Annotation of www/security.html, Revision 1.406
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>
1.345 tom 6: <link rel="alternate" type="application/rss+xml" title="OpenBSD errata (external)" href="http://www.undeadly.org/cgi?action=errata">
1.294 david 7: <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
1.1 deraadt 8: <meta name="resource-type" content="document">
9: <meta name="description" content="OpenBSD advisories">
10: <meta name="keywords" content="openbsd,main">
11: <meta name="distribution" content="global">
1.403 sthen 12: <meta name="copyright" content="This document copyright 1997-2014 by OpenBSD.">
1.1 deraadt 13: </head>
14:
1.274 david 15: <body bgcolor="#ffffff" text="#000000" link="#23238E">
1.210 jsyn 16: <a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
1.106 deraadt 17: <p>
1.294 david 18: <h2><font color="#e00000">Security</font></h2>
19: <hr>
1.1 deraadt 20:
1.406 ! deraadt 21: For security advisories for specific releases, click below:
1.294 david 22: <p>
1.406 ! deraadt 23:
1.225 deraadt 24: <a href="#20">2.0</a>,
25: <a href="#21">2.1</a>,
26: <a href="#22">2.2</a>,
27: <a href="#23">2.3</a>,
28: <a href="#24">2.4</a>,
29: <a href="#25">2.5</a>,
30: <a href="#26">2.6</a>,
31: <a href="#27">2.7</a>,
32: <a href="#28">2.8</a>,
33: <a href="#29">2.9</a>,
34: <a href="#30">3.0</a>,
35: <a href="#31">3.1</a>,
1.246 deraadt 36: <a href="#32">3.2</a>,
1.261 david 37: <a href="#33">3.3</a>,
1.387 miod 38: <a href="#34">3.4</a>,
1.388 miod 39: <a href="#35">3.5</a>,
1.406 ! deraadt 40: <a href="#36">3.6</a>,
1.365 deraadt 41: <br>
1.318 deraadt 42: <a href="#37">3.7</a>,
1.321 brad 43: <a href="#38">3.8</a>,
1.334 brad 44: <a href="#39">3.9</a>,
1.348 merdely 45: <a href="#40">4.0</a>,
46: <a href="#41">4.1</a>,
1.357 brad 47: <a href="#42">4.2</a>,
1.365 deraadt 48: <a href="#43">4.3</a>,
1.377 tobias 49: <a href="#44">4.4</a>,
1.378 jasper 50: <a href="#45">4.5</a>,
1.385 jasper 51: <a href="#46">4.6</a>,
1.387 miod 52: <a href="#47">4.7</a>,
53: <a href="#48">4.8</a>,
1.390 sthen 54: <a href="#49">4.9</a>,
55: <a href="#50">5.0</a>,
1.394 lum 56: <a href="#51">5.1</a>,
1.395 sthen 57: <a href="#52">5.2</a>,
1.398 sthen 58: <a href="#53">5.3</a>,
1.406 ! deraadt 59: <br>
1.405 deraadt 60: <a href="#54">5.4</a>,
61: <a href="#55">5.5</a>.
1.406 ! deraadt 62: <br>
1.56 deraadt 63: <hr>
64:
1.294 david 65: <a name="goals"></a>
1.278 deraadt 66: <ul>
1.406 ! deraadt 67: <li><h3><font color="#e00000">Goals</font></h3><p>
1.22 deraadt 68:
1.14 deraadt 69: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 70: ONE in the industry for security (if we are not already there). Our
71: open software development model permits us to take a more
72: uncompromising view towards increased security than Sun, SGI, IBM, HP,
73: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 74: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 75: cryptography</a>, we are able to take cryptographic approaches towards
76: fixing security problems.<p>
1.18 deraadt 77:
1.288 matthieu 78: <a name="disclosure"></a>
1.294 david 79: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 80:
1.45 deraadt 81: Like many readers of the
1.196 jufi 82: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 83: BUGTRAQ mailing list</a>,
1.106 deraadt 84: we believe in full disclosure of security problems. In the
85: operating system arena, we were probably the first to embrace
86: the concept. Many vendors, even of free software, still try
87: to hide issues from their users.<p>
88:
89: Security information moves very fast in cracker circles. On the other
90: hand, our experience is that coding and releasing of proper security
91: fixes typically requires about an hour of work -- very fast fix
92: turnaround is possible. Thus we think that full disclosure helps the
93: people who really care about security.<p>
94:
1.288 matthieu 95: <a name="process"></a>
1.294 david 96: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 97:
1.12 deraadt 98: Our security auditing team typically has between six and twelve
1.45 deraadt 99: members who continue to search for and fix new security holes. We
100: have been auditing since the summer of 1996. The process we follow to
101: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 102: every critical software component. We are not so much looking for
103: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 104: years later someone discovers the problem used to be a security
1.106 deraadt 105: issue, and we fixed it because it was just a bug, well, all the
106: better. Flaws have been found in just about every area of the system.
107: Entire new classes of security problems have been found during our
108: audit, and often source code which had been audited earlier needs
109: re-auditing with these new flaws in mind. Code often gets audited
110: multiple times, and by multiple people with different auditing
111: skills.<p>
1.12 deraadt 112:
1.94 deraadt 113: Some members of our security auditing team worked for Secure Networks,
114: the company that made the industry's premier network security scanning
115: software package Ballista (Secure Networks got purchased by Network
116: Associates, Ballista got renamed to Cybercop Scanner, and well...)
117: That company did a lot of security research, and thus fit in well
1.106 deraadt 118: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
119: colours since day 1.<p>
1.31 deraadt 120:
1.34 deraadt 121: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 122: In most cases we have found that the determination of exploitability
123: is not an issue. During our ongoing auditing process we find many
124: bugs, and endeavor to fix them even though exploitability is not
125: proven. We fix the bug, and we move on to find other bugs to fix. We
126: have fixed many simple and obvious careless programming errors in code
127: and only months later discovered that the problems were in fact
128: exploitable. (Or, more likely someone on
1.197 jufi 129: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 130: would report that other operating systems were vulnerable to a `newly
131: discovered problem', and then it would be discovered that OpenBSD had
132: been fixed in a previous release). In other cases we have been saved
133: from full exploitability of complex step-by-step attacks because we
134: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 135: managed such a success is the lpd advisory that Secure Networks put out.
136: <p>
1.29 deraadt 137:
1.288 matthieu 138: <a name="newtech"></a>
1.294 david 139: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 140:
141: As we audit source code, we often invent new ways of solving problems.
142: Sometimes these ideas have been used before in some random application
143: written somewhere, but perhaps not taken to the degree that we do.
144: <p>
145:
146: <ul>
147: <li>strlcpy() and strlcat()
148: <li>Memory protection purify
149: <ul>
150: <li>W^X
151: <li>.rodata segment
152: <li>Guard pages
153: <li>Randomized malloc()
154: <li>Randomized mmap()
155: <li>atexit() and stdio protection
156: </ul>
1.295 otto 157: <li>Privilege separation
1.278 deraadt 158: <li>Privilege revocation
159: <li>Chroot jailing
160: <li>New uids
161: <li>ProPolice
162: <li>... and others
163: </ul>
164: <p>
165:
1.294 david 166: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 167:
1.45 deraadt 168: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 169: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 170: commonplace in security forums like
1.197 jufi 171: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 172:
1.45 deraadt 173: The most intense part of our security auditing happened immediately
1.80 espie 174: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 175: over the last third of 1996 and first half of 1997. Thousands (yes,
176: thousands) of security issues were fixed rapidly over this year-long
177: period; bugs like the standard buffer overflows, protocol
178: implementation weaknesses, information gathering, and filesystem
179: races. Hence most of the security problems that we encountered were
180: fixed before our 2.1 release, and then a far smaller number needed
181: fixing for our 2.2 release. We do not find as many problems anymore,
182: it is simply a case of diminishing returns. Recently the security
183: problems we find and fix tend to be significantly more obscure or
184: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 185:
1.35 deraadt 186: <ul>
1.45 deraadt 187: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 188: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 189: to search for more complicated exploits, so we will too.
190: <li>Finding and fixing subtle flaws in complicated software is
191: a lot of fun.
1.35 deraadt 192: </ul>
1.106 deraadt 193: <p>
1.15 deraadt 194:
1.14 deraadt 195: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 196: to find and fix new security flaws.<p>
1.12 deraadt 197:
1.288 matthieu 198: <a name="default"></a>
1.294 david 199: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 200:
201: To ensure that novice users of OpenBSD do not need to become security
202: experts overnight (a viewpoint which other vendors seem to have), we
203: ship the operating system in a Secure by Default mode. All non-essential
204: services are disabled. As the user/administrator becomes more familiar
205: with the system, he will discover that he has to enable daemons and other
206: parts of the system. During the process of learning how to enable a new
207: service, the novice is more likely to learn of security considerations.<p>
208:
209: This is in stark contrast to the increasing number of systems that
210: ship with NFS, mountd, web servers, and various other services enabled
211: by default, creating instantaneous security problems for their users
212: within minutes after their first install.<p>
213:
1.288 matthieu 214: <a name="crypto"></a>
1.294 david 215: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 216:
217: And of course, since the OpenBSD project is based in Canada, it is possible
218: for us to integrate cryptography. For more information, read the page
1.116 deraadt 219: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 220:
1.294 david 221: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 222:
223: <li>
1.398 sthen 224: <a name="54"></a>
225:
226: <h3><font color="#e00000">OpenBSD 5.4 Security Advisories</font></h3>
227: These are the OpenBSD 5.4 advisories -- all these problems are solved
228: in <a href=anoncvs.html>OpenBSD current</a> and the
229: <a href=stable.html>patch branch</a>.
230:
231: <p>
232: <ul>
233: <li><a href="errata54.html#002_sshgcm">November 7, 2013:
234: Memory corruption in post-authentication sshd process if AES-GCM cipher
235: is selected</a>
236: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
237: <li><a href="errata54.html#004_nginx">November 21, 2013:
238: Security restriction bypass in certain nginx(8) configurations</a>
239: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
240: <br>
1.403 sthen 241: <li><a href="errata54.html#006_libXfont">January 10, 2014:
1.400 matthieu 242: Buffer overflow in parsing of BDF font files</a>
1.401 matthieu 243: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.398 sthen 244: </ul>
245:
246: <li>
1.395 sthen 247: <a name="53"></a>
248:
249: <h3><font color="#e00000">OpenBSD 5.3 Security Advisories</font></h3>
250: These are the OpenBSD 5.3 advisories -- all these problems are solved
251: in <a href=anoncvs.html>OpenBSD current</a> and the
252: <a href=stable.html>patch branch</a>.
253:
254: <p>
255: <ul>
1.398 sthen 256: <li><a href="errata53.html#009_sshgcm">November 7, 2013:
257: Memory corruption in post-authentication sshd process if AES-GCM cipher
258: is selected</a>
259: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
260: <li><a href="errata53.html#011_nginx">November 21, 2013:
261: Security restriction bypass in certain nginx(8) configurations</a>
262: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 263: <li><a href="errata53.html#013_libXfont">January 10, 2014:
1.402 matthieu 264: Buffer overflow in parsing of BDF font files</a>
265: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.395 sthen 266: </ul>
267:
1.399 deraadt 268: <br><p><b>
269: OpenBSD 5.2 and earlier releases are not supported anymore. The following
270: paragraphs only list advisories issued while they were maintained; these
271: releases are likely to be affected by the advisories for more recent releases.
272: </b><p>
273:
1.395 sthen 274: <li>
1.393 sthen 275: <a name="52"></a>
276:
277: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
278: These are the OpenBSD 5.2 advisories -- all these problems are solved
279: in <a href=anoncvs.html>OpenBSD current</a> and the
280: <a href=stable.html>patch branch</a>.
281:
282: <p>
283: <ul>
284: None yet!
285: </ul>
286:
287: <li>
1.390 sthen 288: <a name="51"></a>
289:
290: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
291: These are the OpenBSD 5.1 advisories -- all these problems are solved
292: in <a href=anoncvs.html>OpenBSD current</a> and the
293: <a href=stable.html>patch branch</a>.
294:
295: <p>
296: <ul>
1.393 sthen 297: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
298: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 299: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 300: </ul>
301:
302: <li>
1.388 miod 303: <a name="50"></a>
304:
305: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
306: These are the OpenBSD 5.0 advisories -- all these problems are solved
307: in <a href=anoncvs.html>OpenBSD current</a> and the
308: <a href=stable.html>patch branch</a>.
309:
310: <p>
311: <ul>
1.393 sthen 312: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
313: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 314: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 315: </ul>
316:
317: <li>
1.387 miod 318: <a name="49"></a>
319:
320: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
321: These are the OpenBSD 4.9 advisories -- all these problems are solved
322: in <a href=anoncvs.html>OpenBSD current</a> and the
323: <a href=stable.html>patch branch</a>.
324:
325: <p>
326: <ul>
327: None yet!
328: </ul>
329:
330: <li>
331: <a name="48"></a>
332:
333: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
334: These are the OpenBSD 4.8 advisories -- all these problems are solved
335: in <a href=anoncvs.html>OpenBSD current</a> and the
336: <a href=stable.html>patch branch</a>.
337:
338: <p>
339: <ul>
340: <li><a href="errata48.html#009_pf">February 16, 2011:
341: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
342: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
343: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
344: prefixes "10.1.1.1/30") are not affected.</a>
345: <li><a href="errata48.html#008_openssl">February 11, 2011:
346: An incorrectly formatted ClientHello handshake message could cause
347: OpenSSL to parse past the end of the message. An attacker could use
348: this flaw to trigger an invalid memory access, causing a crash of an
349: application linked to OpenSSL. As well, certain applications may expose
350: the contents of parsed OCSP extensions, specifically the OCSP nonce
351: extension.
352: <br>
353: Applications are only affected if they act as a server and call
354: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
355: that nothing in the base OS uses this. Apache httpd started using this
356: in v2.3.3; this is newer than the version in ports.</a>
357: <li><a href="errata48.html#005_pf">December 17, 2010:
358: Insufficent initialization of the pf rule structure in the ioctl
359: handler may allow userland to modify kernel memory. By default root
360: privileges are needed to add or modify pf rules.</a>
361: </ul>
362:
363: <li>
1.385 jasper 364: <a name="47"></a>
365:
366: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
367: These are the OpenBSD 4.7 advisories -- all these problems are solved
368: in <a href=anoncvs.html>OpenBSD current</a> and the
369: <a href=stable.html>patch branch</a>.
370:
371: <p>
372: <ul>
1.387 miod 373: <li><a href="errata47.html#013_pf">February 16, 2011:
374: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
375: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
376: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
377: prefixes "10.1.1.1/30") are not affected.</a>
378: <li><a href="errata47.html#012_openssl">February 11, 2011:
379: An incorrectly formatted ClientHello handshake message could cause
380: OpenSSL to parse past the end of the message. An attacker could use
381: this flaw to trigger an invalid memory access, causing a crash of an
382: application linked to OpenSSL. As well, certain applications may expose
383: the contents of parsed OCSP extensions, specifically the OCSP nonce
384: extension.
385: <br>
386: Applications are only affected if they act as a server and call
387: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
388: that nothing in the base OS uses this. Apache httpd started using this
389: in v2.3.3; this is newer than the version in ports.</a>
390: <li><a href="errata47.html#009_pf">December 17, 2010:
391: Insufficent initialization of the pf rule structure in the ioctl
392: handler may allow userland to modify kernel memory. By default root
393: privileges are needed to add or modify pf rules.</a>
394: <li><a href="errata47.html#004_pfsync">April 23, 2010:
395: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 396: <li><a href="errata47.html#003_openssl">April 14, 2010:
397: In TLS connections, certain incorrectly formatted records can
398: cause an OpenSSL client or server to crash due to a read
1.392 tobias 399: attempt at NULL.</a>
1.385 jasper 400: </ul>
401:
402: <li>
1.378 jasper 403: <a name="46"></a>
404:
405: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
406: These are the OpenBSD 4.6 advisories -- all these problems are solved
407: in <a href=anoncvs.html>OpenBSD current</a> and the
408: <a href=stable.html>patch branch</a>.
409:
410: <p>
411: <ul>
1.385 jasper 412: <li><a href="errata46.html#010_openssl">April 14, 2010:
413: In TLS connections, certain incorrectly formatted records can
414: cause an OpenSSL client or server to crash due to a read
1.392 tobias 415: attempt at NULL.</a>
1.384 jasper 416: <li><a href="errata46.html#006_openssl">March 12, 2010:
417: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 418: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 419: <li><a href="errata46.html#004_openssl">November 26, 2009:
420: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 421: related to renegotiation.</a>
1.378 jasper 422: </ul>
1.382 tobias 423:
424: <li>
1.373 djm 425: <a name="45"></a>
426:
427: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
428: These are the OpenBSD 4.5 advisories -- all these problems are solved
429: in <a href=anoncvs.html>OpenBSD current</a> and the
430: <a href=stable.html>patch branch</a>.
431:
432: <p>
433: <ul>
1.385 jasper 434: <li><a href="errata45.html#016_openssl">April 14, 2010:
435: In TLS connections, certain incorrectly formatted records can
436: cause an OpenSSL client or server to crash due to a read
1.392 tobias 437: attempt at NULL.</a>
1.385 jasper 438: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 439: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 440: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 441: <li><a href="errata45.html#010_openssl">November 26, 2009:
442: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 443: related to renegotiation.</a>
1.373 djm 444: </ul>
445:
446: <li>
1.365 deraadt 447: <a name="44"></a>
448:
449: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
450: These are the OpenBSD 4.4 advisories -- all these problems are solved
451: in <a href=anoncvs.html>OpenBSD current</a> and the
452: <a href=stable.html>patch branch</a>.
453:
454: <p>
455: <ul>
1.372 millert 456: <li><a href="errata44.html#011_sudo">February 22, 2009:
457: sudo(8) may allow a user listed in sudoers to run a command
458: as a different user than their access rule specifies when a Unix
459: group is used in the RunAs portion of the rule.</a>
1.370 djm 460: <li><a href="errata44.html#008_bind">January 15, 2009:
461: named(8) suffered from a similar logic error that may allow
462: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 463: <li><a href="errata44.html#007_openssl">January 9, 2009:
464: OpenSSL suffered from some logic errors that allowed bypass
465: of DSA/ECDSA certificate validation.</a>
1.367 brad 466: <li><a href="errata44.html#001_ndp">November 2, 2008:
467: The Neighbor Discovery Protocol (ndp) did not correctly verify
468: neighbor solicitation requests maybe allowing a nearby attacker
469: to intercept traffic.</a>
1.365 deraadt 470: </ul>
471:
472: <li>
1.357 brad 473: <a name="43"></a>
474:
475: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
476: These are the OpenBSD 4.3 advisories -- all these problems are solved
477: in <a href=anoncvs.html>OpenBSD current</a> and the
478: <a href=stable.html>patch branch</a>.
479:
480: <p>
481: <ul>
1.372 millert 482: <li><a href="errata43.html#011_sudo">February 22, 2009:
483: sudo(8) may allow a user listed in sudoers to run a command
484: as a different user than their access rule specifies when a Unix
485: group is used in the RunAs portion of the rule.</a>
1.370 djm 486: <li><a href="errata43.html#008_bind">January 15, 2009:
487: named(8) suffered from a similar logic error that may allow
488: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 489: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 490: OpenSSL suffered from some logic errors that allowed bypass
491: of DSA/ECDSA certificate validation.</a>
1.382 tobias 492: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 493: The Neighbor Discovery Protocol (ndp) did not correctly verify
494: neighbor solicitation requests maybe allowing a nearby attacker
495: to intercept traffic.</a>
1.362 brad 496: <li><a href="errata43.html#004_bind">July 23, 2008:
497: A vulnerability has been found with BIND.</a>
1.361 brad 498: <li><a href="errata43.html#003_xorg">July 15, 2008:
499: Multiple vulnerabilities in X.Org.</a>
1.359 brad 500: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 501: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 502: <li><a href="errata43.html#001_openssh">March 30, 2008:
503: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 504: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 505: </ul>
506:
507: <li>
1.348 merdely 508: <a name="42"></a>
509: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
510: These are the OpenBSD 4.2 advisories -- all these problems are solved
511: in <a href=anoncvs.html>OpenBSD current</a> and the
512: <a href=stable.html>patch branch</a>.
513:
514: <p>
515: <ul>
1.364 tobias 516: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 517: The Neighbor Discovery Protocol (ndp) did not correctly verify
518: neighbor solicitation requests maybe allowing a nearby attacker
519: to intercept traffic.</a>
1.362 brad 520: <li><a href="errata42.html#013_bind">July 23, 2008:
521: A vulnerability has been found with BIND.</a>
1.361 brad 522: <li><a href="errata42.html#012_xorg2">July 15, 2008:
523: Multiple vulnerabilities in X.Org.</a>
1.359 brad 524: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 525: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 526: <li><a href="errata42.html#010_openssh">March 30, 2008:
527: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 528: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 529: <li><a href="errata42.html#009_ppp">March 7, 2008:
530: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 531: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
532: Multiple vulnerabilities in X.Org.</a>
1.351 okan 533: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
534: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 535: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 536: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 537: </ul>
538:
539: <li>
1.346 matthieu 540: <a name="41"></a>
541:
542: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
543: These are the OpenBSD 4.1 advisories -- all these problems are solved
544: in <a href=anoncvs.html>OpenBSD current</a> and the
545: <a href=stable.html>patch branch</a>.
546:
547: <p>
548: <ul>
1.359 brad 549: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 550: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 551: <li><a href="errata41.html#015_openssh">March 30, 2008:
552: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 553: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 554: <li><a href="errata41.html#014_ppp">March 7, 2008:
555: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 556: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
557: Multiple vulnerabilities in X.Org.</a>
558: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
559: The SSL_get_shared_ciphers() function in OpenSSL contains
560: an off-by-one overflow.</a>
1.350 deraadt 561: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 562: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 563: <li><a href="errata41.html#009_file">Jul 9, 2007:
564: Fix possible heap overflow in file(1).</a>
1.346 matthieu 565: <li><a href="errata41.html#005_route6">Apr 27, 2007:
566: IPv6 type 0 route headers can be used to mount a DoS attack
567: against hosts and networks.</a>
568: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
569: Multiple vulnerabilities in X.Org.</a>
570: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
571: Incorrect mbuf handling for ICMP6 packets.</a>
572: </ul>
573:
574: <li>
1.334 brad 575: <a name="40"></a>
576: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
577: These are the OpenBSD 4.0 advisories -- all these problems are solved
578: in <a href=anoncvs.html>OpenBSD current</a> and the
579: <a href=stable.html>patch branch</a>.
580:
581: <p>
582: <ul>
1.382 tobias 583: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
584: The SSL_get_shared_ciphers() function in OpenSSL contains an
585: off-by-one overflow.</a>
1.350 deraadt 586: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 587: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 588: <li><a href="errata40.html#015_file">Jul 9, 2007:
589: Fix possible heap overflow in file(1).</a>
1.343 deraadt 590: <li><a href="errata40.html#012_route6">Apr 23, 2007:
591: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 592: against hosts and networks.</a>
1.342 mbalmer 593: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
594: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 595: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
596: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 597: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 598: Insufficient validation in vga(4) may allow an attacker to gain
599: root privileges on some i386 systems.</a>
1.339 deraadt 600: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 601: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 602: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 603: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
604: found by Chris Evans.</a>
1.339 deraadt 605: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 606: Several problems have been found in OpenSSL.</a>
1.339 deraadt 607: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 608: httpd(8) does not sanitize the Expect header from an HTTP request
609: when it is reflected back in an error message, which might allow
610: cross-site scripting (XSS) style attacks.</a>
611: </ul>
612:
613: <li>
1.321 brad 614: <a name="39"></a>
615:
616: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
617: These are the OpenBSD 3.9 advisories -- all these problems are solved
618: in <a href=anoncvs.html>OpenBSD current</a> and the
619: <a href=stable.html>patch branch</a>.
620:
621: <p>
622: <ul>
1.343 deraadt 623: <li><a href="errata39.html#022_route6">Apr 23, 2007:
624: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 625: against hosts and networks.</a>
1.342 mbalmer 626: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
627: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 628: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
629: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 630: <li><a href="errata39.html#agp">Jan 3, 2007:
631: Insufficient validation in vga(4) may allow an attacker to gain
632: root privileges on some i386 systems.</a>
1.336 brad 633: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 634: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 635: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 636: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 637: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 638: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 639: found by Chris Evans.</a>
1.333 deraadt 640: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 641: Several problems have been found in OpenSSL.</a>
1.333 deraadt 642: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 643: httpd(8) does not sanitize the Expect header from an HTTP request
644: when it is reflected back in an error message, which might allow
645: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 646: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 647: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
648: possible for an attacker to construct an invalid signature which
649: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 650: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 651: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 652: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 653: Due to the failure to correctly validate LCP configuration option
654: lengths, it is possible for an attacker to send LCP packets via an
655: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 656: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 657: A problem in isakmpd(8) caused IPsec to run partly without replay
658: protection.</a>
1.333 deraadt 659: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 660: It is possible to cause the kernel to panic when more than the default
661: number of sempahores have been allocated.</a>
1.333 deraadt 662: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 663: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
664: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
665: option.</a>
1.333 deraadt 666: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 667: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 668: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 669: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
670: overflow.</a>
1.333 deraadt 671: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 672: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 673: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 674: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 675: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 676: A race condition has been reported to exist in the handling by sendmail
677: of asynchronous signals.</a>
678: </ul>
679:
680: <li>
1.318 deraadt 681: <a name="38"></a>
682:
683: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
684: These are the OpenBSD 3.8 advisories -- all these problems are solved
685: in <a href=anoncvs.html>OpenBSD current</a> and the
686: <a href=stable.html>patch branch</a>.
687:
688: <p>
689: <ul>
1.332 brad 690: <li><a href="errata38.html#ssh2">Oct 12, 2006:
691: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 692: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 693: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 694: found by Chris Evans.</a>
695: <li><a href="errata38.html#openssl2">Oct 7, 2006:
696: Several problems have been found in OpenSSL.</a>
697: <li><a href="errata38.html#httpd2">Oct 7, 2006:
698: httpd(8) does not sanitize the Expect header from an HTTP request
699: when it is reflected back in an error message, which might allow
700: cross-site scripting (XSS) style attacks.</a>
1.329 brad 701: <li><a href="errata38.html#openssl">Sep 8, 2006:
702: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
703: possible for an attacker to construct an invalid signature which
704: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 705: <li><a href="errata38.html#bind">Sep 8, 2006:
706: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 707: <li><a href="errata38.html#sppp">Sep 2, 2006:
708: Due to the failure to correctly validate LCP configuration option
709: lengths, it is possible for an attacker to send LCP packets via an
710: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 711: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
712: A problem in isakmpd(8) caused IPsec to run partly without replay
713: protection.</a>
714: <li><a href="errata38.html#sem">Aug 25, 2006:
715: It is possible to cause the kernel to panic when more than the default
716: number of sempahores have been allocated.</a>
717: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
718: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
719: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
720: option.</a>
721: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
722: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 723: <li><a href="errata38.html#httpd">Jul 30, 2006:
724: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
725: overflow.</a>
1.324 brad 726: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
727: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 728: <li><a href="errata38.html#xorg">May 2, 2006:
729: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 730: <li><a href="errata38.html#sendmail">Mar 25, 2006:
731: A race condition has been reported to exist in the handling by sendmail
732: of asynchronous signals.</a>
733: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 734: Josh Bressers has reported a weakness in OpenSSH caused due to the
735: insecure use of the system(3) function in scp(1) when performing copy
736: operations using filenames that are supplied by the user from the
737: command line.</a>
1.321 brad 738: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 739: Do not allow users to trick suid programs into re-opening files via
740: /dev/fd.</a>
1.321 brad 741: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 742: A buffer overflow has been found in the Perl interpreter with the
743: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 744: </ul>
745:
746: <li>
1.312 david 747: <a name="37"></a>
748:
749: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
750: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 751: in <a href="anoncvs.html">OpenBSD current</a>. The
752: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
753: you should update your machine.
1.312 david 754:
755: <p>
756: <ul>
1.322 brad 757: <li><a href="errata37.html#xorg">May 2, 2006:
758: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 759: <li><a href="errata37.html#sendmail">Mar 25, 2006:
760: A race condition has been reported to exist in the handling by sendmail
761: of asynchronous signals.</a>
1.320 brad 762: <li><a href="errata37.html#ssh">Feb 12, 2006:
763: Josh Bressers has reported a weakness in OpenSSH caused due to the
764: insecure use of the system(3) function in scp(1) when performing copy
765: operations using filenames that are supplied by the user from the
766: command line.</a>
1.319 brad 767: <li><a href="errata37.html#fd">Jan 5, 2006:
768: Do not allow users to trick suid programs into re-opening files via
769: /dev/fd.</a>
770: <li><a href="errata37.html#perl">Jan 5, 2006:
771: A buffer overflow has been found in the Perl interpreter with the
772: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 773: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 774: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 775: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 776: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 777: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 778: Fix a race condition in sudo(8) that could allow a user
1.315 millert 779: to run arbitrary commands.</a>
1.318 deraadt 780: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 781: Fix a buffer overflow, memory leaks, and NULL pointer
782: dereference in cvs(1).</a>
1.312 david 783: </ul>
784:
785: <li>
1.301 miod 786: <a name="36"></a>
787:
788: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
789: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 790: in <a href="anoncvs.html">OpenBSD current</a>. The
791: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
792: you should update your machine.
1.301 miod 793:
794: <p>
1.302 markus 795: <ul>
1.317 millert 796: <li><a href="errata36.html#libz2">Jul 21, 2005:
797: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 798: <li><a href="errata36.html#libz">Jul 6, 2005:
799: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 800: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 801: Fix a race condition in sudo(8) that could allow a user
1.315 millert 802: to run arbitrary commands.</a>
1.311 deraadt 803: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 804: Fix a buffer overflow, memory leaks, and NULL pointer
805: dereference in cvs(1).</a>
1.311 deraadt 806: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 807: Due to buffer overflows in telnet(1), a malicious
808: server or man-in-the-middle attack could allow
809: execution of arbitrary code with the privileges of
810: the user invoking telnet(1).</a>
1.311 deraadt 811: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 812: More stringent checking should be done in the copy(9)
813: functions to prevent their misuse.</a>
1.311 deraadt 814: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 815: More stringent checking should be done in the copy(9)
816: functions to prevent their misuse.</a>
1.311 deraadt 817: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 818: httpd(8)'s mod_include module fails to properly validate
819: the length of user supplied tag strings prior to copying
1.305 brad 820: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 821: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 822: On systems running isakmpd(8) it is possible for a local
823: user to cause kernel memory corruption and system panic by
1.303 markus 824: setting ipsec(4) credentials on a socket.</a>
1.302 markus 825: </ul>
1.301 miod 826:
827: <li>
1.288 matthieu 828: <a name="35"></a>
1.279 deraadt 829:
1.294 david 830: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 831: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 832: in <a href="anoncvs.html">OpenBSD current</a>. The
833: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
834: you should update your machine.
1.279 deraadt 835:
836: <p>
837: <ul>
1.310 brad 838: <li><a href="errata35.html#cvs4">Apr 28, 2005:
839: Fix a buffer overflow, memory leaks, and NULL pointer
840: dereference in cvs(1).</a>
1.309 brad 841: <li><a href="errata35.html#telnet">Mar 30, 2005:
842: Due to buffer overflows in telnet(1), a malicious
843: server or man-in-the-middle attack could allow
844: execution of arbitrary code with the privileges of
845: the user invoking telnet(1).</a>
1.308 brad 846: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 847: More stringent checking should be done in the copy(9)
848: functions to prevent their misuse.</a>
1.306 brad 849: <li><a href="errata35.html#locore">Feb 28, 2005:
850: More stringent checking should be done in the copy(9)
851: functions to prevent their misuse.</a>
1.304 brad 852: <li><a href="errata35.html#httpd3">Jan 12, 2005:
853: httpd(8)'s mod_include module fails to properly validate
854: the length of user supplied tag strings prior to copying
1.305 brad 855: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 856: <li><a href="errata35.html#pfkey">Dec 14, 2004:
857: On systems running isakmpd(8) it is possible for a local
858: user to cause kernel memory corruption and system panic by
1.303 markus 859: setting ipsec(4) credentials on a socket.</a>
1.301 miod 860: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 861: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 862: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 863: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 864: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 865: httpd(8)'s mod_rewrite module can be made to write one zero byte in
866: an arbitrary memory position outside of a char array, causing a DoS
867: or possibly buffer overflows.</a>
1.301 miod 868: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 869: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 870: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 871: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 872: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 873: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 874: Multiple remote vulnerabilities have been found in the cvs(1)
875: server which can be used by CVS clients to crash or execute
1.293 brad 876: arbitrary code on the server.</a>
1.301 miod 877: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 878: kdc(8) performs inadequate checking of request fields, leading
879: to the possibility of principal impersonation from other
880: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 881: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 882: xdm(1) ignores the requestPort resource and creates a
1.293 brad 883: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 884: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 885: A buffer overflow in the cvs(1) server has been found,
886: which can be used by CVS clients to execute arbitrary code on
1.293 brad 887: the server.</a>
1.301 miod 888: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 889: Integer overflow problems were found in procfs, allowing
1.293 brad 890: reading of arbitrary kernel memory.</a>
1.301 miod 891: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 892: Pathname validation problems have been found in cvs(1),
893: allowing clients and servers access to files outside the
1.293 brad 894: repository or local CVS tree.</a>
1.279 deraadt 895: </ul>
896:
897: <p>
898: <li>
1.288 matthieu 899: <a name="34"></a>
1.261 david 900:
1.294 david 901: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 902: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 903: in <a href="anoncvs.html">OpenBSD current</a>. The
904: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
905: you should update your machine.
1.261 david 906: <p>
907: <ul>
1.302 markus 908: <li><a href="errata34.html#pfkey">Dec 14, 2004:
909: On systems running isakmpd(8) it is possible for a local
910: user to cause kernel memory corruption and system panic by
1.303 markus 911: setting ipsec(4) credentials on a socket.</a>
1.298 brad 912: <li><a href="errata34.html#xpm">Sep 16, 2004:
913: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 914: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
915: httpd(8)'s mod_rewrite module can be made to write one zero byte in
916: an arbitrary memory position outside of a char array, causing a DoS
917: or possibly buffer overflows.</a>
1.294 david 918: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 919: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 920: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 921: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 922: an attacker can delete IPsec tunnels at will.</a>
1.294 david 923: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 924: Multiple remote vulnerabilities have been found in the cvs(1)
925: server which can be used by CVS clients to crash or execute
1.293 brad 926: arbitrary code on the server.</a>
1.294 david 927: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 928: kdc(8) performs inadequate checking of request fields, leading
929: to the possibility of principal impersonation from other
930: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 931: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 932: A buffer overflow in the cvs(1) server has been found,
933: which can be used by CVS clients to execute arbitrary code on
934: the server.</a>
1.294 david 935: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 936: Integer overflow problems were found in procfs, allowing
937: reading of arbitrary kernel memory.</a>
1.294 david 938: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 939: Pathname validation problems have been found in cvs(1),
940: allowing clients and servers access to files outside the
941: repository or local CVS tree.</a>
1.294 david 942: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 943: A missing check for a NULL-pointer dereference may allow a
1.281 otto 944: remote attacker to crash applications using OpenSSL.</a>
1.294 david 945: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 946: Defects in the payload validation and processing functions of
947: isakmpd have been discovered. An attacker could send malformed
948: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 949: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 950: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
951: access module, using IP addresses without a netmask on big endian
952: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 953: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 954: An IPv6 MTU handling problem exists that could be used by an
955: attacker to cause a denial of service attack.</a>
1.294 david 956: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 957: A reference counting bug in shmat(2) could be used to write to
958: kernel memory under certain circumstances.</a>
1.294 david 959: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 960: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 961: by Thomas Walpuski.</a>
1.294 david 962: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 963: It may be possible for a local user to overrun the stack in
964: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 965: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 966: The use of certain ASN.1 encodings or malformed public keys may
967: allow an attacker to mount a denial of service attack against
968: applications linked with ssl(3).</a>
1.261 david 969: </ul>
970:
971: <li>
1.288 matthieu 972: <a name="33"></a>
1.246 deraadt 973:
1.294 david 974: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 975: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 976: in <a href="anoncvs.html">OpenBSD current</a>. The
977: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 978: you should update your machine.
1.246 deraadt 979: <p>
980: <ul>
1.294 david 981: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 982: Pathname validation problems have been found in cvs(1),
983: allowing clients and servers access to files outside the
984: repository or local CVS tree.</a>
1.294 david 985: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 986: A missing check for a NULL-pointer dereference may allow a
1.281 otto 987: remote attacker to crash applications using OpenSSL.</a>
1.294 david 988: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 989: Defects in the payload validation and processing functions of
990: isakmpd have been discovered. An attacker could send malformed
991: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 992: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 993: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
994: access module, using IP addresses without a netmask on big endian
995: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 996: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 997: An IPv6 MTU handling problem exists that could be used by an
998: attacker to cause a denial of service attack.</a>
1.294 david 999: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 1000: A reference counting bug in shmat(2) could be used to write to
1001: kernel memory under certain circumstances.</a>
1.294 david 1002: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 1003: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1004: by Thomas Walpuski.</a>
1.294 david 1005: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 1006: It may be possible for a local user to execute arbitrary code
1007: resulting in escalation of privileges due to a stack overrun
1008: in compat_ibcs2(8).</a>
1.294 david 1009: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 1010: The use of certain ASN.1 encodings or malformed public keys may
1011: allow an attacker to mount a denial of service attack against
1012: applications linked with ssl(3).</a>
1.294 david 1013: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 1014: Access of freed memory in pf(4) could be used to
1.260 margarid 1015: remotely panic a machine using scrub rules.</a>
1.294 david 1016: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 1017: A buffer overflow in the address parsing in
1018: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1019: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 1020: OpenSSH versions prior to 3.7 contains a buffer management error
1021: that is potentially exploitable.</a>
1.294 david 1022: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 1023: Root may be able to reduce the security level by taking advantage of
1024: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 1025: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 1026: An improper bounds check in the kernel may allow a local user
1027: to panic the kernel.</a>
1.294 david 1028: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1029: An off-by-one error exists in the C library function realpath(3)
1030: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1031: </ul>
1032:
1.265 miod 1033:
1.247 david 1034: <p>
1.246 deraadt 1035: <li>
1.288 matthieu 1036: <a name="32"></a>
1.224 deraadt 1037:
1.294 david 1038: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 1039: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 1040: in <a href="anoncvs.html">OpenBSD current</a>. The
1041: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 1042: you should update your machine.
1.224 deraadt 1043: <p>
1044: <ul>
1.294 david 1045: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1046: The use of certain ASN.1 encodings or malformed public keys may
1047: allow an attacker to mount a denial of service attack against
1048: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1049: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 1050: Access of freed memory in pf(4) could be used to
1.260 margarid 1051: remotely panic a machine using scrub rules.</a>
1.294 david 1052: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1053: A buffer overflow in the address parsing in
1054: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1055: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1056: OpenSSH versions prior to 3.7 contains a buffer management error
1057: that is potentially exploitable.</a>
1.294 david 1058: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1059: Fix for a potential security issue in
1060: sendmail(8) with respect to DNS maps.</a>
1.294 david 1061: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1062: An off-by-one error exists in the C library function realpath(3)
1063: may allow an attacker to gain escalated privileges.</a>
1.294 david 1064: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1065: A buffer overflow in the address parsing in
1066: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1067: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1068: A cryptographic weaknesses in the Kerberos v4 protocol can be
1069: exploited on Kerberos v5 as well.</a>
1.294 david 1070: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1071: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1072: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1073: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1074: Various SSL and TLS operations in OpenSSL are vulnerable to
1075: timing attacks.</a>
1.294 david 1076: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1077: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1078: privileges to user daemon.</a>
1.294 david 1079: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1080: A buffer overflow in the envelope comments processing in
1081: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1082: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1083: httpd(8) leaks file inode numbers via ETag header as well as
1084: child PIDs in multipart MIME boundary generation. This could
1085: lead, for example, to NFS exploitation because it uses inode
1086: numbers as part of the file handle.</a>
1.294 david 1087: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1088: In ssl(8) an information leak can occur via timing by performing
1089: a MAC computation even if incorrect block cipher padding has
1090: been found, this is a countermeasure. Also, check for negative
1091: sizes, in allocation routines.</a>
1.294 david 1092: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1093: A double free exists in cvs(1) that could lead to privilege
1094: escalation for cvs configurations where the cvs command is
1.233 margarid 1095: run as a privileged user.</a>
1.294 david 1096: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1097: A buffer overflow exists in named(8) that could lead to a
1098: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1099: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1100: A logic error in the pool kernel memory allocator could cause
1101: memory corruption in low-memory situations, causing the system
1102: to crash.</a>
1.294 david 1103: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1104: An attacker can bypass smrsh(8)'s restrictions and execute
1105: arbitrary commands with the privileges of his own account.</a>
1.294 david 1106: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1107: Network bridges running pf with scrubbing enabled could cause
1108: mbuf corruption, causing the system to crash.</a>
1.294 david 1109: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1110: A buffer overflow can occur in the kadmind(8) daemon, leading
1111: to possible remote crash or exploit.</a>
1.224 deraadt 1112: </ul>
1113:
1.227 miod 1114: <p>
1115: <li>
1.288 matthieu 1116: <a name="31"></a>
1.203 deraadt 1117:
1.294 david 1118: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 1119: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 1120: in <a href="anoncvs.html">OpenBSD current</a>. The
1121: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1122: you should update your machine.
1.203 deraadt 1123:
1124: <p>
1125: <ul>
1.294 david 1126: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1127: A buffer overflow in the address parsing in
1128: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1129: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1130: A cryptographic weaknesses in the Kerberos v4 protocol can be
1131: exploited on Kerberos v5 as well.</a>
1.294 david 1132: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1133: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1134: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1135: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1136: Various SSL and TLS operations in OpenSSL are vulnerable to
1137: timing attacks.</a>
1.294 david 1138: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1139: A buffer overflow in lprm(1) may allow an attacker to gain
1140: root privileges.</a>
1.294 david 1141: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1142: A buffer overflow in the envelope comments processing in
1143: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1144: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1145: In ssl(8) an information leak can occur via timing by performing
1146: a MAC computation even if incorrect block cipher padding has
1147: been found, this is a countermeasure. Also, check for negative
1148: sizes, in allocation routines.</a>
1.294 david 1149: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1150: A double free exists in cvs(1) that could lead to privilege
1151: escalation for cvs configurations where the cvs command is
1.392 tobias 1152: run as a privileged user.</a>
1.294 david 1153: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1154: A buffer overflow exists in named(8) that could lead to a
1155: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1156: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1157: Incorrect argument checking in the getitimer(2) system call
1158: may allow an attacker to crash the system.</a>
1.294 david 1159: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1160: An attacker can bypass smrsh(8)'s restrictions and execute
1161: arbitrary commands with the privileges of his own account.</a>
1.294 david 1162: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1163: A buffer overflow can occur in the kadmind(8) daemon, leading
1164: to possible remote crash or exploit.</a>
1.294 david 1165: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1166: Incorrect argument checking in the setitimer(2) system call
1167: may allow an attacker to write to kernel memory.</a>
1.294 david 1168: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1169: An insufficient boundary check in the select system call
1.220 miod 1170: allows an attacker to overwrite kernel memory and execute arbitrary code
1171: in kernel context.</a>
1.294 david 1172: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1173: Several remote buffer overflows can occur in the SSL2 server and SSL3
1174: client of the ssl(8) library, as in the ASN.1 parser code in the
1175: crypto(3) library, all of them being potentially remotely
1176: exploitable.</a>
1.294 david 1177: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1178: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1179: possible remote crash.</a>
1.294 david 1180: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1181: A race condition exists in the pppd(8) daemon which may cause it to
1182: alter the file permissions of an arbitrary file.</a>
1.294 david 1183: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1184: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1185: crash.</a>
1.294 david 1186: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1187: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1188: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1189: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1190: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1191: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1192: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1193: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1194: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1195: input validation error that can result in an integer overflow and
1196: privilege escalation.</a>
1.294 david 1197: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1198: A buffer overflow can occur during the interpretation of chunked
1199: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1200: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1201: Under certain conditions, on systems using YP with netgroups
1202: in the password database, it is possible that sshd(8) does
1203: ACL checks for the requested user name but uses the password
1204: database entry of a different user for authentication. This
1205: means that denied users might authenticate successfully
1206: while permitted users could be locked out.</a>
1.294 david 1207: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1208: A race condition exists that could defeat the kernel's
1209: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1210: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1211: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1212: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1213: A local user can gain super-user privileges due to a buffer
1214: overflow in sshd(8) if AFS has been configured on the system
1215: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1216: in the sshd_config file.</a>
1.203 deraadt 1217: </ul>
1218:
1.235 miod 1219: <p>
1.203 deraadt 1220: <li>
1.288 matthieu 1221: <a name="30"></a>
1.187 deraadt 1222:
1.294 david 1223: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1224: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1225: in <a href="anoncvs.html">OpenBSD current</a>. The
1226: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1227: you should update your machine.
1.187 deraadt 1228:
1229: <p>
1230: <ul>
1.294 david 1231: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1232: A buffer overflow exists in named(8) that could lead to a
1233: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1234: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1235: Incorrect argument checking in the getitimer(2) system call
1236: may allow an attacker to crash the system.</a>
1.294 david 1237: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1238: An attacker can bypass smrsh(8)'s restrictions and execute
1239: arbitrary commands with the privileges of his own account.</a>
1.294 david 1240: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1241: A buffer overflow can occur in the kadmind(8) daemon, leading
1242: to possible remote crash or exploit.</a>
1.294 david 1243: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1244: Incorrect argument checking in the setitimer(2) system call
1245: may allow an attacker to write to kernel memory.</a>
1.294 david 1246: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1247: An insufficient boundary check in the select and poll system calls
1248: allows an attacker to overwrite kernel memory and execute arbitrary code
1249: in kernel context.</a>
1.294 david 1250: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1251: Several remote buffer overflows can occur in the SSL2 server and SSL3
1252: client of the ssl(8) library, as in the ASN.1 parser code in the
1253: crypto(3) library, all of them being potentially remotely
1254: exploitable.</a>
1.294 david 1255: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1256: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1257: possible remote crash.</a>
1.294 david 1258: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1259: A race condition exists in the pppd(8) daemon which may cause it to
1260: alter the file permissions of an arbitrary file.</a>
1.294 david 1261: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1262: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1263: crash.</a>
1.294 david 1264: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1265: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1266: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1267: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1268: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1269: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1270: input validation error that can result in an integer overflow and
1271: privilege escalation.</a>
1.294 david 1272: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1273: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1274: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1275: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1276: A buffer overflow can occur during the interpretation of chunked
1277: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1278: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1279: A race condition exists that could defeat the kernel's
1280: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1281: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1282: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1283: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1284: A local user can gain super-user privileges due to a buffer
1285: overflow in sshd(8) if AFS has been configured on the system
1286: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1287: in the sshd_config file.</a>
1.294 david 1288: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1289: The mail(1) was interpreting tilde escapes even when invoked
1290: in non-interactive mode. As mail(1) is called as root from cron,
1291: this can lead to a local root compromise.</a>
1.294 david 1292: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1293: Under certain conditions, on systems using YP with netgroups in
1294: the password database, it is possible for the rexecd(8) and rshd(8)
1295: daemons to execute a shell from a password database entry for a
1296: different user. Similarly, atrun(8) may change to the wrong
1297: home directory when running jobs.</a>
1.294 david 1298: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1299: A potential double free() exists in the zlib library;
1300: this is not exploitable on OpenBSD.
1301: The kernel also contains a copy of zlib; it is not
1302: currently known if the kernel zlib is exploitable.</a>
1.294 david 1303: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1304: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1305: may allow a local user to gain super-user privileges.</a>
1.294 david 1306: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1307: A race condition between the ptrace(2) and execve(2) system calls
1308: allows an attacker to modify the memory contents of suid/sgid
1309: processes which could lead to compromise of the super-user account.</a>
1.294 david 1310: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1311: There is a security hole in sudo(8) that can be exploited
1312: when the Postfix sendmail replacement is installed that may
1313: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1314: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1315: An attacker can trick a machine running the lpd daemon into
1316: creating new files in the root directory from a machine with
1317: remote line printer access.</a>
1.294 david 1318: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1319: The vi.recover script can be abused in such a way as
1320: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1321: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1322: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1323: resulting in a crash.</a>
1.294 david 1324: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1325: A security hole that may allow an attacker to partially authenticate
1326: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1327: </ul>
1328:
1329: <p>
1330: <li>
1.288 matthieu 1331: <a name="29"></a>
1.173 deraadt 1332:
1.294 david 1333: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1334: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1335: in <a href="anoncvs.html">OpenBSD current</a>. The
1336: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1337: you should update your machine.
1338:
1.173 deraadt 1339:
1340: <p>
1341: <ul>
1.294 david 1342: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1343: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1344: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1345: A race condition exists that could defeat the kernel's
1346: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1347: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1348: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1349: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1350: A local user can gain super-user privileges due to a buffer
1351: overflow in sshd(8) if AFS has been configured on the system
1352: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1353: in the sshd_config file.</a>
1.294 david 1354: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1355: The mail(1) was interpreting tilde escapes even when invoked
1356: in non-interactive mode. As mail(1) is called as root from cron,
1357: this can lead to a local root compromise.</a>
1.294 david 1358: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1359: A potential double free() exists in the zlib library;
1360: this is not exploitable on OpenBSD.
1361: The kernel also contains a copy of zlib; it is not
1362: currently known if the kernel zlib is exploitable.</a>
1.294 david 1363: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1364: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1365: may allow a local user to gain super-user privileges.</a>
1.294 david 1366: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1367: A race condition between the ptrace(2) and execve(2) system calls
1368: allows an attacker to modify the memory contents of suid/sgid
1369: processes which could lead to compromise of the super-user account.</a>
1.294 david 1370: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1371: There is a security hole in sudo(8) that can be exploited
1372: when the Postfix sendmail replacement is installed that may
1373: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1374: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1375: An attacker can trick a machine running the lpd daemon into
1376: creating new files in the root directory from a machine with
1377: remote line printer access.</a>
1.294 david 1378: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1379: The vi.recover script can be abused in such a way as
1380: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1381: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1382: A security hole exists in uuxqt(8) that may allow an
1383: attacker to gain root privileges.</a>
1.294 david 1384: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1385: A security hole exists in lpd(8) that may allow an
1386: attacker to gain root privileges if lpd is running.</a>
1.294 david 1387: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1388: A security hole exists in sendmail(8) that may allow an
1389: attacker on the local host to gain root privileges.</a>
1.294 david 1390: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1391: A kernel buffer overflow in the NFS code can be used to execute
1392: arbitrary code by users with mount privileges (only root by
1.181 millert 1393: default).</a>
1.294 david 1394: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1395: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1396: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1397: sshd(8) allows users to delete arbitrary files named "cookies"
1398: if X11 forwarding is enabled. X11 forwarding is disabled
1399: by default.</a>
1.294 david 1400: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1401: Programs using the fts routines can be tricked into changing
1402: into the wrong directory.</a>
1.294 david 1403: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1404: Sendmail signal handlers contain unsafe code,
1405: leading to numerous race conditions.</a>
1.173 deraadt 1406: </ul>
1407:
1408: <p>
1409: <li>
1.288 matthieu 1410: <a name="28"></a>
1.152 deraadt 1411:
1.294 david 1412: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1413: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1414: in <a href="anoncvs.html">OpenBSD current</a>. The
1415: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1416: you should update your machine.
1417:
1.152 deraadt 1418:
1419: <p>
1420: <ul>
1.294 david 1421: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1422: A security hole exists in uuxqt(8) that may allow an
1423: attacker to gain root privileges.</a>
1.294 david 1424: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1425: A security hole exists in lpd(8) that may allow an
1426: attacker to gain root privileges if lpd is running.</a>
1.294 david 1427: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1428: A security hole exists in sendmail(8) that may allow an
1429: attacker on the local host to gain root privileges.</a>
1.294 david 1430: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1431: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1432: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1433: Programs using the fts routines can be tricked into changing
1434: into the wrong directory.</a>
1.294 david 1435: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1436: Sendmail signal handlers contain unsafe code,
1437: leading to numerous race conditions.</a>
1.294 david 1438: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1439: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1440: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1441: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1442: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1443: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1444: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1445: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1446: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1447: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1448: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1449: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1450: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1451: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1452: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1453: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1454: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1455: rnd(4) did not use all of its input when written to.</a>
1.294 david 1456: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1457: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1458: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1459: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1460: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1461: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1462: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1463: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1464: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1465: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1466: </ul>
1467:
1468: <p>
1469: <li>
1.288 matthieu 1470: <a name="27"></a>
1.124 deraadt 1471:
1.294 david 1472: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1473: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1474: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1475: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1476:
1477: <p>
1478: <ul>
1.294 david 1479: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1480: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1481: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1482: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1483: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1484: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1485: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1486: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1487: (patch included)</a>
1.294 david 1488: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1489: X11 libraries have 2 potential overflows in xtrans code.
1490: (patch included)</a>
1.294 david 1491: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1492: Apache mod_rewrite and mod_vhost_alias modules could expose files
1493: on the server in certain configurations if used.
1494: (patch included)</a>
1.294 david 1495: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1496: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1497: TERMPATH and TERMCAP environment variables as it should.
1498: (patch included)</a>
1.294 david 1499: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1500: There are printf-style format string bugs in several privileged
1501: programs. (patch included)</a>
1.294 david 1502: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1503: libcurses honored terminal descriptions in the $HOME/.terminfo
1504: directory as well as in the TERMCAP environment variable for
1505: setuid and setgid applications.
1.146 deraadt 1506: (patch included)</a>
1.294 david 1507: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1508: A format string vulnerability exists in talkd(8).
1509: (patch included)</a>
1.294 david 1510: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1511: A format string vulnerability exists in the pw_error() function of the
1512: libutil library, yielding localhost root through chpass(1).
1513: (patch included)</a>
1.294 david 1514: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1515: Bad ESP/AH packets could cause a crash under certain conditions.
1516: (patch included)</a>
1.294 david 1517: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1518: A format string vulnerability (localhost root) exists in xlock(1).
1519: (patch included)</a>
1.294 david 1520: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1521: Various bugs found in X11 libraries have various side effects, almost
1522: completely denial of service in OpenBSD.
1523: (patch included)</a>
1.294 david 1524: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1525: Just like pretty much all the other unix ftp daemons
1526: on the planet, ftpd had a remote root hole in it.
1527: Luckily, ftpd was not enabled by default.
1.137 deraadt 1528: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1529: (patch included)</a>
1.294 david 1530: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1531: Mopd, very rarely used, contained some buffer overflows.
1532: (patch included)</a>
1.294 david 1533: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1534: libedit would check for a <b>.editrc</b> file in the current
1535: directory. Not known to be a real security issue, but a patch
1536: is available anyways.
1537: (patch included)</a>
1.294 david 1538: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1539: A serious bug in dhclient(8) could allow strings from a
1540: malicious dhcp server to be executed in the shell as root.
1541: (patch included)</a>
1.294 david 1542: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1543: A serious bug in isakmpd(8) policy handling wherein
1544: policy verification could be completely bypassed in isakmpd.
1545: (patch included)</a>
1.294 david 1546: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1547: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1548: should not be used, and results in security problems on
1549: other operating systems.</a>
1.294 david 1550: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1551: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1552: (patch included)</a>
1.294 david 1553: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1554: Improper use of ipf <i>keep-state</i> rules can result
1555: in firewall rules being bypassed. (patch included)</a>
1556:
1.124 deraadt 1557: </ul>
1558:
1559: <p>
1560: <li>
1.288 matthieu 1561: <a name="26"></a>
1.119 deraadt 1562:
1.294 david 1563: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1564: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1565: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1566: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1567:
1568: <p>
1569: <ul>
1.294 david 1570: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1571: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1572: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1573: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1574: Improper use of ipf <i>keep-state</i> rules can result
1575: in firewall rules being bypassed. (patch included)</a>
1.294 david 1576: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1577: xlockmore has a bug which a localhost attacker can use to gain
1578: access to the encrypted root password hash (which is normally
1.245 miod 1579: encoded using blowfish</a> (see
1.294 david 1580: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1581: crypt(3)</a>)
1.245 miod 1582: (patch included).
1.294 david 1583: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1584: Systems running with procfs enabled and mounted are
1585: vulnerable to a very tricky exploit. procfs is not
1586: mounted by default.
1587: (patch included).</a>
1.294 david 1588: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1589: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1590: thus exposing the system to a race where the aliases file
1591: did not exist.
1.119 deraadt 1592: (patch included).</a>
1.294 david 1593: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1594: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1595: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1596: A buffer overflow in the RSAREF code included in the
1597: USA version of libssl, is possibly exploitable in
1598: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1599: (patch included).<br></a>
1600: <strong>Update:</strong> Turns out that this was not exploitable
1601: in any of the software included in OpenBSD 2.6.
1.294 david 1602: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1603: Any user could change interface media configurations, resulting in
1604: a localhost denial of service attack.
1.121 deraadt 1605: (patch included).</a>
1.119 deraadt 1606: </ul>
1607:
1608: <p>
1609: <li>
1.288 matthieu 1610: <a name="25"></a>
1.106 deraadt 1611:
1.294 david 1612: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1613: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1614: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1615: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1616:
1.96 deraadt 1617: <p>
1.104 deraadt 1618: <ul>
1.294 david 1619: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1620: In cron(8), make sure argv[] is NULL terminated in the
1621: fake popen() and run sendmail as the user, not as root.
1622: (patch included).</a>
1.294 david 1623: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1624: filesystems had an overrun in their handling of uio_offset
1625: in their readdir() routines. (These filesystems are not
1626: enabled by default). (patch included).</a>
1.294 david 1627: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1628: when we execve() a new process. (patch included).</a>
1.294 david 1629: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1630: been handled by IPsec may be transmitted as cleartext.
1631: PF_KEY SA expirations may leak kernel resources.
1632: (patch included).</a>
1.294 david 1633: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1634: motd re-writing and change the find(1) to use -execdir
1635: (patch included).</a>
1.294 david 1636: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1637: users to chflags(2) or fchflags(2) on character or block devices
1638: which they may currently be the owner of (patch included).</a>
1.294 david 1639: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1640: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1641: </ul>
1642:
1.106 deraadt 1643: <p>
1644: <li>
1.288 matthieu 1645: <a name="24"></a>
1.235 miod 1646:
1.294 david 1647: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1648: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1649: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1650: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1651:
1.96 deraadt 1652: <p>
1.75 deraadt 1653: <ul>
1.294 david 1654: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1655: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1656: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1657: another kernel crash case caused by the <strong>crashme</strong>
1658: program (patch included).</a>
1.294 david 1659: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1660: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1661: (patch included).</a>
1.294 david 1662: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1663: existed in ping(8). (patch included).</a>
1.294 david 1664: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1665: the ipq, which could permit an attacker to cause a crash.
1666: (patch included).</a>
1.294 david 1667: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1668: kernel between accept(2) and select(2) could permit an attacker
1669: to hang sockets from remote.
1670: (patch included).</a>
1.294 david 1671: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1672: bog the machine excessively and cause problems.
1673: (patch included).</a>
1.294 david 1674: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1675: DDB interacted to possibly cause a crash.
1676: (patch included).</a>
1.294 david 1677: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1678: (patch included).</a>
1.294 david 1679: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1680: problem in bootpd(8). (patch included).</a>
1.294 david 1681: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1682: exploitable problem relating to environment variables in termcap
1683: and curses. (patch included).</a>
1.294 david 1684: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1685: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1686: </ul>
1687:
1.106 deraadt 1688: <p>
1689: <li>
1.288 matthieu 1690: <a name="23"></a>
1.235 miod 1691:
1.294 david 1692: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1693: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1694: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1695: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1696:
1.96 deraadt 1697: <p>
1.53 matthieu 1698: <ul>
1.294 david 1699: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1700: problem in bootpd(8). (patch included).</a>
1.294 david 1701: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1702: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1703: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1704: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1705: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1706: chpass(1) has a file descriptor leak which allows an
1707: attacker to modify /etc/master.passwd.</a>
1.294 david 1708: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1709: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1710: should not be executed with fd slots 0, 1, or 2 free.
1711: (patch included).</a>
1.294 david 1712: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1713: libraries (patches included).</a>
1.294 david 1714: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1715: processes too permissive (4th revision patch included).</a>
1.294 david 1716: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1717: of immutable and append-only file flags. (patch included).</a>
1.294 david 1718: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1719: if IPSEC is enabled (patch included).</a>
1.294 david 1720: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1721: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1722: </ul>
1.9 deraadt 1723:
1.106 deraadt 1724: <p>
1725: <li>
1.288 matthieu 1726: <a name="22"></a>
1.235 miod 1727:
1.294 david 1728: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1729: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1730: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1731: still exist in other operating systems. (The supplied patches are for
1732: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1733:
1.96 deraadt 1734: <p>
1.9 deraadt 1735: <ul>
1.294 david 1736: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1737: packets if IPSEC is enabled (patch included).</a>
1.294 david 1738: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1739: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1740: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1741: (patch included).</a>
1.294 david 1742: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1743: (patch included).</a>
1.294 david 1744: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1745: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1746: (patch included).</a>
1.294 david 1747: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1748: export (patch included).</a>
1.112 philen 1749: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1750: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1751: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1752: Acceptance.</a>
1.294 david 1753: A patch is available <a href="errata22.html#sourceroute">here</a>.
1754: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1755: flaw (patch included).</a>
1.294 david 1756: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1757: </ul>
1758:
1.106 deraadt 1759: <p>
1760: <li>
1.288 matthieu 1761: <a name="21"></a>
1.235 miod 1762:
1.294 david 1763: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1764: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1765: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1766: exist in other operating systems. (If you are running OpenBSD 2.1, we
1767: would strongly recommend an upgrade to the newest release, as this
1768: patch list only attempts at fixing the most important security
1769: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1770: security problems. Many of those problems were solved in ways which
1771: make it hard for us to provide patches).
1772:
1.96 deraadt 1773: <p>
1.52 deraadt 1774: <ul>
1.112 philen 1775: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1776: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1777: (patch included)</a>
1.112 philen 1778: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1779: </ul>
1.51 deraadt 1780:
1.106 deraadt 1781: <p>
1782: <li>
1.288 matthieu 1783: <a name="20"></a>
1.235 miod 1784:
1.294 david 1785: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1786: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1787: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1788: exist in other operating systems. (If you are running OpenBSD 2.0, we
1789: commend you for being there back in the old days!, but you're really
1790: missing out if you don't install a new version!)
1791:
1792: <p>
1793: <ul>
1.112 philen 1794: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1795: resolver (patch included)</a>
1796: <li>Many others... if people can hunt them down, please let me know
1797: and we'll put them up here.
1798: </ul>
1.51 deraadt 1799: <p>
1.106 deraadt 1800:
1.288 matthieu 1801: <a name="watching"></a>
1.294 david 1802: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1803:
1.21 deraadt 1804: Since we take a proactive stance with security, we are continually
1805: finding and fixing new security problems. Not all of these problems
1.80 espie 1806: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1807: confirmed to be exploitable; many simple bugs we fix do turn out to
1808: have security consequences we could not predict. We do not have the
1809: time resources to make these changes available in the above format.<p>
1.21 deraadt 1810:
1811: Thus there are usually minor security fixes in the current source code
1812: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1813: guarantee that these problems are of minimal impact and unproven
1.44 ian 1814: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1815: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1816:
1.45 deraadt 1817: People who are really concerned with security can do a number of
1818: things:<p>
1.21 deraadt 1819:
1820: <ul>
1821: <li>If you understand security issues, watch our
1.294 david 1822: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1823: eye out for things which appear security related. Since
1.21 deraadt 1824: exploitability is not proven for many of the fixes we make,
1825: do not expect the relevant commit message to say "SECURITY FIX!".
1826: If a problem is proven and serious, a patch will be available
1827: here very shortly after.
1.161 horacio 1828: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1829: security-announce mailing list</a> which will notify you for every
1.186 ian 1830: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1831: and instruct you on how to patch the problem.
1.21 deraadt 1832: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1833: complete system build from time to time (read /usr/src/Makefile
1834: carefully). Users can make the assumption that the current
1835: source tree always has stronger security than the previous release.
1.45 deraadt 1836: However, building your own system from source code is not trivial;
1.397 deraadt 1837: it is nearly 850MB of source code, and problems do occur as we
1.45 deraadt 1838: transition between major releases.
1.115 ericj 1839: <li>Install a binary snapshot for your
1.80 espie 1840: architecture, which are made available fairly often. For
1.29 deraadt 1841: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1842: </ul>
1843:
1.9 deraadt 1844: <p>
1.288 matthieu 1845: <a name="reporting"></a>
1.294 david 1846: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1847:
1.5 deraadt 1848: <p> If you find a new security problem, you can mail it to
1.294 david 1849: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1850: <br>
1.5 deraadt 1851: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1852: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1853:
1.107 deraadt 1854: <p>
1.288 matthieu 1855: <a name="papers"></a>
1.294 david 1856: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1857:
1.389 lum 1858: Numerous
1.404 deraadt 1859: <a href="papers/index.html">papers</a> have been written by OpenBSD team members,
1.389 lum 1860: many dedicated to security.
1.294 david 1861: </ul>
1.1 deraadt 1862:
1.24 deraadt 1863: </body>
1864: </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