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