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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>,
1.377 tobias 68: <a href="#44">4.4</a>,
1.378 jasper 69: <a href="#45">4.5</a>,
70: <a href="#46">4.6</a>.
1.114 philen 71: </td>
72: </tr>
73: </table>
1.56 deraadt 74: <hr>
75:
1.294 david 76: <a name="goals"></a>
1.278 deraadt 77: <ul>
1.294 david 78: <li><h3><font color="#e00000">Goal</font></h3><p>
1.22 deraadt 79:
1.14 deraadt 80: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 81: ONE in the industry for security (if we are not already there). Our
82: open software development model permits us to take a more
83: uncompromising view towards increased security than Sun, SGI, IBM, HP,
84: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 85: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 86: cryptography</a>, we are able to take cryptographic approaches towards
87: fixing security problems.<p>
1.18 deraadt 88:
1.288 matthieu 89: <a name="disclosure"></a>
1.294 david 90: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 91:
1.45 deraadt 92: Like many readers of the
1.196 jufi 93: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 94: BUGTRAQ mailing list</a>,
1.106 deraadt 95: we believe in full disclosure of security problems. In the
96: operating system arena, we were probably the first to embrace
97: the concept. Many vendors, even of free software, still try
98: to hide issues from their users.<p>
99:
100: Security information moves very fast in cracker circles. On the other
101: hand, our experience is that coding and releasing of proper security
102: fixes typically requires about an hour of work -- very fast fix
103: turnaround is possible. Thus we think that full disclosure helps the
104: people who really care about security.<p>
105:
1.288 matthieu 106: <a name="process"></a>
1.294 david 107: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 108:
1.12 deraadt 109: Our security auditing team typically has between six and twelve
1.45 deraadt 110: members who continue to search for and fix new security holes. We
111: have been auditing since the summer of 1996. The process we follow to
112: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 113: every critical software component. We are not so much looking for
114: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 115: years later someone discovers the problem used to be a security
1.106 deraadt 116: issue, and we fixed it because it was just a bug, well, all the
117: better. Flaws have been found in just about every area of the system.
118: Entire new classes of security problems have been found during our
119: audit, and often source code which had been audited earlier needs
120: re-auditing with these new flaws in mind. Code often gets audited
121: multiple times, and by multiple people with different auditing
122: skills.<p>
1.12 deraadt 123:
1.94 deraadt 124: Some members of our security auditing team worked for Secure Networks,
125: the company that made the industry's premier network security scanning
126: software package Ballista (Secure Networks got purchased by Network
127: Associates, Ballista got renamed to Cybercop Scanner, and well...)
128: That company did a lot of security research, and thus fit in well
1.106 deraadt 129: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
130: colours since day 1.<p>
1.31 deraadt 131:
1.34 deraadt 132: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 133: In most cases we have found that the determination of exploitability
134: is not an issue. During our ongoing auditing process we find many
135: bugs, and endeavor to fix them even though exploitability is not
136: proven. We fix the bug, and we move on to find other bugs to fix. We
137: have fixed many simple and obvious careless programming errors in code
138: and only months later discovered that the problems were in fact
139: exploitable. (Or, more likely someone on
1.197 jufi 140: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 141: would report that other operating systems were vulnerable to a `newly
142: discovered problem', and then it would be discovered that OpenBSD had
143: been fixed in a previous release). In other cases we have been saved
144: from full exploitability of complex step-by-step attacks because we
145: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 146: managed such a success is the lpd advisory that Secure Networks put out.
147: <p>
1.29 deraadt 148:
1.288 matthieu 149: <a name="newtech"></a>
1.294 david 150: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 151:
152: As we audit source code, we often invent new ways of solving problems.
153: Sometimes these ideas have been used before in some random application
154: written somewhere, but perhaps not taken to the degree that we do.
155: <p>
156:
157: <ul>
158: <li>strlcpy() and strlcat()
159: <li>Memory protection purify
160: <ul>
161: <li>W^X
162: <li>.rodata segment
163: <li>Guard pages
164: <li>Randomized malloc()
165: <li>Randomized mmap()
166: <li>atexit() and stdio protection
167: </ul>
1.295 otto 168: <li>Privilege separation
1.278 deraadt 169: <li>Privilege revocation
170: <li>Chroot jailing
171: <li>New uids
172: <li>ProPolice
173: <li>... and others
174: </ul>
175: <p>
176:
1.294 david 177: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 178:
1.45 deraadt 179: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 180: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 181: commonplace in security forums like
1.197 jufi 182: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 183:
1.45 deraadt 184: The most intense part of our security auditing happened immediately
1.80 espie 185: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 186: over the last third of 1996 and first half of 1997. Thousands (yes,
187: thousands) of security issues were fixed rapidly over this year-long
188: period; bugs like the standard buffer overflows, protocol
189: implementation weaknesses, information gathering, and filesystem
190: races. Hence most of the security problems that we encountered were
191: fixed before our 2.1 release, and then a far smaller number needed
192: fixing for our 2.2 release. We do not find as many problems anymore,
193: it is simply a case of diminishing returns. Recently the security
194: problems we find and fix tend to be significantly more obscure or
195: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 196:
1.35 deraadt 197: <ul>
1.45 deraadt 198: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 199: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 200: to search for more complicated exploits, so we will too.
201: <li>Finding and fixing subtle flaws in complicated software is
202: a lot of fun.
1.35 deraadt 203: </ul>
1.106 deraadt 204: <p>
1.15 deraadt 205:
1.14 deraadt 206: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 207: to find and fix new security flaws.<p>
1.12 deraadt 208:
1.288 matthieu 209: <a name="default"></a>
1.294 david 210: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 211:
212: To ensure that novice users of OpenBSD do not need to become security
213: experts overnight (a viewpoint which other vendors seem to have), we
214: ship the operating system in a Secure by Default mode. All non-essential
215: services are disabled. As the user/administrator becomes more familiar
216: with the system, he will discover that he has to enable daemons and other
217: parts of the system. During the process of learning how to enable a new
218: service, the novice is more likely to learn of security considerations.<p>
219:
220: This is in stark contrast to the increasing number of systems that
221: ship with NFS, mountd, web servers, and various other services enabled
222: by default, creating instantaneous security problems for their users
223: within minutes after their first install.<p>
224:
1.288 matthieu 225: <a name="crypto"></a>
1.294 david 226: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 227:
228: And of course, since the OpenBSD project is based in Canada, it is possible
229: for us to integrate cryptography. For more information, read the page
1.116 deraadt 230: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 231:
1.294 david 232: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 233:
234: <li>
1.378 jasper 235: <a name="46"></a>
236:
237: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
238: These are the OpenBSD 4.6 advisories -- all these problems are solved
239: in <a href=anoncvs.html>OpenBSD current</a> and the
240: <a href=stable.html>patch branch</a>.
241:
242: <p>
243: <ul>
1.380 ! landry 244: <li><a href="errata46.html#003_getsockopt">October 28, 2009:
! 245: getsockopt(2) with any of IP_AUTH_LEVEL, IP_ESP_TRANS_LEVEL, IP_ESP_NETWORK_LEVEL, IP_IPCOMP_LEVEL will crash the system.</a>
1.379 sthen 246: <li><a href="errata46.html#002_xmm">October 5, 2009:
247: XMM exceptions are not correctly handled resulting in a kernel panic.</a>
1.378 jasper 248: <li><a href="errata46.html#001_bind">July 29, 2009:
249: BIND's named could be made to crash with a specially crafted
250: dynamic update message to a zone for which the server is
251: master.</a>
252: </ul>
1.373 djm 253: <a name="45"></a>
254:
255: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
256: These are the OpenBSD 4.5 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>
1.378 jasper 262: <li><a href="errata45.html#007_bind">July 29, 2009:
263: BIND's named could be made to crash with a specially crafted
264: dynamic update message to a zone for which the server is
265: master.</a>
1.374 sthen 266: <li><a href="errata45.html#002_pf">April 11, 2009:
267: When pf attempts to perform translation on a specially
268: crafted IP datagram, a null pointer dereference will occur,
269: resulting in a kernel panic.</a>
1.373 djm 270: <li><a href="errata45.html#001_openssl">April 8, 2009:
271: OpenSSL's ASN.1 handling code could be forced to make invalid
272: memory accesses by certain invalid strings or structures, allowing
273: denial-of-service attacks.</a>
274: </ul>
275:
276: <li>
1.365 deraadt 277: <a name="44"></a>
278:
279: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
280: These are the OpenBSD 4.4 advisories -- all these problems are solved
281: in <a href=anoncvs.html>OpenBSD current</a> and the
282: <a href=stable.html>patch branch</a>.
283:
284: <p>
285: <ul>
1.378 jasper 286: <li><a href="errata44.html#014_bind">July 29, 2009:
287: BIND's named could be made to crash with a specially crafted
288: dynamic update message to a zone for which the server is
289: master.</a>
1.374 sthen 290: <li><a href="errata44.html#013_pf">April 11, 2009:
291: When pf attempts to perform translation on a specially
292: crafted IP datagram, a null pointer dereference will occur,
293: resulting in a kernel panic.</a>
1.373 djm 294: <li><a href="errata44.html#012_openssl">April 8, 2009:
295: OpenSSL's ASN.1 handling code could be forced to make invalid
296: memory accesses by certain invalid strings or structures, allowing
297: denial-of-service attacks.</a>
1.372 millert 298: <li><a href="errata44.html#011_sudo">February 22, 2009:
299: sudo(8) may allow a user listed in sudoers to run a command
300: as a different user than their access rule specifies when a Unix
301: group is used in the RunAs portion of the rule.</a>
1.370 djm 302: <li><a href="errata44.html#008_bind">January 15, 2009:
303: named(8) suffered from a similar logic error that may allow
304: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 305: <li><a href="errata44.html#007_openssl">January 9, 2009:
306: OpenSSL suffered from some logic errors that allowed bypass
307: of DSA/ECDSA certificate validation.</a>
1.367 brad 308: <li><a href="errata44.html#001_ndp">November 2, 2008:
309: The Neighbor Discovery Protocol (ndp) did not correctly verify
310: neighbor solicitation requests maybe allowing a nearby attacker
311: to intercept traffic.</a>
1.365 deraadt 312: </ul>
313:
1.375 miod 314: <p>
315: OpenBSD 4.3 and earlier releases are not supported anymore. The following
316: paragraphs only list advisories issued while they were maintained; these
317: releases are likely to be affected by the advisories for more recent releases.
318: <br>
319:
1.365 deraadt 320: <li>
1.357 brad 321: <a name="43"></a>
322:
323: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
324: These are the OpenBSD 4.3 advisories -- all these problems are solved
325: in <a href=anoncvs.html>OpenBSD current</a> and the
326: <a href=stable.html>patch branch</a>.
327:
328: <p>
329: <ul>
1.374 sthen 330: <li><a href="errata43.html#013_pf">April 11, 2009:
331: When pf attempts to perform translation on a specially
332: crafted IP datagram, a null pointer dereference will occur,
333: resulting in a kernel panic.</a>
1.373 djm 334: <li><a href="errata43.html#012_openssl">April 8, 2009:
335: OpenSSL's ASN.1 handling code could be forced to make invalid
336: memory accesses by certain invalid strings or structures, allowing
337: denial-of-service attacks.</a>
1.372 millert 338: <li><a href="errata43.html#011_sudo">February 22, 2009:
339: sudo(8) may allow a user listed in sudoers to run a command
340: as a different user than their access rule specifies when a Unix
341: group is used in the RunAs portion of the rule.</a>
1.370 djm 342: <li><a href="errata43.html#008_bind">January 15, 2009:
343: named(8) suffered from a similar logic error that may allow
344: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 345: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 346: OpenSSL suffered from some logic errors that allowed bypass
347: of DSA/ECDSA certificate validation.</a>
1.363 brad 348: <li><a href="errata43.html#005_ndp">October 2, 2008:
349: The Neighbor Discovery Protocol (ndp) did not correctly verify
350: neighbor solicitation requests maybe allowing a nearby attacker
351: to intercept traffic.</a>
1.362 brad 352: <li><a href="errata43.html#004_bind">July 23, 2008:
353: A vulnerability has been found with BIND.</a>
1.361 brad 354: <li><a href="errata43.html#003_xorg">July 15, 2008:
355: Multiple vulnerabilities in X.Org.</a>
1.359 brad 356: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 357: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 358: <li><a href="errata43.html#001_openssh">March 30, 2008:
359: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 360: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 361: </ul>
362:
363: <li>
1.348 merdely 364: <a name="42"></a>
365: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
366: These are the OpenBSD 4.2 advisories -- all these problems are solved
367: in <a href=anoncvs.html>OpenBSD current</a> and the
368: <a href=stable.html>patch branch</a>.
369:
370: <p>
371: <ul>
1.364 tobias 372: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 373: The Neighbor Discovery Protocol (ndp) did not correctly verify
374: neighbor solicitation requests maybe allowing a nearby attacker
375: to intercept traffic.</a>
1.362 brad 376: <li><a href="errata42.html#013_bind">July 23, 2008:
377: A vulnerability has been found with BIND.</a>
1.361 brad 378: <li><a href="errata42.html#012_xorg2">July 15, 2008:
379: Multiple vulnerabilities in X.Org.</a>
1.359 brad 380: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 381: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 382: <li><a href="errata42.html#010_openssh">March 30, 2008:
383: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 384: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 385: <li><a href="errata42.html#009_ppp">March 7, 2008:
386: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 387: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
388: Multiple vulnerabilities in X.Org.</a>
1.352 henning 389: <li><a href="errata42.html#005_ifrtlabel">Jan 11, 2008:
390: A missing NULL pointer check can lead to a kernel panic.</a>
391: <li><a href="errata42.html#004_pf">Nov 27, 2007:
392: A memory leak in pf can lead to machine lockups.</a>
1.351 okan 393: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
394: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 395: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 396: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 397: </ul>
398:
399: <li>
1.346 matthieu 400: <a name="41"></a>
401:
402: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
403: These are the OpenBSD 4.1 advisories -- all these problems are solved
404: in <a href=anoncvs.html>OpenBSD current</a> and the
405: <a href=stable.html>patch branch</a>.
406:
407: <p>
408: <ul>
1.359 brad 409: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 410: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 411: <li><a href="errata41.html#015_openssh">March 30, 2008:
412: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 413: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 414: <li><a href="errata41.html#014_ppp">March 7, 2008:
415: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 416: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
417: Multiple vulnerabilities in X.Org.</a>
418: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
419: The SSL_get_shared_ciphers() function in OpenSSL contains
420: an off-by-one overflow.</a>
1.350 deraadt 421: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 422: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 423: <li><a href="errata41.html#009_file">Jul 9, 2007:
424: Fix possible heap overflow in file(1).</a>
1.346 matthieu 425: <li><a href="errata41.html#005_route6">Apr 27, 2007:
426: IPv6 type 0 route headers can be used to mount a DoS attack
427: against hosts and networks.</a>
428: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
429: Multiple vulnerabilities in X.Org.</a>
430: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
431: Incorrect mbuf handling for ICMP6 packets.</a>
432: </ul>
433:
434: <li>
1.334 brad 435: <a name="40"></a>
436: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
437: These are the OpenBSD 4.0 advisories -- all these problems are solved
438: in <a href=anoncvs.html>OpenBSD current</a> and the
439: <a href=stable.html>patch branch</a>.
440:
441: <p>
442: <ul>
1.350 deraadt 443: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 444: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 445: <li><a href="errata40.html#015_file">Jul 9, 2007:
446: Fix possible heap overflow in file(1).</a>
1.343 deraadt 447: <li><a href="errata40.html#012_route6">Apr 23, 2007:
448: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 449: against hosts and networks.</a>
1.342 mbalmer 450: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
451: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 452: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
453: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 454: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 455: Insufficient validation in vga(4) may allow an attacker to gain
456: root privileges on some i386 systems.</a>
1.339 deraadt 457: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 458: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 459: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 460: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
461: found by Chris Evans.</a>
1.339 deraadt 462: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 463: Several problems have been found in OpenSSL.</a>
1.339 deraadt 464: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 465: httpd(8) does not sanitize the Expect header from an HTTP request
466: when it is reflected back in an error message, which might allow
467: cross-site scripting (XSS) style attacks.</a>
468: </ul>
469:
470: <li>
1.321 brad 471: <a name="39"></a>
472:
473: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
474: These are the OpenBSD 3.9 advisories -- all these problems are solved
475: in <a href=anoncvs.html>OpenBSD current</a> and the
476: <a href=stable.html>patch branch</a>.
477:
478: <p>
479: <ul>
1.343 deraadt 480: <li><a href="errata39.html#022_route6">Apr 23, 2007:
481: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 482: against hosts and networks.</a>
1.342 mbalmer 483: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
484: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 485: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
486: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 487: <li><a href="errata39.html#agp">Jan 3, 2007:
488: Insufficient validation in vga(4) may allow an attacker to gain
489: root privileges on some i386 systems.</a>
1.336 brad 490: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 491: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 492: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 493: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 494: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 495: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 496: found by Chris Evans.</a>
1.333 deraadt 497: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 498: Several problems have been found in OpenSSL.</a>
1.333 deraadt 499: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 500: httpd(8) does not sanitize the Expect header from an HTTP request
501: when it is reflected back in an error message, which might allow
502: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 503: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 504: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
505: possible for an attacker to construct an invalid signature which
506: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 507: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 508: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 509: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 510: Due to the failure to correctly validate LCP configuration option
511: lengths, it is possible for an attacker to send LCP packets via an
512: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 513: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 514: A problem in isakmpd(8) caused IPsec to run partly without replay
515: protection.</a>
1.333 deraadt 516: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 517: It is possible to cause the kernel to panic when more than the default
518: number of sempahores have been allocated.</a>
1.333 deraadt 519: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 520: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
521: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
522: option.</a>
1.333 deraadt 523: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 524: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 525: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 526: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
527: overflow.</a>
1.333 deraadt 528: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 529: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 530: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 531: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 532: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 533: A race condition has been reported to exist in the handling by sendmail
534: of asynchronous signals.</a>
535: </ul>
536:
537: <li>
1.318 deraadt 538: <a name="38"></a>
539:
540: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
541: These are the OpenBSD 3.8 advisories -- all these problems are solved
542: in <a href=anoncvs.html>OpenBSD current</a> and the
543: <a href=stable.html>patch branch</a>.
544:
545: <p>
546: <ul>
1.332 brad 547: <li><a href="errata38.html#ssh2">Oct 12, 2006:
548: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 549: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 550: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 551: found by Chris Evans.</a>
552: <li><a href="errata38.html#openssl2">Oct 7, 2006:
553: Several problems have been found in OpenSSL.</a>
554: <li><a href="errata38.html#httpd2">Oct 7, 2006:
555: httpd(8) does not sanitize the Expect header from an HTTP request
556: when it is reflected back in an error message, which might allow
557: cross-site scripting (XSS) style attacks.</a>
1.329 brad 558: <li><a href="errata38.html#openssl">Sep 8, 2006:
559: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
560: possible for an attacker to construct an invalid signature which
561: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 562: <li><a href="errata38.html#bind">Sep 8, 2006:
563: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 564: <li><a href="errata38.html#sppp">Sep 2, 2006:
565: Due to the failure to correctly validate LCP configuration option
566: lengths, it is possible for an attacker to send LCP packets via an
567: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 568: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
569: A problem in isakmpd(8) caused IPsec to run partly without replay
570: protection.</a>
571: <li><a href="errata38.html#sem">Aug 25, 2006:
572: It is possible to cause the kernel to panic when more than the default
573: number of sempahores have been allocated.</a>
574: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
575: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
576: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
577: option.</a>
578: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
579: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 580: <li><a href="errata38.html#httpd">Jul 30, 2006:
581: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
582: overflow.</a>
1.324 brad 583: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
584: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 585: <li><a href="errata38.html#xorg">May 2, 2006:
586: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 587: <li><a href="errata38.html#sendmail">Mar 25, 2006:
588: A race condition has been reported to exist in the handling by sendmail
589: of asynchronous signals.</a>
590: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 591: Josh Bressers has reported a weakness in OpenSSH caused due to the
592: insecure use of the system(3) function in scp(1) when performing copy
593: operations using filenames that are supplied by the user from the
594: command line.</a>
1.321 brad 595: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 596: Do not allow users to trick suid programs into re-opening files via
597: /dev/fd.</a>
1.321 brad 598: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 599: A buffer overflow has been found in the Perl interpreter with the
600: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 601: </ul>
602:
603: <li>
1.312 david 604: <a name="37"></a>
605:
606: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
607: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 608: in <a href="anoncvs.html">OpenBSD current</a>. The
609: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
610: you should update your machine.
1.312 david 611:
612: <p>
613: <ul>
1.322 brad 614: <li><a href="errata37.html#xorg">May 2, 2006:
615: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 616: <li><a href="errata37.html#sendmail">Mar 25, 2006:
617: A race condition has been reported to exist in the handling by sendmail
618: of asynchronous signals.</a>
1.320 brad 619: <li><a href="errata37.html#ssh">Feb 12, 2006:
620: Josh Bressers has reported a weakness in OpenSSH caused due to the
621: insecure use of the system(3) function in scp(1) when performing copy
622: operations using filenames that are supplied by the user from the
623: command line.</a>
1.319 brad 624: <li><a href="errata37.html#fd">Jan 5, 2006:
625: Do not allow users to trick suid programs into re-opening files via
626: /dev/fd.</a>
627: <li><a href="errata37.html#perl">Jan 5, 2006:
628: A buffer overflow has been found in the Perl interpreter with the
629: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 630: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 631: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 632: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 633: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 634: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 635: Fix a race condition in sudo(8) that could allow a user
1.315 millert 636: to run arbitrary commands.</a>
1.318 deraadt 637: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 638: Fix a buffer overflow, memory leaks, and NULL pointer
639: dereference in cvs(1).</a>
1.312 david 640: </ul>
641:
642: <li>
1.301 miod 643: <a name="36"></a>
644:
645: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
646: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 647: in <a href="anoncvs.html">OpenBSD current</a>. The
648: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
649: you should update your machine.
1.301 miod 650:
651: <p>
1.302 markus 652: <ul>
1.317 millert 653: <li><a href="errata36.html#libz2">Jul 21, 2005:
654: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 655: <li><a href="errata36.html#libz">Jul 6, 2005:
656: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 657: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 658: Fix a race condition in sudo(8) that could allow a user
1.315 millert 659: to run arbitrary commands.</a>
1.311 deraadt 660: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 661: Fix a buffer overflow, memory leaks, and NULL pointer
662: dereference in cvs(1).</a>
1.311 deraadt 663: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 664: Due to buffer overflows in telnet(1), a malicious
665: server or man-in-the-middle attack could allow
666: execution of arbitrary code with the privileges of
667: the user invoking telnet(1).</a>
1.311 deraadt 668: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 669: More stringent checking should be done in the copy(9)
670: functions to prevent their misuse.</a>
1.311 deraadt 671: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 672: More stringent checking should be done in the copy(9)
673: functions to prevent their misuse.</a>
1.311 deraadt 674: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 675: httpd(8)'s mod_include module fails to properly validate
676: the length of user supplied tag strings prior to copying
1.305 brad 677: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 678: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 679: On systems running isakmpd(8) it is possible for a local
680: user to cause kernel memory corruption and system panic by
1.303 markus 681: setting ipsec(4) credentials on a socket.</a>
1.302 markus 682: </ul>
1.301 miod 683:
684: <li>
1.288 matthieu 685: <a name="35"></a>
1.279 deraadt 686:
1.294 david 687: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 688: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 689: in <a href="anoncvs.html">OpenBSD current</a>. The
690: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
691: you should update your machine.
1.279 deraadt 692:
693: <p>
694: <ul>
1.310 brad 695: <li><a href="errata35.html#cvs4">Apr 28, 2005:
696: Fix a buffer overflow, memory leaks, and NULL pointer
697: dereference in cvs(1).</a>
1.309 brad 698: <li><a href="errata35.html#telnet">Mar 30, 2005:
699: Due to buffer overflows in telnet(1), a malicious
700: server or man-in-the-middle attack could allow
701: execution of arbitrary code with the privileges of
702: the user invoking telnet(1).</a>
1.308 brad 703: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 704: More stringent checking should be done in the copy(9)
705: functions to prevent their misuse.</a>
1.306 brad 706: <li><a href="errata35.html#locore">Feb 28, 2005:
707: More stringent checking should be done in the copy(9)
708: functions to prevent their misuse.</a>
1.304 brad 709: <li><a href="errata35.html#httpd3">Jan 12, 2005:
710: httpd(8)'s mod_include module fails to properly validate
711: the length of user supplied tag strings prior to copying
1.305 brad 712: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 713: <li><a href="errata35.html#pfkey">Dec 14, 2004:
714: On systems running isakmpd(8) it is possible for a local
715: user to cause kernel memory corruption and system panic by
1.303 markus 716: setting ipsec(4) credentials on a socket.</a>
1.301 miod 717: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 718: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 719: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 720: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 721: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 722: httpd(8)'s mod_rewrite module can be made to write one zero byte in
723: an arbitrary memory position outside of a char array, causing a DoS
724: or possibly buffer overflows.</a>
1.301 miod 725: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 726: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 727: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 728: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 729: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 730: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 731: Multiple remote vulnerabilities have been found in the cvs(1)
732: server which can be used by CVS clients to crash or execute
1.293 brad 733: arbitrary code on the server.</a>
1.301 miod 734: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 735: kdc(8) performs inadequate checking of request fields, leading
736: to the possibility of principal impersonation from other
737: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 738: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 739: xdm(1) ignores the requestPort resource and creates a
1.293 brad 740: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 741: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 742: A buffer overflow in the cvs(1) server has been found,
743: which can be used by CVS clients to execute arbitrary code on
1.293 brad 744: the server.</a>
1.301 miod 745: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 746: Integer overflow problems were found in procfs, allowing
1.293 brad 747: reading of arbitrary kernel memory.</a>
1.301 miod 748: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 749: Pathname validation problems have been found in cvs(1),
750: allowing clients and servers access to files outside the
1.293 brad 751: repository or local CVS tree.</a>
1.279 deraadt 752: </ul>
753:
754: <p>
755: <li>
1.288 matthieu 756: <a name="34"></a>
1.261 david 757:
1.294 david 758: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 759: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 760: in <a href="anoncvs.html">OpenBSD current</a>. The
761: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
762: you should update your machine.
1.261 david 763: <p>
764: <ul>
1.302 markus 765: <li><a href="errata34.html#pfkey">Dec 14, 2004:
766: On systems running isakmpd(8) it is possible for a local
767: user to cause kernel memory corruption and system panic by
1.303 markus 768: setting ipsec(4) credentials on a socket.</a>
1.298 brad 769: <li><a href="errata34.html#xpm">Sep 16, 2004:
770: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 771: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
772: httpd(8)'s mod_rewrite module can be made to write one zero byte in
773: an arbitrary memory position outside of a char array, causing a DoS
774: or possibly buffer overflows.</a>
1.294 david 775: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 776: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 777: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 778: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 779: an attacker can delete IPsec tunnels at will.</a>
1.294 david 780: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 781: Multiple remote vulnerabilities have been found in the cvs(1)
782: server which can be used by CVS clients to crash or execute
1.293 brad 783: arbitrary code on the server.</a>
1.294 david 784: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 785: kdc(8) performs inadequate checking of request fields, leading
786: to the possibility of principal impersonation from other
787: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 788: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 789: A buffer overflow in the cvs(1) server has been found,
790: which can be used by CVS clients to execute arbitrary code on
791: the server.</a>
1.294 david 792: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 793: Integer overflow problems were found in procfs, allowing
794: reading of arbitrary kernel memory.</a>
1.294 david 795: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 796: Pathname validation problems have been found in cvs(1),
797: allowing clients and servers access to files outside the
798: repository or local CVS tree.</a>
1.294 david 799: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 800: A missing check for a NULL-pointer dereference may allow a
1.281 otto 801: remote attacker to crash applications using OpenSSL.</a>
1.294 david 802: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 803: Defects in the payload validation and processing functions of
804: isakmpd have been discovered. An attacker could send malformed
805: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 806: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 807: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
808: access module, using IP addresses without a netmask on big endian
809: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 810: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 811: An IPv6 MTU handling problem exists that could be used by an
812: attacker to cause a denial of service attack.</a>
1.294 david 813: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 814: A reference counting bug in shmat(2) could be used to write to
815: kernel memory under certain circumstances.</a>
1.294 david 816: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 817: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 818: by Thomas Walpuski.</a>
1.294 david 819: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 820: It may be possible for a local user to overrun the stack in
821: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 822: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 823: The use of certain ASN.1 encodings or malformed public keys may
824: allow an attacker to mount a denial of service attack against
825: applications linked with ssl(3).</a>
1.261 david 826: </ul>
827:
828: <li>
1.288 matthieu 829: <a name="33"></a>
1.246 deraadt 830:
1.294 david 831: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 832: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 833: in <a href="anoncvs.html">OpenBSD current</a>. The
834: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 835: you should update your machine.
1.246 deraadt 836: <p>
837: <ul>
1.294 david 838: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 839: Pathname validation problems have been found in cvs(1),
840: allowing clients and servers access to files outside the
841: repository or local CVS tree.</a>
1.294 david 842: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 843: A missing check for a NULL-pointer dereference may allow a
1.281 otto 844: remote attacker to crash applications using OpenSSL.</a>
1.294 david 845: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 846: Defects in the payload validation and processing functions of
847: isakmpd have been discovered. An attacker could send malformed
848: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 849: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 850: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
851: access module, using IP addresses without a netmask on big endian
852: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 853: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 854: An IPv6 MTU handling problem exists that could be used by an
855: attacker to cause a denial of service attack.</a>
1.294 david 856: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 857: A reference counting bug in shmat(2) could be used to write to
858: kernel memory under certain circumstances.</a>
1.294 david 859: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 860: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 861: by Thomas Walpuski.</a>
1.294 david 862: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 863: It may be possible for a local user to execute arbitrary code
864: resulting in escalation of privileges due to a stack overrun
865: in compat_ibcs2(8).</a>
1.294 david 866: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 867: The use of certain ASN.1 encodings or malformed public keys may
868: allow an attacker to mount a denial of service attack against
869: applications linked with ssl(3).</a>
1.294 david 870: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 871: Access of freed memory in pf(4) could be used to
1.260 margarid 872: remotely panic a machine using scrub rules.</a>
1.294 david 873: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 874: A buffer overflow in the address parsing in
875: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 876: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 877: OpenSSH versions prior to 3.7 contains a buffer management error
878: that is potentially exploitable.</a>
1.294 david 879: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 880: Root may be able to reduce the security level by taking advantage of
881: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 882: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 883: An improper bounds check in the kernel may allow a local user
884: to panic the kernel.</a>
1.294 david 885: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 886: An off-by-one error exists in the C library function realpath(3)
887: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 888: </ul>
889:
1.265 miod 890:
1.247 david 891: <p>
1.246 deraadt 892: <li>
1.288 matthieu 893: <a name="32"></a>
1.224 deraadt 894:
1.294 david 895: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 896: These are the OpenBSD 3.2 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 3.2 is no longer being maintained,
1.265 miod 899: you should update your machine.
1.224 deraadt 900: <p>
901: <ul>
1.294 david 902: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 903: The use of certain ASN.1 encodings or malformed public keys may
904: allow an attacker to mount a denial of service attack against
905: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 906: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 907: Access of freed memory in pf(4) could be used to
1.260 margarid 908: remotely panic a machine using scrub rules.</a>
1.294 david 909: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 910: A buffer overflow in the address parsing in
911: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 912: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 913: OpenSSH versions prior to 3.7 contains a buffer management error
914: that is potentially exploitable.</a>
1.294 david 915: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 916: Fix for a potential security issue in
917: sendmail(8) with respect to DNS maps.</a>
1.294 david 918: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 919: An off-by-one error exists in the C library function realpath(3)
920: may allow an attacker to gain escalated privileges.</a>
1.294 david 921: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 922: A buffer overflow in the address parsing in
923: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 924: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 925: A cryptographic weaknesses in the Kerberos v4 protocol can be
926: exploited on Kerberos v5 as well.</a>
1.294 david 927: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 928: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 929: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 930: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 931: Various SSL and TLS operations in OpenSSL are vulnerable to
932: timing attacks.</a>
1.294 david 933: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 934: A buffer overflow in lprm(1) may allow an attacker to elevate
935: privileges to user daemon.</a>.
1.294 david 936: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 937: A buffer overflow in the envelope comments processing in
938: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 939: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 940: httpd(8) leaks file inode numbers via ETag header as well as
941: child PIDs in multipart MIME boundary generation. This could
942: lead, for example, to NFS exploitation because it uses inode
943: numbers as part of the file handle.</a>
1.294 david 944: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 945: In ssl(8) an information leak can occur via timing by performing
946: a MAC computation even if incorrect block cipher padding has
947: been found, this is a countermeasure. Also, check for negative
948: sizes, in allocation routines.</a>
1.294 david 949: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 950: A double free exists in cvs(1) that could lead to privilege
951: escalation for cvs configurations where the cvs command is
1.233 margarid 952: run as a privileged user.</a>
1.294 david 953: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 954: A buffer overflow exists in named(8) that could lead to a
955: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 956: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 957: A logic error in the pool kernel memory allocator could cause
958: memory corruption in low-memory situations, causing the system
959: to crash.</a>
1.294 david 960: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 961: An attacker can bypass smrsh(8)'s restrictions and execute
962: arbitrary commands with the privileges of his own account.</a>
1.294 david 963: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 964: Network bridges running pf with scrubbing enabled could cause
965: mbuf corruption, causing the system to crash.</a>
1.294 david 966: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 967: A buffer overflow can occur in the kadmind(8) daemon, leading
968: to possible remote crash or exploit.</a>
1.224 deraadt 969: </ul>
970:
1.227 miod 971: <p>
972: <li>
1.288 matthieu 973: <a name="31"></a>
1.203 deraadt 974:
1.294 david 975: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 976: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 977: in <a href="anoncvs.html">OpenBSD current</a>. The
978: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 979: you should update your machine.
1.203 deraadt 980:
981: <p>
982: <ul>
1.294 david 983: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 984: A buffer overflow in the address parsing in
985: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 986: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 987: A cryptographic weaknesses in the Kerberos v4 protocol can be
988: exploited on Kerberos v5 as well.</a>
1.294 david 989: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 990: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 991: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 992: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 993: Various SSL and TLS operations in OpenSSL are vulnerable to
994: timing attacks.</a>
1.294 david 995: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 996: A buffer overflow in lprm(1) may allow an attacker to gain
997: root privileges.</a>
1.294 david 998: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 999: A buffer overflow in the envelope comments processing in
1000: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1001: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1002: In ssl(8) an information leak can occur via timing by performing
1003: a MAC computation even if incorrect block cipher padding has
1004: been found, this is a countermeasure. Also, check for negative
1005: sizes, in allocation routines.</a>
1.294 david 1006: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1007: A double free exists in cvs(1) that could lead to privilege
1008: escalation for cvs configurations where the cvs command is
1.294 david 1009: run as a privileged user</a>.
1010: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1011: A buffer overflow exists in named(8) that could lead to a
1012: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1013: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1014: Incorrect argument checking in the getitimer(2) system call
1015: may allow an attacker to crash the system.</a>
1.294 david 1016: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1017: An attacker can bypass smrsh(8)'s restrictions and execute
1018: arbitrary commands with the privileges of his own account.</a>
1.294 david 1019: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1020: A buffer overflow can occur in the kadmind(8) daemon, leading
1021: to possible remote crash or exploit.</a>
1.294 david 1022: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1023: Incorrect argument checking in the setitimer(2) system call
1024: may allow an attacker to write to kernel memory.</a>
1.294 david 1025: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1026: An insufficient boundary check in the select system call
1.220 miod 1027: allows an attacker to overwrite kernel memory and execute arbitrary code
1028: in kernel context.</a>
1.294 david 1029: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1030: Several remote buffer overflows can occur in the SSL2 server and SSL3
1031: client of the ssl(8) library, as in the ASN.1 parser code in the
1032: crypto(3) library, all of them being potentially remotely
1033: exploitable.</a>
1.294 david 1034: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1035: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1036: possible remote crash.</a>
1.294 david 1037: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1038: A race condition exists in the pppd(8) daemon which may cause it to
1039: alter the file permissions of an arbitrary file.</a>
1.294 david 1040: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1041: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1042: crash.</a>
1.294 david 1043: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1044: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1045: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1046: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1047: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1048: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1049: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1050: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1051: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1052: input validation error that can result in an integer overflow and
1053: privilege escalation.</a>
1.294 david 1054: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1055: A buffer overflow can occur during the interpretation of chunked
1056: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1057: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1058: Under certain conditions, on systems using YP with netgroups
1059: in the password database, it is possible that sshd(8) does
1060: ACL checks for the requested user name but uses the password
1061: database entry of a different user for authentication. This
1062: means that denied users might authenticate successfully
1063: while permitted users could be locked out.</a>
1.294 david 1064: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1065: A race condition exists that could defeat the kernel's
1066: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1067: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1068: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1069: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1070: A local user can gain super-user privileges due to a buffer
1071: overflow in sshd(8) if AFS has been configured on the system
1072: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1073: in the sshd_config file.</a>
1.203 deraadt 1074: </ul>
1075:
1.235 miod 1076: <p>
1.203 deraadt 1077: <li>
1.288 matthieu 1078: <a name="30"></a>
1.187 deraadt 1079:
1.294 david 1080: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1081: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1082: in <a href="anoncvs.html">OpenBSD current</a>. The
1083: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1084: you should update your machine.
1.187 deraadt 1085:
1086: <p>
1087: <ul>
1.294 david 1088: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1089: A buffer overflow exists in named(8) that could lead to a
1090: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1091: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1092: Incorrect argument checking in the getitimer(2) system call
1093: may allow an attacker to crash the system.</a>
1.294 david 1094: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1095: An attacker can bypass smrsh(8)'s restrictions and execute
1096: arbitrary commands with the privileges of his own account.</a>
1.294 david 1097: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1098: A buffer overflow can occur in the kadmind(8) daemon, leading
1099: to possible remote crash or exploit.</a>
1.294 david 1100: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1101: Incorrect argument checking in the setitimer(2) system call
1102: may allow an attacker to write to kernel memory.</a>
1.294 david 1103: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1104: An insufficient boundary check in the select and poll system calls
1105: allows an attacker to overwrite kernel memory and execute arbitrary code
1106: in kernel context.</a>
1.294 david 1107: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1108: Several remote buffer overflows can occur in the SSL2 server and SSL3
1109: client of the ssl(8) library, as in the ASN.1 parser code in the
1110: crypto(3) library, all of them being potentially remotely
1111: exploitable.</a>
1.294 david 1112: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1113: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1114: possible remote crash.</a>
1.294 david 1115: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1116: A race condition exists in the pppd(8) daemon which may cause it to
1117: alter the file permissions of an arbitrary file.</a>
1.294 david 1118: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1119: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1120: crash.</a>
1.294 david 1121: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1122: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1123: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1124: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1125: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1126: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1127: input validation error that can result in an integer overflow and
1128: privilege escalation.</a>
1.294 david 1129: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1130: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1131: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1132: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1133: A buffer overflow can occur during the interpretation of chunked
1134: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1135: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1136: A race condition exists that could defeat the kernel's
1137: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1138: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1139: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1140: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1141: A local user can gain super-user privileges due to a buffer
1142: overflow in sshd(8) if AFS has been configured on the system
1143: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1144: in the sshd_config file.</a>
1.294 david 1145: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1146: The mail(1) was interpreting tilde escapes even when invoked
1147: in non-interactive mode. As mail(1) is called as root from cron,
1148: this can lead to a local root compromise.</a>
1.294 david 1149: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1150: Under certain conditions, on systems using YP with netgroups in
1151: the password database, it is possible for the rexecd(8) and rshd(8)
1152: daemons to execute a shell from a password database entry for a
1153: different user. Similarly, atrun(8) may change to the wrong
1154: home directory when running jobs.</a>
1.294 david 1155: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1156: A potential double free() exists in the zlib library;
1157: this is not exploitable on OpenBSD.
1158: The kernel also contains a copy of zlib; it is not
1159: currently known if the kernel zlib is exploitable.</a>
1.294 david 1160: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1161: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1162: may allow a local user to gain super-user privileges.</a>
1.294 david 1163: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1164: A race condition between the ptrace(2) and execve(2) system calls
1165: allows an attacker to modify the memory contents of suid/sgid
1166: processes which could lead to compromise of the super-user account.</a>
1.294 david 1167: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1168: There is a security hole in sudo(8) that can be exploited
1169: when the Postfix sendmail replacement is installed that may
1170: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1171: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1172: An attacker can trick a machine running the lpd daemon into
1173: creating new files in the root directory from a machine with
1174: remote line printer access.</a>
1.294 david 1175: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1176: The vi.recover script can be abused in such a way as
1177: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1178: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1179: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1180: resulting in a crash.</a>
1.294 david 1181: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1182: A security hole that may allow an attacker to partially authenticate
1183: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1184: </ul>
1185:
1186: <p>
1187: <li>
1.288 matthieu 1188: <a name="29"></a>
1.173 deraadt 1189:
1.294 david 1190: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1191: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1192: in <a href="anoncvs.html">OpenBSD current</a>. The
1193: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1194: you should update your machine.
1195:
1.173 deraadt 1196:
1197: <p>
1198: <ul>
1.294 david 1199: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1200: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1201: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1202: A race condition exists that could defeat the kernel's
1203: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1204: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1205: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1206: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1207: A local user can gain super-user privileges due to a buffer
1208: overflow in sshd(8) if AFS has been configured on the system
1209: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1210: in the sshd_config file.</a>
1.294 david 1211: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1212: The mail(1) was interpreting tilde escapes even when invoked
1213: in non-interactive mode. As mail(1) is called as root from cron,
1214: this can lead to a local root compromise.</a>
1.294 david 1215: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1216: A potential double free() exists in the zlib library;
1217: this is not exploitable on OpenBSD.
1218: The kernel also contains a copy of zlib; it is not
1219: currently known if the kernel zlib is exploitable.</a>
1.294 david 1220: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1221: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1222: may allow a local user to gain super-user privileges.</a>
1.294 david 1223: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1224: A race condition between the ptrace(2) and execve(2) system calls
1225: allows an attacker to modify the memory contents of suid/sgid
1226: processes which could lead to compromise of the super-user account.</a>
1.294 david 1227: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1228: There is a security hole in sudo(8) that can be exploited
1229: when the Postfix sendmail replacement is installed that may
1230: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1231: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1232: An attacker can trick a machine running the lpd daemon into
1233: creating new files in the root directory from a machine with
1234: remote line printer access.</a>
1.294 david 1235: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1236: The vi.recover script can be abused in such a way as
1237: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1238: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1239: A security hole exists in uuxqt(8) that may allow an
1240: attacker to gain root privileges.</a>
1.294 david 1241: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1242: A security hole exists in lpd(8) that may allow an
1243: attacker to gain root privileges if lpd is running.</a>
1.294 david 1244: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1245: A security hole exists in sendmail(8) that may allow an
1246: attacker on the local host to gain root privileges.</a>
1.294 david 1247: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1248: A kernel buffer overflow in the NFS code can be used to execute
1249: arbitrary code by users with mount privileges (only root by
1.181 millert 1250: default).</a>
1.294 david 1251: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1252: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1253: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1254: sshd(8) allows users to delete arbitrary files named "cookies"
1255: if X11 forwarding is enabled. X11 forwarding is disabled
1256: by default.</a>
1.294 david 1257: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1258: Programs using the fts routines can be tricked into changing
1259: into the wrong directory.</a>
1.294 david 1260: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1261: Sendmail signal handlers contain unsafe code,
1262: leading to numerous race conditions.</a>
1.173 deraadt 1263: </ul>
1264:
1265: <p>
1266: <li>
1.288 matthieu 1267: <a name="28"></a>
1.152 deraadt 1268:
1.294 david 1269: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1270: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1271: in <a href="anoncvs.html">OpenBSD current</a>. The
1272: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1273: you should update your machine.
1274:
1.152 deraadt 1275:
1276: <p>
1277: <ul>
1.294 david 1278: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1279: A security hole exists in uuxqt(8) that may allow an
1280: attacker to gain root privileges.</a>
1.294 david 1281: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1282: A security hole exists in lpd(8) that may allow an
1283: attacker to gain root privileges if lpd is running.</a>
1.294 david 1284: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1285: A security hole exists in sendmail(8) that may allow an
1286: attacker on the local host to gain root privileges.</a>
1.294 david 1287: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1288: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1289: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1290: Programs using the fts routines can be tricked into changing
1291: into the wrong directory.</a>
1.294 david 1292: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1293: Sendmail signal handlers contain unsafe code,
1294: leading to numerous race conditions.</a>
1.294 david 1295: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1296: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1297: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1298: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1299: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1300: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1301: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1302: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1303: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1304: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1305: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1306: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1307: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1308: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1309: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1310: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1311: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1312: rnd(4) did not use all of its input when written to.</a>
1.294 david 1313: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1314: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1315: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1316: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1317: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1318: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1319: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1320: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1321: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1322: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1323: </ul>
1324:
1325: <p>
1326: <li>
1.288 matthieu 1327: <a name="27"></a>
1.124 deraadt 1328:
1.294 david 1329: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1330: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1331: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1332: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1333:
1334: <p>
1335: <ul>
1.294 david 1336: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1337: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1338: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1339: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1340: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1341: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1342: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1343: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1344: (patch included)</a>
1.294 david 1345: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1346: X11 libraries have 2 potential overflows in xtrans code.
1347: (patch included)</a>
1.294 david 1348: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1349: Apache mod_rewrite and mod_vhost_alias modules could expose files
1350: on the server in certain configurations if used.
1351: (patch included)</a>
1.294 david 1352: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1353: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1354: TERMPATH and TERMCAP environment variables as it should.
1355: (patch included)</a>
1.294 david 1356: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1357: There are printf-style format string bugs in several privileged
1358: programs. (patch included)</a>
1.294 david 1359: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1360: libcurses honored terminal descriptions in the $HOME/.terminfo
1361: directory as well as in the TERMCAP environment variable for
1362: setuid and setgid applications.
1.146 deraadt 1363: (patch included)</a>
1.294 david 1364: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1365: A format string vulnerability exists in talkd(8).
1366: (patch included)</a>
1.294 david 1367: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1368: A format string vulnerability exists in the pw_error() function of the
1369: libutil library, yielding localhost root through chpass(1).
1370: (patch included)</a>
1.294 david 1371: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1372: Bad ESP/AH packets could cause a crash under certain conditions.
1373: (patch included)</a>
1.294 david 1374: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1375: A format string vulnerability (localhost root) exists in xlock(1).
1376: (patch included)</a>
1.294 david 1377: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1378: Various bugs found in X11 libraries have various side effects, almost
1379: completely denial of service in OpenBSD.
1380: (patch included)</a>
1.294 david 1381: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1382: Just like pretty much all the other unix ftp daemons
1383: on the planet, ftpd had a remote root hole in it.
1384: Luckily, ftpd was not enabled by default.
1.137 deraadt 1385: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1386: (patch included)</a>
1.294 david 1387: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1388: Mopd, very rarely used, contained some buffer overflows.
1389: (patch included)</a>
1.294 david 1390: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1391: libedit would check for a <b>.editrc</b> file in the current
1392: directory. Not known to be a real security issue, but a patch
1393: is available anyways.
1394: (patch included)</a>
1.294 david 1395: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1396: A serious bug in dhclient(8) could allow strings from a
1397: malicious dhcp server to be executed in the shell as root.
1398: (patch included)</a>
1.294 david 1399: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1400: A serious bug in isakmpd(8) policy handling wherein
1401: policy verification could be completely bypassed in isakmpd.
1402: (patch included)</a>
1.294 david 1403: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1404: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1405: should not be used, and results in security problems on
1406: other operating systems.</a>
1.294 david 1407: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1408: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1409: (patch included)</a>
1.294 david 1410: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1411: Improper use of ipf <i>keep-state</i> rules can result
1412: in firewall rules being bypassed. (patch included)</a>
1413:
1.124 deraadt 1414: </ul>
1415:
1416: <p>
1417: <li>
1.288 matthieu 1418: <a name="26"></a>
1.119 deraadt 1419:
1.294 david 1420: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1421: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1422: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1423: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1424:
1425: <p>
1426: <ul>
1.294 david 1427: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1428: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1429: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1430: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1431: Improper use of ipf <i>keep-state</i> rules can result
1432: in firewall rules being bypassed. (patch included)</a>
1.294 david 1433: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1434: xlockmore has a bug which a localhost attacker can use to gain
1435: access to the encrypted root password hash (which is normally
1.245 miod 1436: encoded using blowfish</a> (see
1.294 david 1437: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1438: crypt(3)</a>)
1.245 miod 1439: (patch included).
1.294 david 1440: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1441: Systems running with procfs enabled and mounted are
1442: vulnerable to a very tricky exploit. procfs is not
1443: mounted by default.
1444: (patch included).</a>
1.294 david 1445: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1446: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1447: thus exposing the system to a race where the aliases file
1448: did not exist.
1.119 deraadt 1449: (patch included).</a>
1.294 david 1450: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1451: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1452: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1453: A buffer overflow in the RSAREF code included in the
1454: USA version of libssl, is possibly exploitable in
1455: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1456: (patch included).<br></a>
1457: <strong>Update:</strong> Turns out that this was not exploitable
1458: in any of the software included in OpenBSD 2.6.
1.294 david 1459: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1460: Any user could change interface media configurations, resulting in
1461: a localhost denial of service attack.
1.121 deraadt 1462: (patch included).</a>
1.119 deraadt 1463: </ul>
1464:
1465: <p>
1466: <li>
1.288 matthieu 1467: <a name="25"></a>
1.106 deraadt 1468:
1.294 david 1469: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1470: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1471: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1472: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1473:
1.96 deraadt 1474: <p>
1.104 deraadt 1475: <ul>
1.294 david 1476: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1477: In cron(8), make sure argv[] is NULL terminated in the
1478: fake popen() and run sendmail as the user, not as root.
1479: (patch included).</a>
1.294 david 1480: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1481: filesystems had an overrun in their handling of uio_offset
1482: in their readdir() routines. (These filesystems are not
1483: enabled by default). (patch included).</a>
1.294 david 1484: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1485: when we execve() a new process. (patch included).</a>
1.294 david 1486: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1487: been handled by IPsec may be transmitted as cleartext.
1488: PF_KEY SA expirations may leak kernel resources.
1489: (patch included).</a>
1.294 david 1490: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1491: motd re-writing and change the find(1) to use -execdir
1492: (patch included).</a>
1.294 david 1493: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1494: users to chflags(2) or fchflags(2) on character or block devices
1495: which they may currently be the owner of (patch included).</a>
1.294 david 1496: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1497: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1498: </ul>
1499:
1.106 deraadt 1500: <p>
1501: <li>
1.288 matthieu 1502: <a name="24"></a>
1.235 miod 1503:
1.294 david 1504: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1505: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1506: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1507: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1508:
1.96 deraadt 1509: <p>
1.75 deraadt 1510: <ul>
1.294 david 1511: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1512: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1513: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1514: another kernel crash case caused by the <strong>crashme</strong>
1515: program (patch included).</a>
1.294 david 1516: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1517: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1518: (patch included).</a>
1.294 david 1519: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1520: existed in ping(8). (patch included).</a>
1.294 david 1521: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1522: the ipq, which could permit an attacker to cause a crash.
1523: (patch included).</a>
1.294 david 1524: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1525: kernel between accept(2) and select(2) could permit an attacker
1526: to hang sockets from remote.
1527: (patch included).</a>
1.294 david 1528: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1529: bog the machine excessively and cause problems.
1530: (patch included).</a>
1.294 david 1531: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1532: DDB interacted to possibly cause a crash.
1533: (patch included).</a>
1.294 david 1534: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1535: (patch included).</a>
1.294 david 1536: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1537: problem in bootpd(8). (patch included).</a>
1.294 david 1538: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1539: exploitable problem relating to environment variables in termcap
1540: and curses. (patch included).</a>
1.294 david 1541: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1542: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1543: </ul>
1544:
1.106 deraadt 1545: <p>
1546: <li>
1.288 matthieu 1547: <a name="23"></a>
1.235 miod 1548:
1.294 david 1549: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1550: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1551: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1552: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1553:
1.96 deraadt 1554: <p>
1.53 matthieu 1555: <ul>
1.294 david 1556: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1557: problem in bootpd(8). (patch included).</a>
1.294 david 1558: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1559: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1560: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1561: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1562: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1563: chpass(1) has a file descriptor leak which allows an
1564: attacker to modify /etc/master.passwd.</a>
1.294 david 1565: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1566: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1567: should not be executed with fd slots 0, 1, or 2 free.
1568: (patch included).</a>
1.294 david 1569: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1570: libraries (patches included).</a>
1.294 david 1571: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1572: processes too permissive (4th revision patch included).</a>
1.294 david 1573: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1574: of immutable and append-only file flags. (patch included).</a>
1.294 david 1575: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1576: if IPSEC is enabled (patch included).</a>
1.294 david 1577: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1578: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1579: </ul>
1.9 deraadt 1580:
1.106 deraadt 1581: <p>
1582: <li>
1.288 matthieu 1583: <a name="22"></a>
1.235 miod 1584:
1.294 david 1585: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1586: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1587: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1588: still exist in other operating systems. (The supplied patches are for
1589: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1590:
1.96 deraadt 1591: <p>
1.9 deraadt 1592: <ul>
1.294 david 1593: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1594: packets if IPSEC is enabled (patch included).</a>
1.294 david 1595: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1596: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1597: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1598: (patch included).</a>
1.294 david 1599: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1600: (patch included).</a>
1.294 david 1601: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1602: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1603: (patch included).</a>
1.294 david 1604: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1605: export (patch included).</a>
1.112 philen 1606: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1607: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1608: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1609: Acceptance.</a>
1.294 david 1610: A patch is available <a href="errata22.html#sourceroute">here</a>.
1611: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1612: flaw (patch included).</a>
1.294 david 1613: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1614: </ul>
1615:
1.106 deraadt 1616: <p>
1617: <li>
1.288 matthieu 1618: <a name="21"></a>
1.235 miod 1619:
1.294 david 1620: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1621: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1622: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1623: exist in other operating systems. (If you are running OpenBSD 2.1, we
1624: would strongly recommend an upgrade to the newest release, as this
1625: patch list only attempts at fixing the most important security
1626: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1627: security problems. Many of those problems were solved in ways which
1628: make it hard for us to provide patches).
1629:
1.96 deraadt 1630: <p>
1.52 deraadt 1631: <ul>
1.112 philen 1632: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1633: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1634: (patch included)</a>
1.112 philen 1635: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1636: </ul>
1.51 deraadt 1637:
1.106 deraadt 1638: <p>
1639: <li>
1.288 matthieu 1640: <a name="20"></a>
1.235 miod 1641:
1.294 david 1642: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1643: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1644: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1645: exist in other operating systems. (If you are running OpenBSD 2.0, we
1646: commend you for being there back in the old days!, but you're really
1647: missing out if you don't install a new version!)
1648:
1649: <p>
1650: <ul>
1.112 philen 1651: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1652: resolver (patch included)</a>
1653: <li>Many others... if people can hunt them down, please let me know
1654: and we'll put them up here.
1655: </ul>
1.51 deraadt 1656: <p>
1.106 deraadt 1657:
1.288 matthieu 1658: <a name="watching"></a>
1.294 david 1659: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1660:
1.21 deraadt 1661: Since we take a proactive stance with security, we are continually
1662: finding and fixing new security problems. Not all of these problems
1.80 espie 1663: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1664: confirmed to be exploitable; many simple bugs we fix do turn out to
1665: have security consequences we could not predict. We do not have the
1666: time resources to make these changes available in the above format.<p>
1.21 deraadt 1667:
1668: Thus there are usually minor security fixes in the current source code
1669: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1670: guarantee that these problems are of minimal impact and unproven
1.44 ian 1671: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1672: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1673:
1.45 deraadt 1674: People who are really concerned with security can do a number of
1675: things:<p>
1.21 deraadt 1676:
1677: <ul>
1678: <li>If you understand security issues, watch our
1.294 david 1679: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1680: eye out for things which appear security related. Since
1.21 deraadt 1681: exploitability is not proven for many of the fixes we make,
1682: do not expect the relevant commit message to say "SECURITY FIX!".
1683: If a problem is proven and serious, a patch will be available
1684: here very shortly after.
1.161 horacio 1685: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1686: security-announce mailing list</a> which will notify you for every
1.186 ian 1687: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1688: and instruct you on how to patch the problem.
1.21 deraadt 1689: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1690: complete system build from time to time (read /usr/src/Makefile
1691: carefully). Users can make the assumption that the current
1692: source tree always has stronger security than the previous release.
1.45 deraadt 1693: However, building your own system from source code is not trivial;
1.265 miod 1694: it is nearly 600MB of source code, and problems do occur as we
1.45 deraadt 1695: transition between major releases.
1.115 ericj 1696: <li>Install a binary snapshot for your
1.80 espie 1697: architecture, which are made available fairly often. For
1.29 deraadt 1698: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1699: </ul>
1700:
1.9 deraadt 1701: <p>
1.288 matthieu 1702: <a name="reporting"></a>
1.294 david 1703: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1704:
1.5 deraadt 1705: <p> If you find a new security problem, you can mail it to
1.294 david 1706: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1707: <br>
1.5 deraadt 1708: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1709: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1710:
1.107 deraadt 1711: <p>
1.288 matthieu 1712: <a name="papers"></a>
1.294 david 1713: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1714:
1715: A number of papers have been written by OpenBSD team members, about security
1716: related changes they have done in OpenBSD. The postscript versions of these
1.108 deraadt 1717: documents are available as follows.<p>
1.107 deraadt 1718:
1719: <ul>
1.113 deraadt 1720: <li>A Future-Adaptable Password Scheme.<br>
1.294 david 1721: <a href="events.html#usenix99">Usenix 1999</a>,
1722: by <a href="mailto:provos@openbsd.org">Niels Provos</a>,
1723: <a href="mailto:dm@openbsd.org">David Mazieres</a>.<br>
1724: <a href="papers/bcrypt-paper.ps">paper</a> and
1725: <a href="papers/bcrypt-slides.ps">slides</a>.
1.113 deraadt 1726: <p>
1727: <li>Cryptography in OpenBSD: An Overview.<br>
1.294 david 1728: <a href="events.html#usenix99">Usenix 1999</a>,
1729: by <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>,
1730: <a href="mailto:niklas@openbsd.org">Niklas Hallqvist</a>,
1731: <a href="mailto:art@openbsd.org">Artur Grabowski</a>,
1732: <a href="mailto:angelos@openbsd.org">Angelos D. Keromytis</a>,
1733: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1734: <a href="papers/crypt-paper.ps">paper</a> and
1735: <a href="papers/crypt-slides.ps">slides</a>.
1.113 deraadt 1736: <p>
1737: <li>strlcpy and strlcat -- consistent, safe, string copy and concatenation.<br>
1.294 david 1738: <a href="events.html#usenix99">Usenix 1999</a>,
1739: by <a href="mailto:millert@openbsd.org">Todd C. Miller</a>,
1740: <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>.<br>
1741: <a href="papers/strlcpy-paper.ps">paper</a> and
1742: <a href="papers/strlcpy-slides.ps">slides</a>.
1.113 deraadt 1743: <p>
1.118 deraadt 1744: <li>Dealing with Public Ethernet Jacks-Switches, Gateways, and Authentication.<br>
1.294 david 1745: <a href="events.html#lisa99">LISA 1999</a>,
1746: by <a href="mailto:beck@openbsd.org">Bob Beck</a>.<br>
1747: <a href="papers/authgw-paper.ps">paper</a> and
1748: <a href="papers/authgw-slides.ps">slides</a>.
1.118 deraadt 1749: <p>
1.153 jufi 1750: <li>Encrypting Virtual Memory<br>
1.294 david 1751: <a href="events.html#sec2000">Usenix Security 2000</a>,
1752: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1753: <a href="papers/swapencrypt.ps">paper</a> and
1754: <a href="papers/swapencrypt-slides.ps">slides</a>.
1.142 deraadt 1755: <p>
1.107 deraadt 1756: </ul>
1.294 david 1757: </ul>
1.106 deraadt 1758:
1.2 deraadt 1759: <hr>
1.294 david 1760: <a href="index.html"><img height=24 width=24 src="back.gif" border=0 alt="OpenBSD"></a>
1761: <a href="mailto:www@openbsd.org">www@openbsd.org</a>
1.24 deraadt 1762: <br>
1.380 ! landry 1763: <small>$OpenBSD: security.html,v 1.379 2009/10/23 15:28:13 sthen Exp $</small>
1.1 deraadt 1764:
1.24 deraadt 1765: </body>
1766: </html>
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