chpass(1).
1486: (patch included)</a>
1.294 david 1487: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1488: Bad ESP/AH packets could cause a crash under certain conditions.
1489: (patch included)</a>
1.294 david 1490: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1491: A format string vulnerability (localhost root) exists in xlock(1).
1492: (patch included)</a>
1.294 david 1493: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1494: Various bugs found in X11 libraries have various side effects, almost
1495: completely denial of service in OpenBSD.
1496: (patch included)</a>
1.294 david 1497: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1498: Just like pretty much all the other unix ftp daemons
1499: on the planet, ftpd had a remote root hole in it.
1500: Luckily, ftpd was not enabled by default.
1.137 deraadt 1501: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1502: (patch included)</a>
1.294 david 1503: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1504: Mopd, very rarely used, contained some buffer overflows.
1505: (patch included)</a>
1.294 david 1506: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1507: libedit would check for a <b>.editrc</b> file in the current
1508: directory. Not known to be a real security issue, but a patch
1509: is available anyways.
1510: (patch included)</a>
1.294 david 1511: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1512: A serious bug in dhclient(8) could allow strings from a
1513: malicious dhcp server to be executed in the shell as root.
1514: (patch included)</a>
1.294 david 1515: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1516: A serious bug in isakmpd(8) policy handling wherein
1517: policy verification could be completely bypassed in isakmpd.
1518: (patch included)</a>
1.294 david 1519: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1520: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1521: should not be used, and results in security problems on
1522: other operating systems.</a>
1.294 david 1523: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1524: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1525: (patch included)</a>
1.294 david 1526: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1527: Improper use of ipf <i>keep-state</i> rules can result
1528: in firewall rules being bypassed. (patch included)</a>
1529:
1.124 deraadt 1530: </ul>
1531:
1532: <p>
1533: <li>
1.288 matthieu 1534: <a name="26"></a>
1.119 deraadt 1535:
1.294 david 1536: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1537: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1538: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1539: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1540:
1541: <p>
1542: <ul>
1.294 david 1543: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1544: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1545: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1546: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1547: Improper use of ipf <i>keep-state</i> rules can result
1548: in firewall rules being bypassed. (patch included)</a>
1.294 david 1549: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1550: xlockmore has a bug which a localhost attacker can use to gain
1551: access to the encrypted root password hash (which is normally
1.245 miod 1552: encoded using blowfish</a> (see
1.294 david 1553: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1554: crypt(3)</a>)
1.245 miod 1555: (patch included).
1.294 david 1556: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1557: Systems running with procfs enabled and mounted are
1558: vulnerable to a very tricky exploit. procfs is not
1559: mounted by default.
1560: (patch included).</a>
1.294 david 1561: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1562: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1563: thus exposing the system to a race where the aliases file
1564: did not exist.
1.119 deraadt 1565: (patch included).</a>
1.294 david 1566: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1567: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1568: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1569: A buffer overflow in the RSAREF code included in the
1570: USA version of libssl, is possibly exploitable in
1571: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1572: (patch included).<br></a>
1573: <strong>Update:</strong> Turns out that this was not exploitable
1574: in any of the software included in OpenBSD 2.6.
1.294 david 1575: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1576: Any user could change interface media configurations, resulting in
1577: a localhost denial of service attack.
1.121 deraadt 1578: (patch included).</a>
1.119 deraadt 1579: </ul>
1580:
1581: <p>
1582: <li>
1.288 matthieu 1583: <a name="25"></a>
1.106 deraadt 1584:
1.294 david 1585: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1586: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1587: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1588: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1589:
1.96 deraadt 1590: <p>
1.104 deraadt 1591: <ul>
1.294 david 1592: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1593: In cron(8), make sure argv[] is NULL terminated in the
1594: fake popen() and run sendmail as the user, not as root.
1595: (patch included).</a>
1.294 david 1596: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1597: filesystems had an overrun in their handling of uio_offset
1598: in their readdir() routines. (These filesystems are not
1599: enabled by default). (patch included).</a>
1.294 david 1600: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1601: when we execve() a new process. (patch included).</a>
1.294 david 1602: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1603: been handled by IPsec may be transmitted as cleartext.
1604: PF_KEY SA expirations may leak kernel resources.
1605: (patch included).</a>
1.294 david 1606: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1607: motd re-writing and change the find(1) to use -execdir
1608: (patch included).</a>
1.294 david 1609: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1610: users to chflags(2) or fchflags(2) on character or block devices
1611: which they may currently be the owner of (patch included).</a>
1.294 david 1612: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1613: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1614: </ul>
1615:
1.106 deraadt 1616: <p>
1617: <li>
1.288 matthieu 1618: <a name="24"></a>
1.235 miod 1619:
1.294 david 1620: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1621: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1622: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1623: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1624:
1.96 deraadt 1625: <p>
1.75 deraadt 1626: <ul>
1.294 david 1627: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1628: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1629: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1630: another kernel crash case caused by the <strong>crashme</strong>
1631: program (patch included).</a>
1.294 david 1632: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1633: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1634: (patch included).</a>
1.294 david 1635: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1636: existed in ping(8). (patch included).</a>
1.294 david 1637: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1638: the ipq, which could permit an attacker to cause a crash.
1639: (patch included).</a>
1.294 david 1640: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1641: kernel between accept(2) and select(2) could permit an attacker
1642: to hang sockets from remote.
1643: (patch included).</a>
1.294 david 1644: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1645: bog the machine excessively and cause problems.
1646: (patch included).</a>
1.294 david 1647: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1648: DDB interacted to possibly cause a crash.
1649: (patch included).</a>
1.294 david 1650: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1651: (patch included).</a>
1.294 david 1652: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1653: problem in bootpd(8). (patch included).</a>
1.294 david 1654: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1655: exploitable problem relating to environment variables in termcap
1656: and curses. (patch included).</a>
1.294 david 1657: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1658: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1659: </ul>
1660:
1.106 deraadt 1661: <p>
1662: <li>
1.288 matthieu 1663: <a name="23"></a>
1.235 miod 1664:
1.294 david 1665: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1666: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1667: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1668: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1669:
1.96 deraadt 1670: <p>
1.53 matthieu 1671: <ul>
1.294 david 1672: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1673: problem in bootpd(8). (patch included).</a>
1.294 david 1674: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1675: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1676: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1677: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1678: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1679: chpass(1) has a file descriptor leak which allows an
1680: attacker to modify /etc/master.passwd.</a>
1.294 david 1681: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1682: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1683: should not be executed with fd slots 0, 1, or 2 free.
1684: (patch included).</a>
1.294 david 1685: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1686: libraries (patches included).</a>
1.294 david 1687: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1688: processes too permissive (4th revision patch included).</a>
1.294 david 1689: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1690: of immutable and append-only file flags. (patch included).</a>
1.294 david 1691: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1692: if IPSEC is enabled (patch included).</a>
1.294 david 1693: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1694: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1695: </ul>
1.9 deraadt 1696:
1.106 deraadt 1697: <p>
1698: <li>
1.288 matthieu 1699: <a name="22"></a>
1.235 miod 1700:
1.294 david 1701: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1702: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1703: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1704: still exist in other operating systems. (The supplied patches are for
1705: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1706:
1.96 deraadt 1707: <p>
1.9 deraadt 1708: <ul>
1.294 david 1709: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1710: packets if IPSEC is enabled (patch included).</a>
1.294 david 1711: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1712: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1713: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1714: (patch included).</a>
1.294 david 1715: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1716: (patch included).</a>
1.294 david 1717: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1718: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1719: (patch included).</a>
1.294 david 1720: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1721: export (patch included).</a>
1.112 philen 1722: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1723: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1724: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1725: Acceptance.</a>
1.294 david 1726: A patch is available <a href="errata22.html#sourceroute">here</a>.
1727: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1728: flaw (patch included).</a>
1.294 david 1729: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1730: </ul>
1731:
1.106 deraadt 1732: <p>
1733: <li>
1.288 matthieu 1734: <a name="21"></a>
1.235 miod 1735:
1.294 david 1736: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1737: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1738: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1739: exist in other operating systems. (If you are running OpenBSD 2.1, we
1740: would strongly recommend an upgrade to the newest release, as this
1741: patch list only attempts at fixing the most important security
1742: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1743: security problems. Many of those problems were solved in ways which
1744: make it hard for us to provide patches).
1745:
1.96 deraadt 1746: <p>
1.52 deraadt 1747: <ul>
1.112 philen 1748: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1749: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1750: (patch included)</a>
1.112 philen 1751: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1752: </ul>
1.51 deraadt 1753:
1.106 deraadt 1754: <p>
1755: <li>
1.288 matthieu 1756: <a name="20"></a>
1.235 miod 1757:
1.294 david 1758: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1759: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1760: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1761: exist in other operating systems. (If you are running OpenBSD 2.0, we
1762: commend you for being there back in the old days!, but you're really
1763: missing out if you don't install a new version!)
1764:
1765: <p>
1766: <ul>
1.112 philen 1767: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1768: resolver (patch included)</a>
1769: <li>Many others... if people can hunt them down, please let me know
1770: and we'll put them up here.
1771: </ul>
1.51 deraadt 1772: <p>
1.106 deraadt 1773:
1.288 matthieu 1774: <a name="watching"></a>
1.294 david 1775: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1776:
1.21 deraadt 1777: Since we take a proactive stance with security, we are continually
1778: finding and fixing new security problems. Not all of these problems
1.80 espie 1779: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1780: confirmed to be exploitable; many simple bugs we fix do turn out to
1781: have security consequences we could not predict. We do not have the
1782: time resources to make these changes available in the above format.<p>
1.21 deraadt 1783:
1784: Thus there are usually minor security fixes in the current source code
1785: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1786: guarantee that these problems are of minimal impact and unproven
1.44 ian 1787: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1788: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1789:
1.45 deraadt 1790: People who are really concerned with security can do a number of
1791: things:<p>
1.21 deraadt 1792:
1793: <ul>
1794: <li>If you understand security issues, watch our
1.294 david 1795: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1796: eye out for things which appear security related. Since
1.21 deraadt 1797: exploitability is not proven for many of the fixes we make,
1798: do not expect the relevant commit message to say "SECURITY FIX!".
1799: If a problem is proven and serious, a patch will be available
1800: here very shortly after.
1.161 horacio 1801: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1802: security-announce mailing list</a> which will notify you for every
1.186 ian 1803: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1804: and instruct you on how to patch the problem.
1.21 deraadt 1805: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1806: complete system build from time to time (read /usr/src/Makefile
1807: carefully). Users can make the assumption that the current
1808: source tree always has stronger security than the previous release.
1.45 deraadt 1809: However, building your own system from source code is not trivial;
1.265 miod 1810: it is nearly 600MB of source code, and problems do occur as we
1.45 deraadt 1811: transition between major releases.
1.115 ericj 1812: <li>Install a binary snapshot for your
1.80 espie 1813: architecture, which are made available fairly often. For
1.29 deraadt 1814: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1815: </ul>
1816:
1.9 deraadt 1817: <p>
1.288 matthieu 1818: <a name="reporting"></a>
1.294 david 1819: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1820:
1.5 deraadt 1821: <p> If you find a new security problem, you can mail it to
1.294 david 1822: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1823: <br>
1.5 deraadt 1824: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1825: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1826:
1.107 deraadt 1827: <p>
1.288 matthieu 1828: <a name="papers"></a>
1.294 david 1829: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1830:
1.389 lum 1831: Numerous
1832: <a href="papers/">papers</a> have been written by OpenBSD team members,
1833: many dedicated to security.
1.294 david 1834: </ul>
1.106 deraadt 1835:
1.2 deraadt 1836: <hr>
1.294 david 1837: <a href="index.html"><img height=24 width=24 src="back.gif" border=0 alt="OpenBSD"></a>
1838: <a href="mailto:www@openbsd.org">www@openbsd.org</a>
1.24 deraadt 1839: <br>
1.394 ! lum 1840: <small>$OpenBSD: security.html,v 1.393 2013/01/25 15:18:35 sthen Exp $</small>
1.1 deraadt 1841:
1.24 deraadt 1842: </body>
1843: </html>
![[BACK]](/icons/back.gif){kind=icon}
Return to security.html CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / www