Annotation of www/security.html, Revision 1.374
1.294 david 1: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
2: "http://www.w3.org/TR/html4/loose.dtd">
1.1 deraadt 3: <html>
4: <head>
1.20 deraadt 5: <title>OpenBSD Security</title>
1.294 david 6: <link rev=made href="mailto:www@openbsd.org">
1.345 tom 7: <link rel="alternate" type="application/rss+xml" title="OpenBSD errata (external)" href="http://www.undeadly.org/cgi?action=errata">
1.294 david 8: <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
1.1 deraadt 9: <meta name="resource-type" content="document">
10: <meta name="description" content="OpenBSD advisories">
11: <meta name="keywords" content="openbsd,main">
12: <meta name="distribution" content="global">
1.371 sthen 13: <meta name="copyright" content="This document copyright 1997-2009 by OpenBSD.">
1.1 deraadt 14: </head>
15:
1.274 david 16: <body bgcolor="#ffffff" text="#000000" link="#23238E">
1.210 jsyn 17: <a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
1.106 deraadt 18: <p>
1.294 david 19: <h2><font color="#e00000">Security</font></h2>
20: <hr>
1.1 deraadt 21:
1.114 philen 22: <table width="100%">
23: <tr>
24: <td colspan="2">
25: <strong>Index</strong>
26: </td>
27: </tr>
28: <tr>
29: <td valign="top">
1.294 david 30: <a href="#goals">Security goals of the Project</a>.<br>
31: <a href="#disclosure">Full Disclosure policy</a>.<br>
32: <a href="#process">Source code auditing process</a>.<br>
33: <a href="#default">"Secure by Default"</a>.<br>
34: <a href="#crypto">Use of Cryptography</a>.<br>
35: <p>
36: <a href="#watching">Watching changes</a>.<br>
37: <a href="#reporting">Reporting security issues</a>.<br>
38: <a href="#papers">Further Reading</a><br>
1.106 deraadt 39: <p>
1.114 philen 40: </td>
41: <td valign="top">
1.225 deraadt 42: For security advisories for specific releases, click below:<br>
43: <a href="#20">2.0</a>,
44: <a href="#21">2.1</a>,
45: <a href="#22">2.2</a>,
46: <a href="#23">2.3</a>,
47: <a href="#24">2.4</a>,
48: <a href="#25">2.5</a>,
49: <a href="#26">2.6</a>,
50: <a href="#27">2.7</a>,
51: <a href="#28">2.8</a>,
52: <a href="#29">2.9</a>,
53: <a href="#30">3.0</a>,
54: <a href="#31">3.1</a>,
1.246 deraadt 55: <a href="#32">3.2</a>,
1.261 david 56: <a href="#33">3.3</a>,
1.365 deraadt 57: <br>
1.280 david 58: <a href="#34">3.4</a>,
1.301 miod 59: <a href="#35">3.5</a>,
1.312 david 60: <a href="#36">3.6</a>,
1.318 deraadt 61: <a href="#37">3.7</a>,
1.321 brad 62: <a href="#38">3.8</a>,
1.334 brad 63: <a href="#39">3.9</a>,
1.348 merdely 64: <a href="#40">4.0</a>,
65: <a href="#41">4.1</a>,
1.357 brad 66: <a href="#42">4.2</a>,
1.365 deraadt 67: <a href="#43">4.3</a>,
68: <a href="#44">4.4</a>.
1.114 philen 69: </td>
70: </tr>
71: </table>
1.56 deraadt 72: <hr>
73:
1.294 david 74: <a name="goals"></a>
1.278 deraadt 75: <ul>
1.294 david 76: <li><h3><font color="#e00000">Goal</font></h3><p>
1.22 deraadt 77:
1.14 deraadt 78: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 79: ONE in the industry for security (if we are not already there). Our
80: open software development model permits us to take a more
81: uncompromising view towards increased security than Sun, SGI, IBM, HP,
82: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 83: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 84: cryptography</a>, we are able to take cryptographic approaches towards
85: fixing security problems.<p>
1.18 deraadt 86:
1.288 matthieu 87: <a name="disclosure"></a>
1.294 david 88: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 89:
1.45 deraadt 90: Like many readers of the
1.196 jufi 91: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 92: BUGTRAQ mailing list</a>,
1.106 deraadt 93: we believe in full disclosure of security problems. In the
94: operating system arena, we were probably the first to embrace
95: the concept. Many vendors, even of free software, still try
96: to hide issues from their users.<p>
97:
98: Security information moves very fast in cracker circles. On the other
99: hand, our experience is that coding and releasing of proper security
100: fixes typically requires about an hour of work -- very fast fix
101: turnaround is possible. Thus we think that full disclosure helps the
102: people who really care about security.<p>
103:
1.288 matthieu 104: <a name="process"></a>
1.294 david 105: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 106:
1.12 deraadt 107: Our security auditing team typically has between six and twelve
1.45 deraadt 108: members who continue to search for and fix new security holes. We
109: have been auditing since the summer of 1996. The process we follow to
110: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 111: every critical software component. We are not so much looking for
112: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 113: years later someone discovers the problem used to be a security
1.106 deraadt 114: issue, and we fixed it because it was just a bug, well, all the
115: better. Flaws have been found in just about every area of the system.
116: Entire new classes of security problems have been found during our
117: audit, and often source code which had been audited earlier needs
118: re-auditing with these new flaws in mind. Code often gets audited
119: multiple times, and by multiple people with different auditing
120: skills.<p>
1.12 deraadt 121:
1.94 deraadt 122: Some members of our security auditing team worked for Secure Networks,
123: the company that made the industry's premier network security scanning
124: software package Ballista (Secure Networks got purchased by Network
125: Associates, Ballista got renamed to Cybercop Scanner, and well...)
126: That company did a lot of security research, and thus fit in well
1.106 deraadt 127: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
128: colours since day 1.<p>
1.31 deraadt 129:
1.34 deraadt 130: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 131: In most cases we have found that the determination of exploitability
132: is not an issue. During our ongoing auditing process we find many
133: bugs, and endeavor to fix them even though exploitability is not
134: proven. We fix the bug, and we move on to find other bugs to fix. We
135: have fixed many simple and obvious careless programming errors in code
136: and only months later discovered that the problems were in fact
137: exploitable. (Or, more likely someone on
1.197 jufi 138: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 139: would report that other operating systems were vulnerable to a `newly
140: discovered problem', and then it would be discovered that OpenBSD had
141: been fixed in a previous release). In other cases we have been saved
142: from full exploitability of complex step-by-step attacks because we
143: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 144: managed such a success is the lpd advisory that Secure Networks put out.
145: <p>
1.29 deraadt 146:
1.288 matthieu 147: <a name="newtech"></a>
1.294 david 148: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 149:
150: As we audit source code, we often invent new ways of solving problems.
151: Sometimes these ideas have been used before in some random application
152: written somewhere, but perhaps not taken to the degree that we do.
153: <p>
154:
155: <ul>
156: <li>strlcpy() and strlcat()
157: <li>Memory protection purify
158: <ul>
159: <li>W^X
160: <li>.rodata segment
161: <li>Guard pages
162: <li>Randomized malloc()
163: <li>Randomized mmap()
164: <li>atexit() and stdio protection
165: </ul>
1.295 otto 166: <li>Privilege separation
1.278 deraadt 167: <li>Privilege revocation
168: <li>Chroot jailing
169: <li>New uids
170: <li>ProPolice
171: <li>... and others
172: </ul>
173: <p>
174:
1.294 david 175: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 176:
1.45 deraadt 177: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 178: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 179: commonplace in security forums like
1.197 jufi 180: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 181:
1.45 deraadt 182: The most intense part of our security auditing happened immediately
1.80 espie 183: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 184: over the last third of 1996 and first half of 1997. Thousands (yes,
185: thousands) of security issues were fixed rapidly over this year-long
186: period; bugs like the standard buffer overflows, protocol
187: implementation weaknesses, information gathering, and filesystem
188: races. Hence most of the security problems that we encountered were
189: fixed before our 2.1 release, and then a far smaller number needed
190: fixing for our 2.2 release. We do not find as many problems anymore,
191: it is simply a case of diminishing returns. Recently the security
192: problems we find and fix tend to be significantly more obscure or
193: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 194:
1.35 deraadt 195: <ul>
1.45 deraadt 196: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 197: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 198: to search for more complicated exploits, so we will too.
199: <li>Finding and fixing subtle flaws in complicated software is
200: a lot of fun.
1.35 deraadt 201: </ul>
1.106 deraadt 202: <p>
1.15 deraadt 203:
1.14 deraadt 204: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 205: to find and fix new security flaws.<p>
1.12 deraadt 206:
1.288 matthieu 207: <a name="default"></a>
1.294 david 208: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 209:
210: To ensure that novice users of OpenBSD do not need to become security
211: experts overnight (a viewpoint which other vendors seem to have), we
212: ship the operating system in a Secure by Default mode. All non-essential
213: services are disabled. As the user/administrator becomes more familiar
214: with the system, he will discover that he has to enable daemons and other
215: parts of the system. During the process of learning how to enable a new
216: service, the novice is more likely to learn of security considerations.<p>
217:
218: This is in stark contrast to the increasing number of systems that
219: ship with NFS, mountd, web servers, and various other services enabled
220: by default, creating instantaneous security problems for their users
221: within minutes after their first install.<p>
222:
1.288 matthieu 223: <a name="crypto"></a>
1.294 david 224: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 225:
226: And of course, since the OpenBSD project is based in Canada, it is possible
227: for us to integrate cryptography. For more information, read the page
1.116 deraadt 228: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 229:
1.294 david 230: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 231:
232: <li>
1.373 djm 233: <a name="45"></a>
234:
235: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
236: These are the OpenBSD 4.5 advisories -- all these problems are solved
237: in <a href=anoncvs.html>OpenBSD current</a> and the
238: <a href=stable.html>patch branch</a>.
239:
240: <p>
241: <ul>
1.374 ! sthen 242: <li><a href="errata45.html#002_pf">April 11, 2009:
! 243: When pf attempts to perform translation on a specially
! 244: crafted IP datagram, a null pointer dereference will occur,
! 245: resulting in a kernel panic.</a>
1.373 djm 246: <li><a href="errata45.html#001_openssl">April 8, 2009:
247: OpenSSL's ASN.1 handling code could be forced to make invalid
248: memory accesses by certain invalid strings or structures, allowing
249: denial-of-service attacks.</a>
250: </ul>
251:
252: <li>
1.365 deraadt 253: <a name="44"></a>
254:
255: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
256: These are the OpenBSD 4.4 advisories -- all these problems are solved
257: in <a href=anoncvs.html>OpenBSD current</a> and the
258: <a href=stable.html>patch branch</a>.
259:
260: <p>
261: <ul>
1.374 ! sthen 262: <li><a href="errata44.html#013_pf">April 11, 2009:
! 263: When pf attempts to perform translation on a specially
! 264: crafted IP datagram, a null pointer dereference will occur,
! 265: resulting in a kernel panic.</a>
1.373 djm 266: <li><a href="errata44.html#012_openssl">April 8, 2009:
267: OpenSSL's ASN.1 handling code could be forced to make invalid
268: memory accesses by certain invalid strings or structures, allowing
269: denial-of-service attacks.</a>
1.372 millert 270: <li><a href="errata44.html#011_sudo">February 22, 2009:
271: sudo(8) may allow a user listed in sudoers to run a command
272: as a different user than their access rule specifies when a Unix
273: group is used in the RunAs portion of the rule.</a>
1.370 djm 274: <li><a href="errata44.html#008_bind">January 15, 2009:
275: named(8) suffered from a similar logic error that may allow
276: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 277: <li><a href="errata44.html#007_openssl">January 9, 2009:
278: OpenSSL suffered from some logic errors that allowed bypass
279: of DSA/ECDSA certificate validation.</a>
1.367 brad 280: <li><a href="errata44.html#001_ndp">November 2, 2008:
281: The Neighbor Discovery Protocol (ndp) did not correctly verify
282: neighbor solicitation requests maybe allowing a nearby attacker
283: to intercept traffic.</a>
1.365 deraadt 284: </ul>
285:
286: <li>
1.357 brad 287: <a name="43"></a>
288:
289: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
290: These are the OpenBSD 4.3 advisories -- all these problems are solved
291: in <a href=anoncvs.html>OpenBSD current</a> and the
292: <a href=stable.html>patch branch</a>.
293:
294: <p>
295: <ul>
1.374 ! sthen 296: <li><a href="errata43.html#013_pf">April 11, 2009:
! 297: When pf attempts to perform translation on a specially
! 298: crafted IP datagram, a null pointer dereference will occur,
! 299: resulting in a kernel panic.</a>
1.373 djm 300: <li><a href="errata43.html#012_openssl">April 8, 2009:
301: OpenSSL's ASN.1 handling code could be forced to make invalid
302: memory accesses by certain invalid strings or structures, allowing
303: denial-of-service attacks.</a>
1.372 millert 304: <li><a href="errata43.html#011_sudo">February 22, 2009:
305: sudo(8) may allow a user listed in sudoers to run a command
306: as a different user than their access rule specifies when a Unix
307: group is used in the RunAs portion of the rule.</a>
1.370 djm 308: <li><a href="errata43.html#008_bind">January 15, 2009:
309: named(8) suffered from a similar logic error that may allow
310: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 311: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 312: OpenSSL suffered from some logic errors that allowed bypass
313: of DSA/ECDSA certificate validation.</a>
1.363 brad 314: <li><a href="errata43.html#005_ndp">October 2, 2008:
315: The Neighbor Discovery Protocol (ndp) did not correctly verify
316: neighbor solicitation requests maybe allowing a nearby attacker
317: to intercept traffic.</a>
1.362 brad 318: <li><a href="errata43.html#004_bind">July 23, 2008:
319: A vulnerability has been found with BIND.</a>
1.361 brad 320: <li><a href="errata43.html#003_xorg">July 15, 2008:
321: Multiple vulnerabilities in X.Org.</a>
1.359 brad 322: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 323: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 324: <li><a href="errata43.html#001_openssh">March 30, 2008:
325: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 326: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 327: </ul>
328:
1.366 miod 329: <p>
330: OpenBSD 4.2 and earlier releases are not supported anymore. The following
331: paragraphs only list advisories issued while they were maintained; these
332: releases are likely to be affected by the advisories for more recent releases.
333: <br>
1.357 brad 334:
335: <li>
1.348 merdely 336: <a name="42"></a>
337:
338: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
339: These are the OpenBSD 4.2 advisories -- all these problems are solved
340: in <a href=anoncvs.html>OpenBSD current</a> and the
341: <a href=stable.html>patch branch</a>.
342:
343: <p>
344: <ul>
1.364 tobias 345: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 346: The Neighbor Discovery Protocol (ndp) did not correctly verify
347: neighbor solicitation requests maybe allowing a nearby attacker
348: to intercept traffic.</a>
1.362 brad 349: <li><a href="errata42.html#013_bind">July 23, 2008:
350: A vulnerability has been found with BIND.</a>
1.361 brad 351: <li><a href="errata42.html#012_xorg2">July 15, 2008:
352: Multiple vulnerabilities in X.Org.</a>
1.359 brad 353: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 354: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 355: <li><a href="errata42.html#010_openssh">March 30, 2008:
356: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 357: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 358: <li><a href="errata42.html#009_ppp">March 7, 2008:
359: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 360: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
361: Multiple vulnerabilities in X.Org.</a>
1.352 henning 362: <li><a href="errata42.html#005_ifrtlabel">Jan 11, 2008:
363: A missing NULL pointer check can lead to a kernel panic.</a>
364: <li><a href="errata42.html#004_pf">Nov 27, 2007:
365: A memory leak in pf can lead to machine lockups.</a>
1.351 okan 366: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
367: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 368: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 369: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 370: </ul>
371:
372: <li>
1.346 matthieu 373: <a name="41"></a>
374:
375: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
376: These are the OpenBSD 4.1 advisories -- all these problems are solved
377: in <a href=anoncvs.html>OpenBSD current</a> and the
378: <a href=stable.html>patch branch</a>.
379:
380: <p>
381: <ul>
1.359 brad 382: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 383: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 384: <li><a href="errata41.html#015_openssh">March 30, 2008:
385: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 386: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 387: <li><a href="errata41.html#014_ppp">March 7, 2008:
388: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 389: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
390: Multiple vulnerabilities in X.Org.</a>
391: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
392: The SSL_get_shared_ciphers() function in OpenSSL contains
393: an off-by-one overflow.</a>
1.350 deraadt 394: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 395: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 396: <li><a href="errata41.html#009_file">Jul 9, 2007:
397: Fix possible heap overflow in file(1).</a>
1.346 matthieu 398: <li><a href="errata41.html#005_route6">Apr 27, 2007:
399: IPv6 type 0 route headers can be used to mount a DoS attack
400: against hosts and networks.</a>
401: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
402: Multiple vulnerabilities in X.Org.</a>
403: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
404: Incorrect mbuf handling for ICMP6 packets.</a>
405: </ul>
406:
407: <li>
1.334 brad 408: <a name="40"></a>
409: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
410: These are the OpenBSD 4.0 advisories -- all these problems are solved
411: in <a href=anoncvs.html>OpenBSD current</a> and the
412: <a href=stable.html>patch branch</a>.
413:
414: <p>
415: <ul>
1.350 deraadt 416: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 417: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 418: <li><a href="errata40.html#015_file">Jul 9, 2007:
419: Fix possible heap overflow in file(1).</a>
1.343 deraadt 420: <li><a href="errata40.html#012_route6">Apr 23, 2007:
421: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 422: against hosts and networks.</a>
1.342 mbalmer 423: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
424: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 425: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
426: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 427: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 428: Insufficient validation in vga(4) may allow an attacker to gain
429: root privileges on some i386 systems.</a>
1.339 deraadt 430: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 431: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 432: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 433: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
434: found by Chris Evans.</a>
1.339 deraadt 435: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 436: Several problems have been found in OpenSSL.</a>
1.339 deraadt 437: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 438: httpd(8) does not sanitize the Expect header from an HTTP request
439: when it is reflected back in an error message, which might allow
440: cross-site scripting (XSS) style attacks.</a>
441: </ul>
442:
443: <li>
1.321 brad 444: <a name="39"></a>
445:
446: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
447: These are the OpenBSD 3.9 advisories -- all these problems are solved
448: in <a href=anoncvs.html>OpenBSD current</a> and the
449: <a href=stable.html>patch branch</a>.
450:
451: <p>
452: <ul>
1.343 deraadt 453: <li><a href="errata39.html#022_route6">Apr 23, 2007:
454: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 455: against hosts and networks.</a>
1.342 mbalmer 456: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
457: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 458: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
459: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 460: <li><a href="errata39.html#agp">Jan 3, 2007:
461: Insufficient validation in vga(4) may allow an attacker to gain
462: root privileges on some i386 systems.</a>
1.336 brad 463: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 464: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 465: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 466: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 467: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 468: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 469: found by Chris Evans.</a>
1.333 deraadt 470: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 471: Several problems have been found in OpenSSL.</a>
1.333 deraadt 472: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 473: httpd(8) does not sanitize the Expect header from an HTTP request
474: when it is reflected back in an error message, which might allow
475: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 476: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 477: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
478: possible for an attacker to construct an invalid signature which
479: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 480: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 481: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 482: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 483: Due to the failure to correctly validate LCP configuration option
484: lengths, it is possible for an attacker to send LCP packets via an
485: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 486: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 487: A problem in isakmpd(8) caused IPsec to run partly without replay
488: protection.</a>
1.333 deraadt 489: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 490: It is possible to cause the kernel to panic when more than the default
491: number of sempahores have been allocated.</a>
1.333 deraadt 492: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 493: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
494: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
495: option.</a>
1.333 deraadt 496: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 497: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 498: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 499: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
500: overflow.</a>
1.333 deraadt 501: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 502: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 503: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 504: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 505: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 506: A race condition has been reported to exist in the handling by sendmail
507: of asynchronous signals.</a>
508: </ul>
509:
510: <li>
1.318 deraadt 511: <a name="38"></a>
512:
513: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
514: These are the OpenBSD 3.8 advisories -- all these problems are solved
515: in <a href=anoncvs.html>OpenBSD current</a> and the
516: <a href=stable.html>patch branch</a>.
517:
518: <p>
519: <ul>
1.332 brad 520: <li><a href="errata38.html#ssh2">Oct 12, 2006:
521: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 522: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 523: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 524: found by Chris Evans.</a>
525: <li><a href="errata38.html#openssl2">Oct 7, 2006:
526: Several problems have been found in OpenSSL.</a>
527: <li><a href="errata38.html#httpd2">Oct 7, 2006:
528: httpd(8) does not sanitize the Expect header from an HTTP request
529: when it is reflected back in an error message, which might allow
530: cross-site scripting (XSS) style attacks.</a>
1.329 brad 531: <li><a href="errata38.html#openssl">Sep 8, 2006:
532: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
533: possible for an attacker to construct an invalid signature which
534: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 535: <li><a href="errata38.html#bind">Sep 8, 2006:
536: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 537: <li><a href="errata38.html#sppp">Sep 2, 2006:
538: Due to the failure to correctly validate LCP configuration option
539: lengths, it is possible for an attacker to send LCP packets via an
540: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 541: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
542: A problem in isakmpd(8) caused IPsec to run partly without replay
543: protection.</a>
544: <li><a href="errata38.html#sem">Aug 25, 2006:
545: It is possible to cause the kernel to panic when more than the default
546: number of sempahores have been allocated.</a>
547: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
548: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
549: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
550: option.</a>
551: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
552: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 553: <li><a href="errata38.html#httpd">Jul 30, 2006:
554: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
555: overflow.</a>
1.324 brad 556: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
557: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 558: <li><a href="errata38.html#xorg">May 2, 2006:
559: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 560: <li><a href="errata38.html#sendmail">Mar 25, 2006:
561: A race condition has been reported to exist in the handling by sendmail
562: of asynchronous signals.</a>
563: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 564: Josh Bressers has reported a weakness in OpenSSH caused due to the
565: insecure use of the system(3) function in scp(1) when performing copy
566: operations using filenames that are supplied by the user from the
567: command line.</a>
1.321 brad 568: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 569: Do not allow users to trick suid programs into re-opening files via
570: /dev/fd.</a>
1.321 brad 571: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 572: A buffer overflow has been found in the Perl interpreter with the
573: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 574: </ul>
575:
576: <li>
1.312 david 577: <a name="37"></a>
578:
579: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
580: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 581: in <a href="anoncvs.html">OpenBSD current</a>. The
582: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
583: you should update your machine.
1.312 david 584:
585: <p>
586: <ul>
1.322 brad 587: <li><a href="errata37.html#xorg">May 2, 2006:
588: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 589: <li><a href="errata37.html#sendmail">Mar 25, 2006:
590: A race condition has been reported to exist in the handling by sendmail
591: of asynchronous signals.</a>
1.320 brad 592: <li><a href="errata37.html#ssh">Feb 12, 2006:
593: Josh Bressers has reported a weakness in OpenSSH caused due to the
594: insecure use of the system(3) function in scp(1) when performing copy
595: operations using filenames that are supplied by the user from the
596: command line.</a>
1.319 brad 597: <li><a href="errata37.html#fd">Jan 5, 2006:
598: Do not allow users to trick suid programs into re-opening files via
599: /dev/fd.</a>
600: <li><a href="errata37.html#perl">Jan 5, 2006:
601: A buffer overflow has been found in the Perl interpreter with the
602: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 603: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 604: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 605: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 606: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 607: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 608: Fix a race condition in sudo(8) that could allow a user
1.315 millert 609: to run arbitrary commands.</a>
1.318 deraadt 610: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 611: Fix a buffer overflow, memory leaks, and NULL pointer
612: dereference in cvs(1).</a>
1.312 david 613: </ul>
614:
615: <li>
1.301 miod 616: <a name="36"></a>
617:
618: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
619: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 620: in <a href="anoncvs.html">OpenBSD current</a>. The
621: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
622: you should update your machine.
1.301 miod 623:
624: <p>
1.302 markus 625: <ul>
1.317 millert 626: <li><a href="errata36.html#libz2">Jul 21, 2005:
627: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 628: <li><a href="errata36.html#libz">Jul 6, 2005:
629: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 630: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 631: Fix a race condition in sudo(8) that could allow a user
1.315 millert 632: to run arbitrary commands.</a>
1.311 deraadt 633: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 634: Fix a buffer overflow, memory leaks, and NULL pointer
635: dereference in cvs(1).</a>
1.311 deraadt 636: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 637: Due to buffer overflows in telnet(1), a malicious
638: server or man-in-the-middle attack could allow
639: execution of arbitrary code with the privileges of
640: the user invoking telnet(1).</a>
1.311 deraadt 641: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 642: More stringent checking should be done in the copy(9)
643: functions to prevent their misuse.</a>
1.311 deraadt 644: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 645: More stringent checking should be done in the copy(9)
646: functions to prevent their misuse.</a>
1.311 deraadt 647: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 648: httpd(8)'s mod_include module fails to properly validate
649: the length of user supplied tag strings prior to copying
1.305 brad 650: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 651: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 652: On systems running isakmpd(8) it is possible for a local
653: user to cause kernel memory corruption and system panic by
1.303 markus 654: setting ipsec(4) credentials on a socket.</a>
1.302 markus 655: </ul>
1.301 miod 656:
657: <li>
1.288 matthieu 658: <a name="35"></a>
1.279 deraadt 659:
1.294 david 660: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 661: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 662: in <a href="anoncvs.html">OpenBSD current</a>. The
663: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
664: you should update your machine.
1.279 deraadt 665:
666: <p>
667: <ul>
1.310 brad 668: <li><a href="errata35.html#cvs4">Apr 28, 2005:
669: Fix a buffer overflow, memory leaks, and NULL pointer
670: dereference in cvs(1).</a>
1.309 brad 671: <li><a href="errata35.html#telnet">Mar 30, 2005:
672: Due to buffer overflows in telnet(1), a malicious
673: server or man-in-the-middle attack could allow
674: execution of arbitrary code with the privileges of
675: the user invoking telnet(1).</a>
1.308 brad 676: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 677: More stringent checking should be done in the copy(9)
678: functions to prevent their misuse.</a>
1.306 brad 679: <li><a href="errata35.html#locore">Feb 28, 2005:
680: More stringent checking should be done in the copy(9)
681: functions to prevent their misuse.</a>
1.304 brad 682: <li><a href="errata35.html#httpd3">Jan 12, 2005:
683: httpd(8)'s mod_include module fails to properly validate
684: the length of user supplied tag strings prior to copying
1.305 brad 685: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 686: <li><a href="errata35.html#pfkey">Dec 14, 2004:
687: On systems running isakmpd(8) it is possible for a local
688: user to cause kernel memory corruption and system panic by
1.303 markus 689: setting ipsec(4) credentials on a socket.</a>
1.301 miod 690: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 691: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 692: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 693: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 694: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 695: httpd(8)'s mod_rewrite module can be made to write one zero byte in
696: an arbitrary memory position outside of a char array, causing a DoS
697: or possibly buffer overflows.</a>
1.301 miod 698: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 699: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 700: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 701: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 702: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 703: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 704: Multiple remote vulnerabilities have been found in the cvs(1)
705: server which can be used by CVS clients to crash or execute
1.293 brad 706: arbitrary code on the server.</a>
1.301 miod 707: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 708: kdc(8) performs inadequate checking of request fields, leading
709: to the possibility of principal impersonation from other
710: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 711: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 712: xdm(1) ignores the requestPort resource and creates a
1.293 brad 713: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 714: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 715: A buffer overflow in the cvs(1) server has been found,
716: which can be used by CVS clients to execute arbitrary code on
1.293 brad 717: the server.</a>
1.301 miod 718: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 719: Integer overflow problems were found in procfs, allowing
1.293 brad 720: reading of arbitrary kernel memory.</a>
1.301 miod 721: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 722: Pathname validation problems have been found in cvs(1),
723: allowing clients and servers access to files outside the
1.293 brad 724: repository or local CVS tree.</a>
1.279 deraadt 725: </ul>
726:
727: <p>
728: <li>
1.288 matthieu 729: <a name="34"></a>
1.261 david 730:
1.294 david 731: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 732: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 733: in <a href="anoncvs.html">OpenBSD current</a>. The
734: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
735: you should update your machine.
1.261 david 736: <p>
737: <ul>
1.302 markus 738: <li><a href="errata34.html#pfkey">Dec 14, 2004:
739: On systems running isakmpd(8) it is possible for a local
740: user to cause kernel memory corruption and system panic by
1.303 markus 741: setting ipsec(4) credentials on a socket.</a>
1.298 brad 742: <li><a href="errata34.html#xpm">Sep 16, 2004:
743: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 744: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
745: httpd(8)'s mod_rewrite module can be made to write one zero byte in
746: an arbitrary memory position outside of a char array, causing a DoS
747: or possibly buffer overflows.</a>
1.294 david 748: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 749: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 750: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 751: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 752: an attacker can delete IPsec tunnels at will.</a>
1.294 david 753: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 754: Multiple remote vulnerabilities have been found in the cvs(1)
755: server which can be used by CVS clients to crash or execute
1.293 brad 756: arbitrary code on the server.</a>
1.294 david 757: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 758: kdc(8) performs inadequate checking of request fields, leading
759: to the possibility of principal impersonation from other
760: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 761: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 762: A buffer overflow in the cvs(1) server has been found,
763: which can be used by CVS clients to execute arbitrary code on
764: the server.</a>
1.294 david 765: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 766: Integer overflow problems were found in procfs, allowing
767: reading of arbitrary kernel memory.</a>
1.294 david 768: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 769: Pathname validation problems have been found in cvs(1),
770: allowing clients and servers access to files outside the
771: repository or local CVS tree.</a>
1.294 david 772: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 773: A missing check for a NULL-pointer dereference may allow a
1.281 otto 774: remote attacker to crash applications using OpenSSL.</a>
1.294 david 775: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 776: Defects in the payload validation and processing functions of
777: isakmpd have been discovered. An attacker could send malformed
778: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 779: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 780: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
781: access module, using IP addresses without a netmask on big endian
782: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 783: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 784: An IPv6 MTU handling problem exists that could be used by an
785: attacker to cause a denial of service attack.</a>
1.294 david 786: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 787: A reference counting bug in shmat(2) could be used to write to
788: kernel memory under certain circumstances.</a>
1.294 david 789: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 790: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 791: by Thomas Walpuski.</a>
1.294 david 792: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 793: It may be possible for a local user to overrun the stack in
794: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 795: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 796: The use of certain ASN.1 encodings or malformed public keys may
797: allow an attacker to mount a denial of service attack against
798: applications linked with ssl(3).</a>
1.261 david 799: </ul>
800:
801: <li>
1.288 matthieu 802: <a name="33"></a>
1.246 deraadt 803:
1.294 david 804: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 805: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 806: in <a href="anoncvs.html">OpenBSD current</a>. The
807: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 808: you should update your machine.
1.246 deraadt 809: <p>
810: <ul>
1.294 david 811: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 812: Pathname validation problems have been found in cvs(1),
813: allowing clients and servers access to files outside the
814: repository or local CVS tree.</a>
1.294 david 815: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 816: A missing check for a NULL-pointer dereference may allow a
1.281 otto 817: remote attacker to crash applications using OpenSSL.</a>
1.294 david 818: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 819: Defects in the payload validation and processing functions of
820: isakmpd have been discovered. An attacker could send malformed
821: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 822: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 823: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
824: access module, using IP addresses without a netmask on big endian
825: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 826: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 827: An IPv6 MTU handling problem exists that could be used by an
828: attacker to cause a denial of service attack.</a>
1.294 david 829: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 830: A reference counting bug in shmat(2) could be used to write to
831: kernel memory under certain circumstances.</a>
1.294 david 832: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 833: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 834: by Thomas Walpuski.</a>
1.294 david 835: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 836: It may be possible for a local user to execute arbitrary code
837: resulting in escalation of privileges due to a stack overrun
838: in compat_ibcs2(8).</a>
1.294 david 839: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 840: The use of certain ASN.1 encodings or malformed public keys may
841: allow an attacker to mount a denial of service attack against
842: applications linked with ssl(3).</a>
1.294 david 843: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 844: Access of freed memory in pf(4) could be used to
1.260 margarid 845: remotely panic a machine using scrub rules.</a>
1.294 david 846: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 847: A buffer overflow in the address parsing in
848: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 849: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 850: OpenSSH versions prior to 3.7 contains a buffer management error
851: that is potentially exploitable.</a>
1.294 david 852: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 853: Root may be able to reduce the security level by taking advantage of
854: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 855: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 856: An improper bounds check in the kernel may allow a local user
857: to panic the kernel.</a>
1.294 david 858: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 859: An off-by-one error exists in the C library function realpath(3)
860: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 861: </ul>
862:
1.265 miod 863:
1.247 david 864: <p>
1.246 deraadt 865: <li>
1.288 matthieu 866: <a name="32"></a>
1.224 deraadt 867:
1.294 david 868: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 869: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 870: in <a href="anoncvs.html">OpenBSD current</a>. The
871: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 872: you should update your machine.
1.224 deraadt 873: <p>
874: <ul>
1.294 david 875: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 876: The use of certain ASN.1 encodings or malformed public keys may
877: allow an attacker to mount a denial of service attack against
878: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 879: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 880: Access of freed memory in pf(4) could be used to
1.260 margarid 881: remotely panic a machine using scrub rules.</a>
1.294 david 882: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 883: A buffer overflow in the address parsing in
884: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 885: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 886: OpenSSH versions prior to 3.7 contains a buffer management error
887: that is potentially exploitable.</a>
1.294 david 888: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 889: Fix for a potential security issue in
890: sendmail(8) with respect to DNS maps.</a>
1.294 david 891: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 892: An off-by-one error exists in the C library function realpath(3)
893: may allow an attacker to gain escalated privileges.</a>
1.294 david 894: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 895: A buffer overflow in the address parsing in
896: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 897: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 898: A cryptographic weaknesses in the Kerberos v4 protocol can be
899: exploited on Kerberos v5 as well.</a>
1.294 david 900: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 901: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 902: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 903: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 904: Various SSL and TLS operations in OpenSSL are vulnerable to
905: timing attacks.</a>
1.294 david 906: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 907: A buffer overflow in lprm(1) may allow an attacker to elevate
908: privileges to user daemon.</a>.
1.294 david 909: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 910: A buffer overflow in the envelope comments processing in
911: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 912: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 913: httpd(8) leaks file inode numbers via ETag header as well as
914: child PIDs in multipart MIME boundary generation. This could
915: lead, for example, to NFS exploitation because it uses inode
916: numbers as part of the file handle.</a>
1.294 david 917: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 918: In ssl(8) an information leak can occur via timing by performing
919: a MAC computation even if incorrect block cipher padding has
920: been found, this is a countermeasure. Also, check for negative
921: sizes, in allocation routines.</a>
1.294 david 922: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 923: A double free exists in cvs(1) that could lead to privilege
924: escalation for cvs configurations where the cvs command is
1.233 margarid 925: run as a privileged user.</a>
1.294 david 926: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 927: A buffer overflow exists in named(8) that could lead to a
928: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 929: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 930: A logic error in the pool kernel memory allocator could cause
931: memory corruption in low-memory situations, causing the system
932: to crash.</a>
1.294 david 933: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 934: An attacker can bypass smrsh(8)'s restrictions and execute
935: arbitrary commands with the privileges of his own account.</a>
1.294 david 936: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 937: Network bridges running pf with scrubbing enabled could cause
938: mbuf corruption, causing the system to crash.</a>
1.294 david 939: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 940: A buffer overflow can occur in the kadmind(8) daemon, leading
941: to possible remote crash or exploit.</a>
1.224 deraadt 942: </ul>
943:
1.227 miod 944: <p>
945: <li>
1.288 matthieu 946: <a name="31"></a>
1.203 deraadt 947:
1.294 david 948: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 949: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 950: in <a href="anoncvs.html">OpenBSD current</a>. The
951: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 952: you should update your machine.
1.203 deraadt 953:
954: <p>
955: <ul>
1.294 david 956: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 957: A buffer overflow in the address parsing in
958: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 959: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 960: A cryptographic weaknesses in the Kerberos v4 protocol can be
961: exploited on Kerberos v5 as well.</a>
1.294 david 962: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 963: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 964: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 965: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 966: Various SSL and TLS operations in OpenSSL are vulnerable to
967: timing attacks.</a>
1.294 david 968: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 969: A buffer overflow in lprm(1) may allow an attacker to gain
970: root privileges.</a>
1.294 david 971: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 972: A buffer overflow in the envelope comments processing in
973: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 974: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 975: In ssl(8) an information leak can occur via timing by performing
976: a MAC computation even if incorrect block cipher padding has
977: been found, this is a countermeasure. Also, check for negative
978: sizes, in allocation routines.</a>
1.294 david 979: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 980: A double free exists in cvs(1) that could lead to privilege
981: escalation for cvs configurations where the cvs command is
1.294 david 982: run as a privileged user</a>.
983: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 984: A buffer overflow exists in named(8) that could lead to a
985: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 986: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 987: Incorrect argument checking in the getitimer(2) system call
988: may allow an attacker to crash the system.</a>
1.294 david 989: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 990: An attacker can bypass smrsh(8)'s restrictions and execute
991: arbitrary commands with the privileges of his own account.</a>
1.294 david 992: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 993: A buffer overflow can occur in the kadmind(8) daemon, leading
994: to possible remote crash or exploit.</a>
1.294 david 995: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 996: Incorrect argument checking in the setitimer(2) system call
997: may allow an attacker to write to kernel memory.</a>
1.294 david 998: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 999: An insufficient boundary check in the select system call
1.220 miod 1000: allows an attacker to overwrite kernel memory and execute arbitrary code
1001: in kernel context.</a>
1.294 david 1002: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1003: Several remote buffer overflows can occur in the SSL2 server and SSL3
1004: client of the ssl(8) library, as in the ASN.1 parser code in the
1005: crypto(3) library, all of them being potentially remotely
1006: exploitable.</a>
1.294 david 1007: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1008: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1009: possible remote crash.</a>
1.294 david 1010: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1011: A race condition exists in the pppd(8) daemon which may cause it to
1012: alter the file permissions of an arbitrary file.</a>
1.294 david 1013: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1014: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1015: crash.</a>
1.294 david 1016: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1017: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1018: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1019: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1020: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1021: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1022: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1023: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1024: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1025: input validation error that can result in an integer overflow and
1026: privilege escalation.</a>
1.294 david 1027: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1028: A buffer overflow can occur during the interpretation of chunked
1029: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1030: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1031: Under certain conditions, on systems using YP with netgroups
1032: in the password database, it is possible that sshd(8) does
1033: ACL checks for the requested user name but uses the password
1034: database entry of a different user for authentication. This
1035: means that denied users might authenticate successfully
1036: while permitted users could be locked out.</a>
1.294 david 1037: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1038: A race condition exists that could defeat the kernel's
1039: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1040: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1041: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1042: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1043: A local user can gain super-user privileges due to a buffer
1044: overflow in sshd(8) if AFS has been configured on the system
1045: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1046: in the sshd_config file.</a>
1.203 deraadt 1047: </ul>
1048:
1.235 miod 1049: <p>
1.203 deraadt 1050: <li>
1.288 matthieu 1051: <a name="30"></a>
1.187 deraadt 1052:
1.294 david 1053: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1054: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1055: in <a href="anoncvs.html">OpenBSD current</a>. The
1056: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1057: you should update your machine.
1.187 deraadt 1058:
1059: <p>
1060: <ul>
1.294 david 1061: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1062: A buffer overflow exists in named(8) that could lead to a
1063: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1064: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1065: Incorrect argument checking in the getitimer(2) system call
1066: may allow an attacker to crash the system.</a>
1.294 david 1067: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1068: An attacker can bypass smrsh(8)'s restrictions and execute
1069: arbitrary commands with the privileges of his own account.</a>
1.294 david 1070: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1071: A buffer overflow can occur in the kadmind(8) daemon, leading
1072: to possible remote crash or exploit.</a>
1.294 david 1073: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1074: Incorrect argument checking in the setitimer(2) system call
1075: may allow an attacker to write to kernel memory.</a>
1.294 david 1076: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1077: An insufficient boundary check in the select and poll system calls
1078: allows an attacker to overwrite kernel memory and execute arbitrary code
1079: in kernel context.</a>
1.294 david 1080: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1081: Several remote buffer overflows can occur in the SSL2 server and SSL3
1082: client of the ssl(8) library, as in the ASN.1 parser code in the
1083: crypto(3) library, all of them being potentially remotely
1084: exploitable.</a>
1.294 david 1085: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1086: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1087: possible remote crash.</a>
1.294 david 1088: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1089: A race condition exists in the pppd(8) daemon which may cause it to
1090: alter the file permissions of an arbitrary file.</a>
1.294 david 1091: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1092: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1093: crash.</a>
1.294 david 1094: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1095: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1096: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1097: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1098: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1099: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1100: input validation error that can result in an integer overflow and
1101: privilege escalation.</a>
1.294 david 1102: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1103: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1104: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1105: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1106: A buffer overflow can occur during the interpretation of chunked
1107: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1108: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1109: A race condition exists that could defeat the kernel's
1110: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1111: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1112: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1113: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1114: A local user can gain super-user privileges due to a buffer
1115: overflow in sshd(8) if AFS has been configured on the system
1116: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1117: in the sshd_config file.</a>
1.294 david 1118: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1119: The mail(1) was interpreting tilde escapes even when invoked
1120: in non-interactive mode. As mail(1) is called as root from cron,
1121: this can lead to a local root compromise.</a>
1.294 david 1122: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1123: Under certain conditions, on systems using YP with netgroups in
1124: the password database, it is possible for the rexecd(8) and rshd(8)
1125: daemons to execute a shell from a password database entry for a
1126: different user. Similarly, atrun(8) may change to the wrong
1127: home directory when running jobs.</a>
1.294 david 1128: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1129: A potential double free() exists in the zlib library;
1130: this is not exploitable on OpenBSD.
1131: The kernel also contains a copy of zlib; it is not
1132: currently known if the kernel zlib is exploitable.</a>
1.294 david 1133: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1134: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1135: may allow a local user to gain super-user privileges.</a>
1.294 david 1136: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1137: A race condition between the ptrace(2) and execve(2) system calls
1138: allows an attacker to modify the memory contents of suid/sgid
1139: processes which could lead to compromise of the super-user account.</a>
1.294 david 1140: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1141: There is a security hole in sudo(8) that can be exploited
1142: when the Postfix sendmail replacement is installed that may
1143: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1144: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1145: An attacker can trick a machine running the lpd daemon into
1146: creating new files in the root directory from a machine with
1147: remote line printer access.</a>
1.294 david 1148: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1149: The vi.recover script can be abused in such a way as
1150: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1151: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1152: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1153: resulting in a crash.</a>
1.294 david 1154: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1155: A security hole that may allow an attacker to partially authenticate
1156: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1157: </ul>
1158:
1159: <p>
1160: <li>
1.288 matthieu 1161: <a name="29"></a>
1.173 deraadt 1162:
1.294 david 1163: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1164: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1165: in <a href="anoncvs.html">OpenBSD current</a>. The
1166: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1167: you should update your machine.
1168:
1.173 deraadt 1169:
1170: <p>
1171: <ul>
1.294 david 1172: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1173: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1174: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1175: A race condition exists that could defeat the kernel's
1176: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1177: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1178: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1179: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1180: A local user can gain super-user privileges due to a buffer
1181: overflow in sshd(8) if AFS has been configured on the system
1182: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1183: in the sshd_config file.</a>
1.294 david 1184: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1185: The mail(1) was interpreting tilde escapes even when invoked
1186: in non-interactive mode. As mail(1) is called as root from cron,
1187: this can lead to a local root compromise.</a>
1.294 david 1188: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1189: A potential double free() exists in the zlib library;
1190: this is not exploitable on OpenBSD.
1191: The kernel also contains a copy of zlib; it is not
1192: currently known if the kernel zlib is exploitable.</a>
1.294 david 1193: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1194: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1195: may allow a local user to gain super-user privileges.</a>
1.294 david 1196: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1197: A race condition between the ptrace(2) and execve(2) system calls
1198: allows an attacker to modify the memory contents of suid/sgid
1199: processes which could lead to compromise of the super-user account.</a>
1.294 david 1200: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1201: There is a security hole in sudo(8) that can be exploited
1202: when the Postfix sendmail replacement is installed that may
1203: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1204: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1205: An attacker can trick a machine running the lpd daemon into
1206: creating new files in the root directory from a machine with
1207: remote line printer access.</a>
1.294 david 1208: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1209: The vi.recover script can be abused in such a way as
1210: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1211: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1212: A security hole exists in uuxqt(8) that may allow an
1213: attacker to gain root privileges.</a>
1.294 david 1214: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1215: A security hole exists in lpd(8) that may allow an
1216: attacker to gain root privileges if lpd is running.</a>
1.294 david 1217: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1218: A security hole exists in sendmail(8) that may allow an
1219: attacker on the local host to gain root privileges.</a>
1.294 david 1220: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1221: A kernel buffer overflow in the NFS code can be used to execute
1222: arbitrary code by users with mount privileges (only root by
1.181 millert 1223: default).</a>
1.294 david 1224: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1225: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1226: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1227: sshd(8) allows users to delete arbitrary files named "cookies"
1228: if X11 forwarding is enabled. X11 forwarding is disabled
1229: by default.</a>
1.294 david 1230: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1231: Programs using the fts routines can be tricked into changing
1232: into the wrong directory.</a>
1.294 david 1233: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1234: Sendmail signal handlers contain unsafe code,
1235: leading to numerous race conditions.</a>
1.173 deraadt 1236: </ul>
1237:
1238: <p>
1239: <li>
1.288 matthieu 1240: <a name="28"></a>
1.152 deraadt 1241:
1.294 david 1242: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1243: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1244: in <a href="anoncvs.html">OpenBSD current</a>. The
1245: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1246: you should update your machine.
1247:
1.152 deraadt 1248:
1249: <p>
1250: <ul>
1.294 david 1251: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1252: A security hole exists in uuxqt(8) that may allow an
1253: attacker to gain root privileges.</a>
1.294 david 1254: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1255: A security hole exists in lpd(8) that may allow an
1256: attacker to gain root privileges if lpd is running.</a>
1.294 david 1257: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1258: A security hole exists in sendmail(8) that may allow an
1259: attacker on the local host to gain root privileges.</a>
1.294 david 1260: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1261: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1262: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1263: Programs using the fts routines can be tricked into changing
1264: into the wrong directory.</a>
1.294 david 1265: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1266: Sendmail signal handlers contain unsafe code,
1267: leading to numerous race conditions.</a>
1.294 david 1268: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1269: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1270: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1271: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1272: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1273: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1274: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1275: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1276: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1277: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1278: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1279: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1280: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1281: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1282: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1283: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1284: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1285: rnd(4) did not use all of its input when written to.</a>
1.294 david 1286: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1287: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1288: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1289: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1290: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1291: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1292: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1293: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1294: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1295: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1296: </ul>
1297:
1298: <p>
1299: <li>
1.288 matthieu 1300: <a name="27"></a>
1.124 deraadt 1301:
1.294 david 1302: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1303: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1304: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1305: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1306:
1307: <p>
1308: <ul>
1.294 david 1309: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1310: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1311: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1312: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1313: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1314: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1315: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1316: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1317: (patch included)</a>
1.294 david 1318: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1319: X11 libraries have 2 potential overflows in xtrans code.
1320: (patch included)</a>
1.294 david 1321: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1322: Apache mod_rewrite and mod_vhost_alias modules could expose files
1323: on the server in certain configurations if used.
1324: (patch included)</a>
1.294 david 1325: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1326: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1327: TERMPATH and TERMCAP environment variables as it should.
1328: (patch included)</a>
1.294 david 1329: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1330: There are printf-style format string bugs in several privileged
1331: programs. (patch included)</a>
1.294 david 1332: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1333: libcurses honored terminal descriptions in the $HOME/.terminfo
1334: directory as well as in the TERMCAP environment variable for
1335: setuid and setgid applications.
1.146 deraadt 1336: (patch included)</a>
1.294 david 1337: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1338: A format string vulnerability exists in talkd(8).
1339: (patch included)</a>
1.294 david 1340: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1341: A format string vulnerability exists in the pw_error() function of the
1342: libutil library, yielding localhost root through chpass(1).
1343: (patch included)</a>
1.294 david 1344: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1345: Bad ESP/AH packets could cause a crash under certain conditions.
1346: (patch included)</a>
1.294 david 1347: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1348: A format string vulnerability (localhost root) exists in xlock(1).
1349: (patch included)</a>
1.294 david 1350: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1351: Various bugs found in X11 libraries have various side effects, almost
1352: completely denial of service in OpenBSD.
1353: (patch included)</a>
1.294 david 1354: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1355: Just like pretty much all the other unix ftp daemons
1356: on the planet, ftpd had a remote root hole in it.
1357: Luckily, ftpd was not enabled by default.
1.137 deraadt 1358: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1359: (patch included)</a>
1.294 david 1360: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1361: Mopd, very rarely used, contained some buffer overflows.
1362: (patch included)</a>
1.294 david 1363: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1364: libedit would check for a <b>.editrc</b> file in the current
1365: directory. Not known to be a real security issue, but a patch
1366: is available anyways.
1367: (patch included)</a>
1.294 david 1368: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1369: A serious bug in dhclient(8) could allow strings from a
1370: malicious dhcp server to be executed in the shell as root.
1371: (patch included)</a>
1.294 david 1372: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1373: A serious bug in isakmpd(8) policy handling wherein
1374: policy verification could be completely bypassed in isakmpd.
1375: (patch included)</a>
1.294 david 1376: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1377: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1378: should not be used, and results in security problems on
1379: other operating systems.</a>
1.294 david 1380: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1381: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1382: (patch included)</a>
1.294 david 1383: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1384: Improper use of ipf <i>keep-state</i> rules can result
1385: in firewall rules being bypassed. (patch included)</a>
1386:
1.124 deraadt 1387: </ul>
1388:
1389: <p>
1390: <li>
1.288 matthieu 1391: <a name="26"></a>
1.119 deraadt 1392:
1.294 david 1393: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1394: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1395: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1396: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1397:
1398: <p>
1399: <ul>
1.294 david 1400: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1401: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1402: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1403: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1404: Improper use of ipf <i>keep-state</i> rules can result
1405: in firewall rules being bypassed. (patch included)</a>
1.294 david 1406: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1407: xlockmore has a bug which a localhost attacker can use to gain
1408: access to the encrypted root password hash (which is normally
1.245 miod 1409: encoded using blowfish</a> (see
1.294 david 1410: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1411: crypt(3)</a>)
1.245 miod 1412: (patch included).
1.294 david 1413: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1414: Systems running with procfs enabled and mounted are
1415: vulnerable to a very tricky exploit. procfs is not
1416: mounted by default.
1417: (patch included).</a>
1.294 david 1418: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1419: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1420: thus exposing the system to a race where the aliases file
1421: did not exist.
1.119 deraadt 1422: (patch included).</a>
1.294 david 1423: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1424: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1425: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1426: A buffer overflow in the RSAREF code included in the
1427: USA version of libssl, is possibly exploitable in
1428: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1429: (patch included).<br></a>
1430: <strong>Update:</strong> Turns out that this was not exploitable
1431: in any of the software included in OpenBSD 2.6.
1.294 david 1432: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1433: Any user could change interface media configurations, resulting in
1434: a localhost denial of service attack.
1.121 deraadt 1435: (patch included).</a>
1.119 deraadt 1436: </ul>
1437:
1438: <p>
1439: <li>
1.288 matthieu 1440: <a name="25"></a>
1.106 deraadt 1441:
1.294 david 1442: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1443: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1444: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1445: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1446:
1.96 deraadt 1447: <p>
1.104 deraadt 1448: <ul>
1.294 david 1449: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1450: In cron(8), make sure argv[] is NULL terminated in the
1451: fake popen() and run sendmail as the user, not as root.
1452: (patch included).</a>
1.294 david 1453: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1454: filesystems had an overrun in their handling of uio_offset
1455: in their readdir() routines. (These filesystems are not
1456: enabled by default). (patch included).</a>
1.294 david 1457: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1458: when we execve() a new process. (patch included).</a>
1.294 david 1459: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1460: been handled by IPsec may be transmitted as cleartext.
1461: PF_KEY SA expirations may leak kernel resources.
1462: (patch included).</a>
1.294 david 1463: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1464: motd re-writing and change the find(1) to use -execdir
1465: (patch included).</a>
1.294 david 1466: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1467: users to chflags(2) or fchflags(2) on character or block devices
1468: which they may currently be the owner of (patch included).</a>
1.294 david 1469: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1470: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1471: </ul>
1472:
1.106 deraadt 1473: <p>
1474: <li>
1.288 matthieu 1475: <a name="24"></a>
1.235 miod 1476:
1.294 david 1477: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1478: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1479: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1480: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1481:
1.96 deraadt 1482: <p>
1.75 deraadt 1483: <ul>
1.294 david 1484: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1485: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1486: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1487: another kernel crash case caused by the <strong>crashme</strong>
1488: program (patch included).</a>
1.294 david 1489: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1490: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1491: (patch included).</a>
1.294 david 1492: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1493: existed in ping(8). (patch included).</a>
1.294 david 1494: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1495: the ipq, which could permit an attacker to cause a crash.
1496: (patch included).</a>
1.294 david 1497: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1498: kernel between accept(2) and select(2) could permit an attacker
1499: to hang sockets from remote.
1500: (patch included).</a>
1.294 david 1501: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1502: bog the machine excessively and cause problems.
1503: (patch included).</a>
1.294 david 1504: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1505: DDB interacted to possibly cause a crash.
1506: (patch included).</a>
1.294 david 1507: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1508: (patch included).</a>
1.294 david 1509: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1510: problem in bootpd(8). (patch included).</a>
1.294 david 1511: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1512: exploitable problem relating to environment variables in termcap
1513: and curses. (patch included).</a>
1.294 david 1514: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1515: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1516: </ul>
1517:
1.106 deraadt 1518: <p>
1519: <li>
1.288 matthieu 1520: <a name="23"></a>
1.235 miod 1521:
1.294 david 1522: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1523: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1524: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1525: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1526:
1.96 deraadt 1527: <p>
1.53 matthieu 1528: <ul>
1.294 david 1529: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1530: problem in bootpd(8). (patch included).</a>
1.294 david 1531: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1532: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1533: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1534: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1535: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1536: chpass(1) has a file descriptor leak which allows an
1537: attacker to modify /etc/master.passwd.</a>
1.294 david 1538: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1539: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1540: should not be executed with fd slots 0, 1, or 2 free.
1541: (patch included).</a>
1.294 david 1542: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1543: libraries (patches included).</a>
1.294 david 1544: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1545: processes too permissive (4th revision patch included).</a>
1.294 david 1546: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1547: of immutable and append-only file flags. (patch included).</a>
1.294 david 1548: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1549: if IPSEC is enabled (patch included).</a>
1.294 david 1550: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1551: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1552: </ul>
1.9 deraadt 1553:
1.106 deraadt 1554: <p>
1555: <li>
1.288 matthieu 1556: <a name="22"></a>
1.235 miod 1557:
1.294 david 1558: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1559: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1560: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1561: still exist in other operating systems. (The supplied patches are for
1562: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1563:
1.96 deraadt 1564: <p>
1.9 deraadt 1565: <ul>
1.294 david 1566: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1567: packets if IPSEC is enabled (patch included).</a>
1.294 david 1568: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1569: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1570: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1571: (patch included).</a>
1.294 david 1572: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1573: (patch included).</a>
1.294 david 1574: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1575: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1576: (patch included).</a>
1.294 david 1577: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1578: export (patch included).</a>
1.112 philen 1579: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1580: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1581: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1582: Acceptance.</a>
1.294 david 1583: A patch is available <a href="errata22.html#sourceroute">here</a>.
1584: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1585: flaw (patch included).</a>
1.294 david 1586: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1587: </ul>
1588:
1.106 deraadt 1589: <p>
1590: <li>
1.288 matthieu 1591: <a name="21"></a>
1.235 miod 1592:
1.294 david 1593: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1594: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1595: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1596: exist in other operating systems. (If you are running OpenBSD 2.1, we
1597: would strongly recommend an upgrade to the newest release, as this
1598: patch list only attempts at fixing the most important security
1599: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1600: security problems. Many of those problems were solved in ways which
1601: make it hard for us to provide patches).
1602:
1.96 deraadt 1603: <p>
1.52 deraadt 1604: <ul>
1.112 philen 1605: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1606: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1607: (patch included)</a>
1.112 philen 1608: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1609: </ul>
1.51 deraadt 1610:
1.106 deraadt 1611: <p>
1612: <li>
1.288 matthieu 1613: <a name="20"></a>
1.235 miod 1614:
1.294 david 1615: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1616: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1617: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1618: exist in other operating systems. (If you are running OpenBSD 2.0, we
1619: commend you for being there back in the old days!, but you're really
1620: missing out if you don't install a new version!)
1621:
1622: <p>
1623: <ul>
1.112 philen 1624: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1625: resolver (patch included)</a>
1626: <li>Many others... if people can hunt them down, please let me know
1627: and we'll put them up here.
1628: </ul>
1.51 deraadt 1629: <p>
1.106 deraadt 1630:
1.288 matthieu 1631: <a name="watching"></a>
1.294 david 1632: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1633:
1.21 deraadt 1634: Since we take a proactive stance with security, we are continually
1635: finding and fixing new security problems. Not all of these problems
1.80 espie 1636: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1637: confirmed to be exploitable; many simple bugs we fix do turn out to
1638: have security consequences we could not predict. We do not have the
1639: time resources to make these changes available in the above format.<p>
1.21 deraadt 1640:
1641: Thus there are usually minor security fixes in the current source code
1642: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1643: guarantee that these problems are of minimal impact and unproven
1.44 ian 1644: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1645: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1646:
1.45 deraadt 1647: People who are really concerned with security can do a number of
1648: things:<p>
1.21 deraadt 1649:
1650: <ul>
1651: <li>If you understand security issues, watch our
1.294 david 1652: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1653: eye out for things which appear security related. Since
1.21 deraadt 1654: exploitability is not proven for many of the fixes we make,
1655: do not expect the relevant commit message to say "SECURITY FIX!".
1656: If a problem is proven and serious, a patch will be available
1657: here very shortly after.
1.161 horacio 1658: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1659: security-announce mailing list</a> which will notify you for every
1.186 ian 1660: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1661: and instruct you on how to patch the problem.
1.21 deraadt 1662: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1663: complete system build from time to time (read /usr/src/Makefile
1664: carefully). Users can make the assumption that the current
1665: source tree always has stronger security than the previous release.
1.45 deraadt 1666: However, building your own system from source code is not trivial;
1.265 miod 1667: it is nearly 600MB of source code, and problems do occur as we
1.45 deraadt 1668: transition between major releases.
1.115 ericj 1669: <li>Install a binary snapshot for your
1.80 espie 1670: architecture, which are made available fairly often. For
1.29 deraadt 1671: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1672: </ul>
1673:
1.9 deraadt 1674: <p>
1.288 matthieu 1675: <a name="reporting"></a>
1.294 david 1676: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1677:
1.5 deraadt 1678: <p> If you find a new security problem, you can mail it to
1.294 david 1679: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1680: <br>
1.5 deraadt 1681: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1682: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1683:
1.107 deraadt 1684: <p>
1.288 matthieu 1685: <a name="papers"></a>
1.294 david 1686: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1687:
1688: A number of papers have been written by OpenBSD team members, about security
1689: related changes they have done in OpenBSD. The postscript versions of these
1.108 deraadt 1690: documents are available as follows.<p>
1.107 deraadt 1691:
1692: <ul>
1.113 deraadt 1693: <li>A Future-Adaptable Password Scheme.<br>
1.294 david 1694: <a href="events.html#usenix99">Usenix 1999</a>,
1695: by <a href="mailto:provos@openbsd.org">Niels Provos</a>,
1696: <a href="mailto:dm@openbsd.org">David Mazieres</a>.<br>
1697: <a href="papers/bcrypt-paper.ps">paper</a> and
1698: <a href="papers/bcrypt-slides.ps">slides</a>.
1.113 deraadt 1699: <p>
1700: <li>Cryptography in OpenBSD: An Overview.<br>
1.294 david 1701: <a href="events.html#usenix99">Usenix 1999</a>,
1702: by <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>,
1703: <a href="mailto:niklas@openbsd.org">Niklas Hallqvist</a>,
1704: <a href="mailto:art@openbsd.org">Artur Grabowski</a>,
1705: <a href="mailto:angelos@openbsd.org">Angelos D. Keromytis</a>,
1706: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1707: <a href="papers/crypt-paper.ps">paper</a> and
1708: <a href="papers/crypt-slides.ps">slides</a>.
1.113 deraadt 1709: <p>
1710: <li>strlcpy and strlcat -- consistent, safe, string copy and concatenation.<br>
1.294 david 1711: <a href="events.html#usenix99">Usenix 1999</a>,
1712: by <a href="mailto:millert@openbsd.org">Todd C. Miller</a>,
1713: <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>.<br>
1714: <a href="papers/strlcpy-paper.ps">paper</a> and
1715: <a href="papers/strlcpy-slides.ps">slides</a>.
1.113 deraadt 1716: <p>
1.118 deraadt 1717: <li>Dealing with Public Ethernet Jacks-Switches, Gateways, and Authentication.<br>
1.294 david 1718: <a href="events.html#lisa99">LISA 1999</a>,
1719: by <a href="mailto:beck@openbsd.org">Bob Beck</a>.<br>
1720: <a href="papers/authgw-paper.ps">paper</a> and
1721: <a href="papers/authgw-slides.ps">slides</a>.
1.118 deraadt 1722: <p>
1.153 jufi 1723: <li>Encrypting Virtual Memory<br>
1.294 david 1724: <a href="events.html#sec2000">Usenix Security 2000</a>,
1725: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1726: <a href="papers/swapencrypt.ps">paper</a> and
1727: <a href="papers/swapencrypt-slides.ps">slides</a>.
1.142 deraadt 1728: <p>
1.107 deraadt 1729: </ul>
1.294 david 1730: </ul>
1.106 deraadt 1731:
1.2 deraadt 1732: <hr>
1.294 david 1733: <a href="index.html"><img height=24 width=24 src="back.gif" border=0 alt="OpenBSD"></a>
1734: <a href="mailto:www@openbsd.org">www@openbsd.org</a>
1.24 deraadt 1735: <br>
1.374 ! sthen 1736: <small>$OpenBSD: security.html,v 1.373 2009/04/08 02:44:22 djm Exp $</small>
1.1 deraadt 1737:
1.24 deraadt 1738: </body>
1739: </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