Annotation of www/security.html, Revision 1.407
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1.106 deraadt 17: <p>
1.294 david 18: <h2><font color="#e00000">Security</font></h2>
19: <hr>
1.1 deraadt 20:
1.406 deraadt 21: For security advisories for specific releases, click below:
1.294 david 22: <p>
1.406 deraadt 23:
1.225 deraadt 24: <a href="#20">2.0</a>,
25: <a href="#21">2.1</a>,
26: <a href="#22">2.2</a>,
27: <a href="#23">2.3</a>,
28: <a href="#24">2.4</a>,
29: <a href="#25">2.5</a>,
30: <a href="#26">2.6</a>,
31: <a href="#27">2.7</a>,
32: <a href="#28">2.8</a>,
33: <a href="#29">2.9</a>,
34: <a href="#30">3.0</a>,
35: <a href="#31">3.1</a>,
1.246 deraadt 36: <a href="#32">3.2</a>,
1.261 david 37: <a href="#33">3.3</a>,
1.387 miod 38: <a href="#34">3.4</a>,
1.388 miod 39: <a href="#35">3.5</a>,
1.406 deraadt 40: <a href="#36">3.6</a>,
1.365 deraadt 41: <br>
1.318 deraadt 42: <a href="#37">3.7</a>,
1.321 brad 43: <a href="#38">3.8</a>,
1.334 brad 44: <a href="#39">3.9</a>,
1.348 merdely 45: <a href="#40">4.0</a>,
46: <a href="#41">4.1</a>,
1.357 brad 47: <a href="#42">4.2</a>,
1.365 deraadt 48: <a href="#43">4.3</a>,
1.377 tobias 49: <a href="#44">4.4</a>,
1.378 jasper 50: <a href="#45">4.5</a>,
1.385 jasper 51: <a href="#46">4.6</a>,
1.387 miod 52: <a href="#47">4.7</a>,
53: <a href="#48">4.8</a>,
1.390 sthen 54: <a href="#49">4.9</a>,
55: <a href="#50">5.0</a>,
1.394 lum 56: <a href="#51">5.1</a>,
1.395 sthen 57: <a href="#52">5.2</a>,
1.398 sthen 58: <a href="#53">5.3</a>,
1.406 deraadt 59: <br>
1.405 deraadt 60: <a href="#54">5.4</a>,
61: <a href="#55">5.5</a>.
1.406 deraadt 62: <br>
1.56 deraadt 63: <hr>
64:
1.294 david 65: <a name="goals"></a>
1.278 deraadt 66: <ul>
1.406 deraadt 67: <li><h3><font color="#e00000">Goals</font></h3><p>
1.22 deraadt 68:
1.14 deraadt 69: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 70: ONE in the industry for security (if we are not already there). Our
71: open software development model permits us to take a more
72: uncompromising view towards increased security than Sun, SGI, IBM, HP,
73: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 74: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 75: cryptography</a>, we are able to take cryptographic approaches towards
76: fixing security problems.<p>
1.18 deraadt 77:
1.288 matthieu 78: <a name="disclosure"></a>
1.294 david 79: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 80:
1.45 deraadt 81: Like many readers of the
1.196 jufi 82: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 83: BUGTRAQ mailing list</a>,
1.106 deraadt 84: we believe in full disclosure of security problems. In the
85: operating system arena, we were probably the first to embrace
86: the concept. Many vendors, even of free software, still try
87: to hide issues from their users.<p>
88:
89: Security information moves very fast in cracker circles. On the other
90: hand, our experience is that coding and releasing of proper security
91: fixes typically requires about an hour of work -- very fast fix
92: turnaround is possible. Thus we think that full disclosure helps the
93: people who really care about security.<p>
94:
1.288 matthieu 95: <a name="process"></a>
1.294 david 96: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 97:
1.12 deraadt 98: Our security auditing team typically has between six and twelve
1.45 deraadt 99: members who continue to search for and fix new security holes. We
100: have been auditing since the summer of 1996. The process we follow to
101: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 102: every critical software component. We are not so much looking for
103: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 104: years later someone discovers the problem used to be a security
1.106 deraadt 105: issue, and we fixed it because it was just a bug, well, all the
106: better. Flaws have been found in just about every area of the system.
107: Entire new classes of security problems have been found during our
108: audit, and often source code which had been audited earlier needs
109: re-auditing with these new flaws in mind. Code often gets audited
110: multiple times, and by multiple people with different auditing
111: skills.<p>
1.12 deraadt 112:
1.94 deraadt 113: Some members of our security auditing team worked for Secure Networks,
114: the company that made the industry's premier network security scanning
115: software package Ballista (Secure Networks got purchased by Network
116: Associates, Ballista got renamed to Cybercop Scanner, and well...)
117: That company did a lot of security research, and thus fit in well
1.106 deraadt 118: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
119: colours since day 1.<p>
1.31 deraadt 120:
1.34 deraadt 121: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 122: In most cases we have found that the determination of exploitability
123: is not an issue. During our ongoing auditing process we find many
124: bugs, and endeavor to fix them even though exploitability is not
125: proven. We fix the bug, and we move on to find other bugs to fix. We
126: have fixed many simple and obvious careless programming errors in code
127: and only months later discovered that the problems were in fact
128: exploitable. (Or, more likely someone on
1.197 jufi 129: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 130: would report that other operating systems were vulnerable to a `newly
131: discovered problem', and then it would be discovered that OpenBSD had
132: been fixed in a previous release). In other cases we have been saved
133: from full exploitability of complex step-by-step attacks because we
134: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 135: managed such a success is the lpd advisory that Secure Networks put out.
136: <p>
1.29 deraadt 137:
1.288 matthieu 138: <a name="newtech"></a>
1.294 david 139: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 140:
141: As we audit source code, we often invent new ways of solving problems.
142: Sometimes these ideas have been used before in some random application
143: written somewhere, but perhaps not taken to the degree that we do.
144: <p>
145:
146: <ul>
147: <li>strlcpy() and strlcat()
148: <li>Memory protection purify
149: <ul>
150: <li>W^X
151: <li>.rodata segment
152: <li>Guard pages
153: <li>Randomized malloc()
154: <li>Randomized mmap()
155: <li>atexit() and stdio protection
156: </ul>
1.295 otto 157: <li>Privilege separation
1.278 deraadt 158: <li>Privilege revocation
159: <li>Chroot jailing
160: <li>New uids
161: <li>ProPolice
162: <li>... and others
163: </ul>
164: <p>
165:
1.294 david 166: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 167:
1.45 deraadt 168: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 169: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 170: commonplace in security forums like
1.197 jufi 171: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 172:
1.45 deraadt 173: The most intense part of our security auditing happened immediately
1.80 espie 174: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 175: over the last third of 1996 and first half of 1997. Thousands (yes,
176: thousands) of security issues were fixed rapidly over this year-long
177: period; bugs like the standard buffer overflows, protocol
178: implementation weaknesses, information gathering, and filesystem
179: races. Hence most of the security problems that we encountered were
180: fixed before our 2.1 release, and then a far smaller number needed
181: fixing for our 2.2 release. We do not find as many problems anymore,
182: it is simply a case of diminishing returns. Recently the security
183: problems we find and fix tend to be significantly more obscure or
184: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 185:
1.35 deraadt 186: <ul>
1.45 deraadt 187: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 188: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 189: to search for more complicated exploits, so we will too.
190: <li>Finding and fixing subtle flaws in complicated software is
191: a lot of fun.
1.35 deraadt 192: </ul>
1.106 deraadt 193: <p>
1.15 deraadt 194:
1.14 deraadt 195: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 196: to find and fix new security flaws.<p>
1.12 deraadt 197:
1.288 matthieu 198: <a name="default"></a>
1.294 david 199: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 200:
201: To ensure that novice users of OpenBSD do not need to become security
202: experts overnight (a viewpoint which other vendors seem to have), we
203: ship the operating system in a Secure by Default mode. All non-essential
204: services are disabled. As the user/administrator becomes more familiar
205: with the system, he will discover that he has to enable daemons and other
206: parts of the system. During the process of learning how to enable a new
207: service, the novice is more likely to learn of security considerations.<p>
208:
209: This is in stark contrast to the increasing number of systems that
210: ship with NFS, mountd, web servers, and various other services enabled
211: by default, creating instantaneous security problems for their users
212: within minutes after their first install.<p>
213:
1.288 matthieu 214: <a name="crypto"></a>
1.294 david 215: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 216:
217: And of course, since the OpenBSD project is based in Canada, it is possible
218: for us to integrate cryptography. For more information, read the page
1.116 deraadt 219: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 220:
1.294 david 221: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 222:
1.407 ! deraadt 223: <li><a name="55"></a>
! 224: <h3><font color="#e00000">OpenBSD 5.5 Security Advisories</font></h3>
! 225: These are the OpenBSD 5.5 advisories -- all these problems are solved
! 226: in <a href=anoncvs.html>OpenBSD current</a> and the
! 227: <a href=stable.html>patch branch</a>.
! 228: <p>
! 229:
! 230: <ul>
! 231: <li><a href="errata55.html#001_icmp">March 15, 2014:
! 232: Memory corruption happens during
! 233: ICMP reflection handling. ICMP reflection is disabled by default.</a>
! 234: </ul>
1.398 sthen 235:
1.407 ! deraadt 236: <li><a name="54"></a>
1.398 sthen 237: <h3><font color="#e00000">OpenBSD 5.4 Security Advisories</font></h3>
238: These are the OpenBSD 5.4 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>
244: <li><a href="errata54.html#002_sshgcm">November 7, 2013:
245: Memory corruption in post-authentication sshd process if AES-GCM cipher
246: is selected</a>
247: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
248: <li><a href="errata54.html#004_nginx">November 21, 2013:
249: Security restriction bypass in certain nginx(8) configurations</a>
250: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 251: <li><a href="errata54.html#006_libXfont">January 10, 2014:
1.400 matthieu 252: Buffer overflow in parsing of BDF font files</a>
1.401 matthieu 253: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.398 sthen 254: </ul>
255:
1.407 ! deraadt 256: <li><a name="53"></a>
1.395 sthen 257: <h3><font color="#e00000">OpenBSD 5.3 Security Advisories</font></h3>
258: These are the OpenBSD 5.3 advisories -- all these problems are solved
259: in <a href=anoncvs.html>OpenBSD current</a> and the
260: <a href=stable.html>patch branch</a>.
261:
262: <p>
263: <ul>
1.398 sthen 264: <li><a href="errata53.html#009_sshgcm">November 7, 2013:
265: Memory corruption in post-authentication sshd process if AES-GCM cipher
266: is selected</a>
267: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
268: <li><a href="errata53.html#011_nginx">November 21, 2013:
269: Security restriction bypass in certain nginx(8) configurations</a>
270: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 271: <li><a href="errata53.html#013_libXfont">January 10, 2014:
1.402 matthieu 272: Buffer overflow in parsing of BDF font files</a>
273: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.395 sthen 274: </ul>
275:
1.399 deraadt 276: <br><p><b>
277: OpenBSD 5.2 and earlier releases are not supported anymore. The following
278: paragraphs only list advisories issued while they were maintained; these
279: releases are likely to be affected by the advisories for more recent releases.
1.407 ! deraadt 280: </b>
! 281: <p>
1.399 deraadt 282:
1.395 sthen 283: <li>
1.393 sthen 284: <a name="52"></a>
285:
286: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
287: These are the OpenBSD 5.2 advisories -- all these problems are solved
288: in <a href=anoncvs.html>OpenBSD current</a> and the
289: <a href=stable.html>patch branch</a>.
290:
291: <p>
292: <ul>
293: None yet!
294: </ul>
295:
296: <li>
1.390 sthen 297: <a name="51"></a>
298:
299: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
300: These are the OpenBSD 5.1 advisories -- all these problems are solved
301: in <a href=anoncvs.html>OpenBSD current</a> and the
302: <a href=stable.html>patch branch</a>.
303:
304: <p>
305: <ul>
1.393 sthen 306: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
307: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 308: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 309: </ul>
310:
311: <li>
1.388 miod 312: <a name="50"></a>
313:
314: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
315: These are the OpenBSD 5.0 advisories -- all these problems are solved
316: in <a href=anoncvs.html>OpenBSD current</a> and the
317: <a href=stable.html>patch branch</a>.
318:
319: <p>
320: <ul>
1.393 sthen 321: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
322: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 323: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 324: </ul>
325:
326: <li>
1.387 miod 327: <a name="49"></a>
328:
329: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
330: These are the OpenBSD 4.9 advisories -- all these problems are solved
331: in <a href=anoncvs.html>OpenBSD current</a> and the
332: <a href=stable.html>patch branch</a>.
333:
334: <p>
335: <ul>
336: None yet!
337: </ul>
338:
339: <li>
340: <a name="48"></a>
341:
342: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
343: These are the OpenBSD 4.8 advisories -- all these problems are solved
344: in <a href=anoncvs.html>OpenBSD current</a> and the
345: <a href=stable.html>patch branch</a>.
346:
347: <p>
348: <ul>
349: <li><a href="errata48.html#009_pf">February 16, 2011:
350: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
351: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
352: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
353: prefixes "10.1.1.1/30") are not affected.</a>
354: <li><a href="errata48.html#008_openssl">February 11, 2011:
355: An incorrectly formatted ClientHello handshake message could cause
356: OpenSSL to parse past the end of the message. An attacker could use
357: this flaw to trigger an invalid memory access, causing a crash of an
358: application linked to OpenSSL. As well, certain applications may expose
359: the contents of parsed OCSP extensions, specifically the OCSP nonce
360: extension.
361: <br>
362: Applications are only affected if they act as a server and call
363: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
364: that nothing in the base OS uses this. Apache httpd started using this
365: in v2.3.3; this is newer than the version in ports.</a>
366: <li><a href="errata48.html#005_pf">December 17, 2010:
367: Insufficent initialization of the pf rule structure in the ioctl
368: handler may allow userland to modify kernel memory. By default root
369: privileges are needed to add or modify pf rules.</a>
370: </ul>
371:
372: <li>
1.385 jasper 373: <a name="47"></a>
374:
375: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
376: These are the OpenBSD 4.7 advisories -- all these problems are solved
377: in <a href=anoncvs.html>OpenBSD current</a> and the
378: <a href=stable.html>patch branch</a>.
379:
380: <p>
381: <ul>
1.387 miod 382: <li><a href="errata47.html#013_pf">February 16, 2011:
383: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
384: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
385: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
386: prefixes "10.1.1.1/30") are not affected.</a>
387: <li><a href="errata47.html#012_openssl">February 11, 2011:
388: An incorrectly formatted ClientHello handshake message could cause
389: OpenSSL to parse past the end of the message. An attacker could use
390: this flaw to trigger an invalid memory access, causing a crash of an
391: application linked to OpenSSL. As well, certain applications may expose
392: the contents of parsed OCSP extensions, specifically the OCSP nonce
393: extension.
394: <br>
395: Applications are only affected if they act as a server and call
396: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
397: that nothing in the base OS uses this. Apache httpd started using this
398: in v2.3.3; this is newer than the version in ports.</a>
399: <li><a href="errata47.html#009_pf">December 17, 2010:
400: Insufficent initialization of the pf rule structure in the ioctl
401: handler may allow userland to modify kernel memory. By default root
402: privileges are needed to add or modify pf rules.</a>
403: <li><a href="errata47.html#004_pfsync">April 23, 2010:
404: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 405: <li><a href="errata47.html#003_openssl">April 14, 2010:
406: In TLS connections, certain incorrectly formatted records can
407: cause an OpenSSL client or server to crash due to a read
1.392 tobias 408: attempt at NULL.</a>
1.385 jasper 409: </ul>
410:
411: <li>
1.378 jasper 412: <a name="46"></a>
413:
414: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
415: These are the OpenBSD 4.6 advisories -- all these problems are solved
416: in <a href=anoncvs.html>OpenBSD current</a> and the
417: <a href=stable.html>patch branch</a>.
418:
419: <p>
420: <ul>
1.385 jasper 421: <li><a href="errata46.html#010_openssl">April 14, 2010:
422: In TLS connections, certain incorrectly formatted records can
423: cause an OpenSSL client or server to crash due to a read
1.392 tobias 424: attempt at NULL.</a>
1.384 jasper 425: <li><a href="errata46.html#006_openssl">March 12, 2010:
426: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 427: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 428: <li><a href="errata46.html#004_openssl">November 26, 2009:
429: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 430: related to renegotiation.</a>
1.378 jasper 431: </ul>
1.382 tobias 432:
433: <li>
1.373 djm 434: <a name="45"></a>
435:
436: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
437: These are the OpenBSD 4.5 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>
1.385 jasper 443: <li><a href="errata45.html#016_openssl">April 14, 2010:
444: In TLS connections, certain incorrectly formatted records can
445: cause an OpenSSL client or server to crash due to a read
1.392 tobias 446: attempt at NULL.</a>
1.385 jasper 447: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 448: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 449: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 450: <li><a href="errata45.html#010_openssl">November 26, 2009:
451: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 452: related to renegotiation.</a>
1.373 djm 453: </ul>
454:
455: <li>
1.365 deraadt 456: <a name="44"></a>
457:
458: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
459: These are the OpenBSD 4.4 advisories -- all these problems are solved
460: in <a href=anoncvs.html>OpenBSD current</a> and the
461: <a href=stable.html>patch branch</a>.
462:
463: <p>
464: <ul>
1.372 millert 465: <li><a href="errata44.html#011_sudo">February 22, 2009:
466: sudo(8) may allow a user listed in sudoers to run a command
467: as a different user than their access rule specifies when a Unix
468: group is used in the RunAs portion of the rule.</a>
1.370 djm 469: <li><a href="errata44.html#008_bind">January 15, 2009:
470: named(8) suffered from a similar logic error that may allow
471: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 472: <li><a href="errata44.html#007_openssl">January 9, 2009:
473: OpenSSL suffered from some logic errors that allowed bypass
474: of DSA/ECDSA certificate validation.</a>
1.367 brad 475: <li><a href="errata44.html#001_ndp">November 2, 2008:
476: The Neighbor Discovery Protocol (ndp) did not correctly verify
477: neighbor solicitation requests maybe allowing a nearby attacker
478: to intercept traffic.</a>
1.365 deraadt 479: </ul>
480:
481: <li>
1.357 brad 482: <a name="43"></a>
483:
484: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
485: These are the OpenBSD 4.3 advisories -- all these problems are solved
486: in <a href=anoncvs.html>OpenBSD current</a> and the
487: <a href=stable.html>patch branch</a>.
488:
489: <p>
490: <ul>
1.372 millert 491: <li><a href="errata43.html#011_sudo">February 22, 2009:
492: sudo(8) may allow a user listed in sudoers to run a command
493: as a different user than their access rule specifies when a Unix
494: group is used in the RunAs portion of the rule.</a>
1.370 djm 495: <li><a href="errata43.html#008_bind">January 15, 2009:
496: named(8) suffered from a similar logic error that may allow
497: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 498: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 499: OpenSSL suffered from some logic errors that allowed bypass
500: of DSA/ECDSA certificate validation.</a>
1.382 tobias 501: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 502: The Neighbor Discovery Protocol (ndp) did not correctly verify
503: neighbor solicitation requests maybe allowing a nearby attacker
504: to intercept traffic.</a>
1.362 brad 505: <li><a href="errata43.html#004_bind">July 23, 2008:
506: A vulnerability has been found with BIND.</a>
1.361 brad 507: <li><a href="errata43.html#003_xorg">July 15, 2008:
508: Multiple vulnerabilities in X.Org.</a>
1.359 brad 509: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 510: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 511: <li><a href="errata43.html#001_openssh">March 30, 2008:
512: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 513: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 514: </ul>
515:
516: <li>
1.348 merdely 517: <a name="42"></a>
518: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
519: These are the OpenBSD 4.2 advisories -- all these problems are solved
520: in <a href=anoncvs.html>OpenBSD current</a> and the
521: <a href=stable.html>patch branch</a>.
522:
523: <p>
524: <ul>
1.364 tobias 525: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 526: The Neighbor Discovery Protocol (ndp) did not correctly verify
527: neighbor solicitation requests maybe allowing a nearby attacker
528: to intercept traffic.</a>
1.362 brad 529: <li><a href="errata42.html#013_bind">July 23, 2008:
530: A vulnerability has been found with BIND.</a>
1.361 brad 531: <li><a href="errata42.html#012_xorg2">July 15, 2008:
532: Multiple vulnerabilities in X.Org.</a>
1.359 brad 533: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 534: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 535: <li><a href="errata42.html#010_openssh">March 30, 2008:
536: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 537: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 538: <li><a href="errata42.html#009_ppp">March 7, 2008:
539: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 540: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
541: Multiple vulnerabilities in X.Org.</a>
1.351 okan 542: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
543: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 544: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 545: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 546: </ul>
547:
548: <li>
1.346 matthieu 549: <a name="41"></a>
550:
551: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
552: These are the OpenBSD 4.1 advisories -- all these problems are solved
553: in <a href=anoncvs.html>OpenBSD current</a> and the
554: <a href=stable.html>patch branch</a>.
555:
556: <p>
557: <ul>
1.359 brad 558: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 559: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 560: <li><a href="errata41.html#015_openssh">March 30, 2008:
561: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 562: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 563: <li><a href="errata41.html#014_ppp">March 7, 2008:
564: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 565: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
566: Multiple vulnerabilities in X.Org.</a>
567: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
568: The SSL_get_shared_ciphers() function in OpenSSL contains
569: an off-by-one overflow.</a>
1.350 deraadt 570: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 571: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 572: <li><a href="errata41.html#009_file">Jul 9, 2007:
573: Fix possible heap overflow in file(1).</a>
1.346 matthieu 574: <li><a href="errata41.html#005_route6">Apr 27, 2007:
575: IPv6 type 0 route headers can be used to mount a DoS attack
576: against hosts and networks.</a>
577: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
578: Multiple vulnerabilities in X.Org.</a>
579: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
580: Incorrect mbuf handling for ICMP6 packets.</a>
581: </ul>
582:
583: <li>
1.334 brad 584: <a name="40"></a>
585: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
586: These are the OpenBSD 4.0 advisories -- all these problems are solved
587: in <a href=anoncvs.html>OpenBSD current</a> and the
588: <a href=stable.html>patch branch</a>.
589:
590: <p>
591: <ul>
1.382 tobias 592: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
593: The SSL_get_shared_ciphers() function in OpenSSL contains an
594: off-by-one overflow.</a>
1.350 deraadt 595: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 596: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 597: <li><a href="errata40.html#015_file">Jul 9, 2007:
598: Fix possible heap overflow in file(1).</a>
1.343 deraadt 599: <li><a href="errata40.html#012_route6">Apr 23, 2007:
600: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 601: against hosts and networks.</a>
1.342 mbalmer 602: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
603: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 604: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
605: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 606: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 607: Insufficient validation in vga(4) may allow an attacker to gain
608: root privileges on some i386 systems.</a>
1.339 deraadt 609: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 610: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 611: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 612: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
613: found by Chris Evans.</a>
1.339 deraadt 614: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 615: Several problems have been found in OpenSSL.</a>
1.339 deraadt 616: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 617: httpd(8) does not sanitize the Expect header from an HTTP request
618: when it is reflected back in an error message, which might allow
619: cross-site scripting (XSS) style attacks.</a>
620: </ul>
621:
622: <li>
1.321 brad 623: <a name="39"></a>
624:
625: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
626: These are the OpenBSD 3.9 advisories -- all these problems are solved
627: in <a href=anoncvs.html>OpenBSD current</a> and the
628: <a href=stable.html>patch branch</a>.
629:
630: <p>
631: <ul>
1.343 deraadt 632: <li><a href="errata39.html#022_route6">Apr 23, 2007:
633: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 634: against hosts and networks.</a>
1.342 mbalmer 635: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
636: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 637: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
638: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 639: <li><a href="errata39.html#agp">Jan 3, 2007:
640: Insufficient validation in vga(4) may allow an attacker to gain
641: root privileges on some i386 systems.</a>
1.336 brad 642: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 643: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 644: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 645: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 646: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 647: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 648: found by Chris Evans.</a>
1.333 deraadt 649: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 650: Several problems have been found in OpenSSL.</a>
1.333 deraadt 651: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 652: httpd(8) does not sanitize the Expect header from an HTTP request
653: when it is reflected back in an error message, which might allow
654: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 655: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 656: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
657: possible for an attacker to construct an invalid signature which
658: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 659: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 660: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 661: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 662: Due to the failure to correctly validate LCP configuration option
663: lengths, it is possible for an attacker to send LCP packets via an
664: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 665: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 666: A problem in isakmpd(8) caused IPsec to run partly without replay
667: protection.</a>
1.333 deraadt 668: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 669: It is possible to cause the kernel to panic when more than the default
670: number of sempahores have been allocated.</a>
1.333 deraadt 671: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 672: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
673: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
674: option.</a>
1.333 deraadt 675: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 676: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 677: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 678: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
679: overflow.</a>
1.333 deraadt 680: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 681: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 682: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 683: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 684: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 685: A race condition has been reported to exist in the handling by sendmail
686: of asynchronous signals.</a>
687: </ul>
688:
689: <li>
1.318 deraadt 690: <a name="38"></a>
691:
692: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
693: These are the OpenBSD 3.8 advisories -- all these problems are solved
694: in <a href=anoncvs.html>OpenBSD current</a> and the
695: <a href=stable.html>patch branch</a>.
696:
697: <p>
698: <ul>
1.332 brad 699: <li><a href="errata38.html#ssh2">Oct 12, 2006:
700: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 701: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 702: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 703: found by Chris Evans.</a>
704: <li><a href="errata38.html#openssl2">Oct 7, 2006:
705: Several problems have been found in OpenSSL.</a>
706: <li><a href="errata38.html#httpd2">Oct 7, 2006:
707: httpd(8) does not sanitize the Expect header from an HTTP request
708: when it is reflected back in an error message, which might allow
709: cross-site scripting (XSS) style attacks.</a>
1.329 brad 710: <li><a href="errata38.html#openssl">Sep 8, 2006:
711: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
712: possible for an attacker to construct an invalid signature which
713: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 714: <li><a href="errata38.html#bind">Sep 8, 2006:
715: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 716: <li><a href="errata38.html#sppp">Sep 2, 2006:
717: Due to the failure to correctly validate LCP configuration option
718: lengths, it is possible for an attacker to send LCP packets via an
719: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 720: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
721: A problem in isakmpd(8) caused IPsec to run partly without replay
722: protection.</a>
723: <li><a href="errata38.html#sem">Aug 25, 2006:
724: It is possible to cause the kernel to panic when more than the default
725: number of sempahores have been allocated.</a>
726: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
727: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
728: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
729: option.</a>
730: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
731: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 732: <li><a href="errata38.html#httpd">Jul 30, 2006:
733: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
734: overflow.</a>
1.324 brad 735: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
736: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 737: <li><a href="errata38.html#xorg">May 2, 2006:
738: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 739: <li><a href="errata38.html#sendmail">Mar 25, 2006:
740: A race condition has been reported to exist in the handling by sendmail
741: of asynchronous signals.</a>
742: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 743: Josh Bressers has reported a weakness in OpenSSH caused due to the
744: insecure use of the system(3) function in scp(1) when performing copy
745: operations using filenames that are supplied by the user from the
746: command line.</a>
1.321 brad 747: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 748: Do not allow users to trick suid programs into re-opening files via
749: /dev/fd.</a>
1.321 brad 750: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 751: A buffer overflow has been found in the Perl interpreter with the
752: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 753: </ul>
754:
755: <li>
1.312 david 756: <a name="37"></a>
757:
758: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
759: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 760: in <a href="anoncvs.html">OpenBSD current</a>. The
761: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
762: you should update your machine.
1.312 david 763:
764: <p>
765: <ul>
1.322 brad 766: <li><a href="errata37.html#xorg">May 2, 2006:
767: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 768: <li><a href="errata37.html#sendmail">Mar 25, 2006:
769: A race condition has been reported to exist in the handling by sendmail
770: of asynchronous signals.</a>
1.320 brad 771: <li><a href="errata37.html#ssh">Feb 12, 2006:
772: Josh Bressers has reported a weakness in OpenSSH caused due to the
773: insecure use of the system(3) function in scp(1) when performing copy
774: operations using filenames that are supplied by the user from the
775: command line.</a>
1.319 brad 776: <li><a href="errata37.html#fd">Jan 5, 2006:
777: Do not allow users to trick suid programs into re-opening files via
778: /dev/fd.</a>
779: <li><a href="errata37.html#perl">Jan 5, 2006:
780: A buffer overflow has been found in the Perl interpreter with the
781: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 782: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 783: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 784: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 785: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 786: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 787: Fix a race condition in sudo(8) that could allow a user
1.315 millert 788: to run arbitrary commands.</a>
1.318 deraadt 789: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 790: Fix a buffer overflow, memory leaks, and NULL pointer
791: dereference in cvs(1).</a>
1.312 david 792: </ul>
793:
794: <li>
1.301 miod 795: <a name="36"></a>
796:
797: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
798: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 799: in <a href="anoncvs.html">OpenBSD current</a>. The
800: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
801: you should update your machine.
1.301 miod 802:
803: <p>
1.302 markus 804: <ul>
1.317 millert 805: <li><a href="errata36.html#libz2">Jul 21, 2005:
806: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 807: <li><a href="errata36.html#libz">Jul 6, 2005:
808: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 809: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 810: Fix a race condition in sudo(8) that could allow a user
1.315 millert 811: to run arbitrary commands.</a>
1.311 deraadt 812: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 813: Fix a buffer overflow, memory leaks, and NULL pointer
814: dereference in cvs(1).</a>
1.311 deraadt 815: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 816: Due to buffer overflows in telnet(1), a malicious
817: server or man-in-the-middle attack could allow
818: execution of arbitrary code with the privileges of
819: the user invoking telnet(1).</a>
1.311 deraadt 820: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 821: More stringent checking should be done in the copy(9)
822: functions to prevent their misuse.</a>
1.311 deraadt 823: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 824: More stringent checking should be done in the copy(9)
825: functions to prevent their misuse.</a>
1.311 deraadt 826: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 827: httpd(8)'s mod_include module fails to properly validate
828: the length of user supplied tag strings prior to copying
1.305 brad 829: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 830: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 831: On systems running isakmpd(8) it is possible for a local
832: user to cause kernel memory corruption and system panic by
1.303 markus 833: setting ipsec(4) credentials on a socket.</a>
1.302 markus 834: </ul>
1.301 miod 835:
836: <li>
1.288 matthieu 837: <a name="35"></a>
1.279 deraadt 838:
1.294 david 839: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 840: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 841: in <a href="anoncvs.html">OpenBSD current</a>. The
842: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
843: you should update your machine.
1.279 deraadt 844:
845: <p>
846: <ul>
1.310 brad 847: <li><a href="errata35.html#cvs4">Apr 28, 2005:
848: Fix a buffer overflow, memory leaks, and NULL pointer
849: dereference in cvs(1).</a>
1.309 brad 850: <li><a href="errata35.html#telnet">Mar 30, 2005:
851: Due to buffer overflows in telnet(1), a malicious
852: server or man-in-the-middle attack could allow
853: execution of arbitrary code with the privileges of
854: the user invoking telnet(1).</a>
1.308 brad 855: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 856: More stringent checking should be done in the copy(9)
857: functions to prevent their misuse.</a>
1.306 brad 858: <li><a href="errata35.html#locore">Feb 28, 2005:
859: More stringent checking should be done in the copy(9)
860: functions to prevent their misuse.</a>
1.304 brad 861: <li><a href="errata35.html#httpd3">Jan 12, 2005:
862: httpd(8)'s mod_include module fails to properly validate
863: the length of user supplied tag strings prior to copying
1.305 brad 864: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 865: <li><a href="errata35.html#pfkey">Dec 14, 2004:
866: On systems running isakmpd(8) it is possible for a local
867: user to cause kernel memory corruption and system panic by
1.303 markus 868: setting ipsec(4) credentials on a socket.</a>
1.301 miod 869: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 870: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 871: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 872: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 873: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 874: httpd(8)'s mod_rewrite module can be made to write one zero byte in
875: an arbitrary memory position outside of a char array, causing a DoS
876: or possibly buffer overflows.</a>
1.301 miod 877: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 878: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 879: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 880: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 881: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 882: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 883: Multiple remote vulnerabilities have been found in the cvs(1)
884: server which can be used by CVS clients to crash or execute
1.293 brad 885: arbitrary code on the server.</a>
1.301 miod 886: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 887: kdc(8) performs inadequate checking of request fields, leading
888: to the possibility of principal impersonation from other
889: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 890: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 891: xdm(1) ignores the requestPort resource and creates a
1.293 brad 892: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 893: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 894: A buffer overflow in the cvs(1) server has been found,
895: which can be used by CVS clients to execute arbitrary code on
1.293 brad 896: the server.</a>
1.301 miod 897: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 898: Integer overflow problems were found in procfs, allowing
1.293 brad 899: reading of arbitrary kernel memory.</a>
1.301 miod 900: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 901: Pathname validation problems have been found in cvs(1),
902: allowing clients and servers access to files outside the
1.293 brad 903: repository or local CVS tree.</a>
1.279 deraadt 904: </ul>
905:
906: <p>
907: <li>
1.288 matthieu 908: <a name="34"></a>
1.261 david 909:
1.294 david 910: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 911: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 912: in <a href="anoncvs.html">OpenBSD current</a>. The
913: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
914: you should update your machine.
1.261 david 915: <p>
916: <ul>
1.302 markus 917: <li><a href="errata34.html#pfkey">Dec 14, 2004:
918: On systems running isakmpd(8) it is possible for a local
919: user to cause kernel memory corruption and system panic by
1.303 markus 920: setting ipsec(4) credentials on a socket.</a>
1.298 brad 921: <li><a href="errata34.html#xpm">Sep 16, 2004:
922: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 923: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
924: httpd(8)'s mod_rewrite module can be made to write one zero byte in
925: an arbitrary memory position outside of a char array, causing a DoS
926: or possibly buffer overflows.</a>
1.294 david 927: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 928: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 929: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 930: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 931: an attacker can delete IPsec tunnels at will.</a>
1.294 david 932: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 933: Multiple remote vulnerabilities have been found in the cvs(1)
934: server which can be used by CVS clients to crash or execute
1.293 brad 935: arbitrary code on the server.</a>
1.294 david 936: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 937: kdc(8) performs inadequate checking of request fields, leading
938: to the possibility of principal impersonation from other
939: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 940: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 941: A buffer overflow in the cvs(1) server has been found,
942: which can be used by CVS clients to execute arbitrary code on
943: the server.</a>
1.294 david 944: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 945: Integer overflow problems were found in procfs, allowing
946: reading of arbitrary kernel memory.</a>
1.294 david 947: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 948: Pathname validation problems have been found in cvs(1),
949: allowing clients and servers access to files outside the
950: repository or local CVS tree.</a>
1.294 david 951: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 952: A missing check for a NULL-pointer dereference may allow a
1.281 otto 953: remote attacker to crash applications using OpenSSL.</a>
1.294 david 954: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 955: Defects in the payload validation and processing functions of
956: isakmpd have been discovered. An attacker could send malformed
957: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 958: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 959: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
960: access module, using IP addresses without a netmask on big endian
961: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 962: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 963: An IPv6 MTU handling problem exists that could be used by an
964: attacker to cause a denial of service attack.</a>
1.294 david 965: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 966: A reference counting bug in shmat(2) could be used to write to
967: kernel memory under certain circumstances.</a>
1.294 david 968: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 969: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 970: by Thomas Walpuski.</a>
1.294 david 971: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 972: It may be possible for a local user to overrun the stack in
973: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 974: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 975: The use of certain ASN.1 encodings or malformed public keys may
976: allow an attacker to mount a denial of service attack against
977: applications linked with ssl(3).</a>
1.261 david 978: </ul>
979:
980: <li>
1.288 matthieu 981: <a name="33"></a>
1.246 deraadt 982:
1.294 david 983: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 984: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 985: in <a href="anoncvs.html">OpenBSD current</a>. The
986: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 987: you should update your machine.
1.246 deraadt 988: <p>
989: <ul>
1.294 david 990: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 991: Pathname validation problems have been found in cvs(1),
992: allowing clients and servers access to files outside the
993: repository or local CVS tree.</a>
1.294 david 994: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 995: A missing check for a NULL-pointer dereference may allow a
1.281 otto 996: remote attacker to crash applications using OpenSSL.</a>
1.294 david 997: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 998: Defects in the payload validation and processing functions of
999: isakmpd have been discovered. An attacker could send malformed
1000: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 1001: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 1002: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
1003: access module, using IP addresses without a netmask on big endian
1004: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 1005: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 1006: An IPv6 MTU handling problem exists that could be used by an
1007: attacker to cause a denial of service attack.</a>
1.294 david 1008: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 1009: A reference counting bug in shmat(2) could be used to write to
1010: kernel memory under certain circumstances.</a>
1.294 david 1011: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 1012: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1013: by Thomas Walpuski.</a>
1.294 david 1014: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 1015: It may be possible for a local user to execute arbitrary code
1016: resulting in escalation of privileges due to a stack overrun
1017: in compat_ibcs2(8).</a>
1.294 david 1018: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 1019: The use of certain ASN.1 encodings or malformed public keys may
1020: allow an attacker to mount a denial of service attack against
1021: applications linked with ssl(3).</a>
1.294 david 1022: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 1023: Access of freed memory in pf(4) could be used to
1.260 margarid 1024: remotely panic a machine using scrub rules.</a>
1.294 david 1025: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 1026: A buffer overflow in the address parsing in
1027: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1028: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 1029: OpenSSH versions prior to 3.7 contains a buffer management error
1030: that is potentially exploitable.</a>
1.294 david 1031: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 1032: Root may be able to reduce the security level by taking advantage of
1033: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 1034: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 1035: An improper bounds check in the kernel may allow a local user
1036: to panic the kernel.</a>
1.294 david 1037: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1038: An off-by-one error exists in the C library function realpath(3)
1039: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1040: </ul>
1041:
1.265 miod 1042:
1.247 david 1043: <p>
1.246 deraadt 1044: <li>
1.288 matthieu 1045: <a name="32"></a>
1.224 deraadt 1046:
1.294 david 1047: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 1048: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 1049: in <a href="anoncvs.html">OpenBSD current</a>. The
1050: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 1051: you should update your machine.
1.224 deraadt 1052: <p>
1053: <ul>
1.294 david 1054: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1055: The use of certain ASN.1 encodings or malformed public keys may
1056: allow an attacker to mount a denial of service attack against
1057: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1058: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 1059: Access of freed memory in pf(4) could be used to
1.260 margarid 1060: remotely panic a machine using scrub rules.</a>
1.294 david 1061: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1062: A buffer overflow in the address parsing in
1063: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1064: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1065: OpenSSH versions prior to 3.7 contains a buffer management error
1066: that is potentially exploitable.</a>
1.294 david 1067: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1068: Fix for a potential security issue in
1069: sendmail(8) with respect to DNS maps.</a>
1.294 david 1070: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1071: An off-by-one error exists in the C library function realpath(3)
1072: may allow an attacker to gain escalated privileges.</a>
1.294 david 1073: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1074: A buffer overflow in the address parsing in
1075: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1076: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1077: A cryptographic weaknesses in the Kerberos v4 protocol can be
1078: exploited on Kerberos v5 as well.</a>
1.294 david 1079: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1080: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1081: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1082: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1083: Various SSL and TLS operations in OpenSSL are vulnerable to
1084: timing attacks.</a>
1.294 david 1085: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1086: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1087: privileges to user daemon.</a>
1.294 david 1088: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1089: A buffer overflow in the envelope comments processing in
1090: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1091: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1092: httpd(8) leaks file inode numbers via ETag header as well as
1093: child PIDs in multipart MIME boundary generation. This could
1094: lead, for example, to NFS exploitation because it uses inode
1095: numbers as part of the file handle.</a>
1.294 david 1096: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1097: In ssl(8) an information leak can occur via timing by performing
1098: a MAC computation even if incorrect block cipher padding has
1099: been found, this is a countermeasure. Also, check for negative
1100: sizes, in allocation routines.</a>
1.294 david 1101: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1102: A double free exists in cvs(1) that could lead to privilege
1103: escalation for cvs configurations where the cvs command is
1.233 margarid 1104: run as a privileged user.</a>
1.294 david 1105: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1106: A buffer overflow exists in named(8) that could lead to a
1107: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1108: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1109: A logic error in the pool kernel memory allocator could cause
1110: memory corruption in low-memory situations, causing the system
1111: to crash.</a>
1.294 david 1112: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1113: An attacker can bypass smrsh(8)'s restrictions and execute
1114: arbitrary commands with the privileges of his own account.</a>
1.294 david 1115: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1116: Network bridges running pf with scrubbing enabled could cause
1117: mbuf corruption, causing the system to crash.</a>
1.294 david 1118: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1119: A buffer overflow can occur in the kadmind(8) daemon, leading
1120: to possible remote crash or exploit.</a>
1.224 deraadt 1121: </ul>
1122:
1.227 miod 1123: <p>
1124: <li>
1.288 matthieu 1125: <a name="31"></a>
1.203 deraadt 1126:
1.294 david 1127: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 1128: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 1129: in <a href="anoncvs.html">OpenBSD current</a>. The
1130: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1131: you should update your machine.
1.203 deraadt 1132:
1133: <p>
1134: <ul>
1.294 david 1135: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1136: A buffer overflow in the address parsing in
1137: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1138: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1139: A cryptographic weaknesses in the Kerberos v4 protocol can be
1140: exploited on Kerberos v5 as well.</a>
1.294 david 1141: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1142: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1143: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1144: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1145: Various SSL and TLS operations in OpenSSL are vulnerable to
1146: timing attacks.</a>
1.294 david 1147: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1148: A buffer overflow in lprm(1) may allow an attacker to gain
1149: root privileges.</a>
1.294 david 1150: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1151: A buffer overflow in the envelope comments processing in
1152: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1153: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1154: In ssl(8) an information leak can occur via timing by performing
1155: a MAC computation even if incorrect block cipher padding has
1156: been found, this is a countermeasure. Also, check for negative
1157: sizes, in allocation routines.</a>
1.294 david 1158: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1159: A double free exists in cvs(1) that could lead to privilege
1160: escalation for cvs configurations where the cvs command is
1.392 tobias 1161: run as a privileged user.</a>
1.294 david 1162: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1163: A buffer overflow exists in named(8) that could lead to a
1164: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1165: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1166: Incorrect argument checking in the getitimer(2) system call
1167: may allow an attacker to crash the system.</a>
1.294 david 1168: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1169: An attacker can bypass smrsh(8)'s restrictions and execute
1170: arbitrary commands with the privileges of his own account.</a>
1.294 david 1171: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1172: A buffer overflow can occur in the kadmind(8) daemon, leading
1173: to possible remote crash or exploit.</a>
1.294 david 1174: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1175: Incorrect argument checking in the setitimer(2) system call
1176: may allow an attacker to write to kernel memory.</a>
1.294 david 1177: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1178: An insufficient boundary check in the select system call
1.220 miod 1179: allows an attacker to overwrite kernel memory and execute arbitrary code
1180: in kernel context.</a>
1.294 david 1181: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1182: Several remote buffer overflows can occur in the SSL2 server and SSL3
1183: client of the ssl(8) library, as in the ASN.1 parser code in the
1184: crypto(3) library, all of them being potentially remotely
1185: exploitable.</a>
1.294 david 1186: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1187: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1188: possible remote crash.</a>
1.294 david 1189: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1190: A race condition exists in the pppd(8) daemon which may cause it to
1191: alter the file permissions of an arbitrary file.</a>
1.294 david 1192: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1193: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1194: crash.</a>
1.294 david 1195: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1196: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1197: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1198: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1199: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1200: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1201: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1202: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1203: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1204: input validation error that can result in an integer overflow and
1205: privilege escalation.</a>
1.294 david 1206: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1207: A buffer overflow can occur during the interpretation of chunked
1208: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1209: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1210: Under certain conditions, on systems using YP with netgroups
1211: in the password database, it is possible that sshd(8) does
1212: ACL checks for the requested user name but uses the password
1213: database entry of a different user for authentication. This
1214: means that denied users might authenticate successfully
1215: while permitted users could be locked out.</a>
1.294 david 1216: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1217: A race condition exists that could defeat the kernel's
1218: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1219: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1220: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1221: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1222: A local user can gain super-user privileges due to a buffer
1223: overflow in sshd(8) if AFS has been configured on the system
1224: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1225: in the sshd_config file.</a>
1.203 deraadt 1226: </ul>
1227:
1.235 miod 1228: <p>
1.203 deraadt 1229: <li>
1.288 matthieu 1230: <a name="30"></a>
1.187 deraadt 1231:
1.294 david 1232: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1233: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1234: in <a href="anoncvs.html">OpenBSD current</a>. The
1235: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1236: you should update your machine.
1.187 deraadt 1237:
1238: <p>
1239: <ul>
1.294 david 1240: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1241: A buffer overflow exists in named(8) that could lead to a
1242: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1243: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1244: Incorrect argument checking in the getitimer(2) system call
1245: may allow an attacker to crash the system.</a>
1.294 david 1246: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1247: An attacker can bypass smrsh(8)'s restrictions and execute
1248: arbitrary commands with the privileges of his own account.</a>
1.294 david 1249: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1250: A buffer overflow can occur in the kadmind(8) daemon, leading
1251: to possible remote crash or exploit.</a>
1.294 david 1252: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1253: Incorrect argument checking in the setitimer(2) system call
1254: may allow an attacker to write to kernel memory.</a>
1.294 david 1255: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1256: An insufficient boundary check in the select and poll system calls
1257: allows an attacker to overwrite kernel memory and execute arbitrary code
1258: in kernel context.</a>
1.294 david 1259: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1260: Several remote buffer overflows can occur in the SSL2 server and SSL3
1261: client of the ssl(8) library, as in the ASN.1 parser code in the
1262: crypto(3) library, all of them being potentially remotely
1263: exploitable.</a>
1.294 david 1264: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1265: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1266: possible remote crash.</a>
1.294 david 1267: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1268: A race condition exists in the pppd(8) daemon which may cause it to
1269: alter the file permissions of an arbitrary file.</a>
1.294 david 1270: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1271: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1272: crash.</a>
1.294 david 1273: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1274: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1275: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1276: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1277: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1278: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1279: input validation error that can result in an integer overflow and
1280: privilege escalation.</a>
1.294 david 1281: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1282: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1283: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1284: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1285: A buffer overflow can occur during the interpretation of chunked
1286: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1287: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1288: A race condition exists that could defeat the kernel's
1289: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1290: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1291: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1292: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1293: A local user can gain super-user privileges due to a buffer
1294: overflow in sshd(8) if AFS has been configured on the system
1295: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1296: in the sshd_config file.</a>
1.294 david 1297: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1298: The mail(1) was interpreting tilde escapes even when invoked
1299: in non-interactive mode. As mail(1) is called as root from cron,
1300: this can lead to a local root compromise.</a>
1.294 david 1301: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1302: Under certain conditions, on systems using YP with netgroups in
1303: the password database, it is possible for the rexecd(8) and rshd(8)
1304: daemons to execute a shell from a password database entry for a
1305: different user. Similarly, atrun(8) may change to the wrong
1306: home directory when running jobs.</a>
1.294 david 1307: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1308: A potential double free() exists in the zlib library;
1309: this is not exploitable on OpenBSD.
1310: The kernel also contains a copy of zlib; it is not
1311: currently known if the kernel zlib is exploitable.</a>
1.294 david 1312: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1313: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1314: may allow a local user to gain super-user privileges.</a>
1.294 david 1315: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1316: A race condition between the ptrace(2) and execve(2) system calls
1317: allows an attacker to modify the memory contents of suid/sgid
1318: processes which could lead to compromise of the super-user account.</a>
1.294 david 1319: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1320: There is a security hole in sudo(8) that can be exploited
1321: when the Postfix sendmail replacement is installed that may
1322: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1323: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1324: An attacker can trick a machine running the lpd daemon into
1325: creating new files in the root directory from a machine with
1326: remote line printer access.</a>
1.294 david 1327: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1328: The vi.recover script can be abused in such a way as
1329: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1330: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1331: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1332: resulting in a crash.</a>
1.294 david 1333: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1334: A security hole that may allow an attacker to partially authenticate
1335: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1336: </ul>
1337:
1338: <p>
1339: <li>
1.288 matthieu 1340: <a name="29"></a>
1.173 deraadt 1341:
1.294 david 1342: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1343: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1344: in <a href="anoncvs.html">OpenBSD current</a>. The
1345: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1346: you should update your machine.
1347:
1.173 deraadt 1348:
1349: <p>
1350: <ul>
1.294 david 1351: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1352: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1353: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1354: A race condition exists that could defeat the kernel's
1355: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1356: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1357: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1358: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1359: A local user can gain super-user privileges due to a buffer
1360: overflow in sshd(8) if AFS has been configured on the system
1361: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1362: in the sshd_config file.</a>
1.294 david 1363: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1364: The mail(1) was interpreting tilde escapes even when invoked
1365: in non-interactive mode. As mail(1) is called as root from cron,
1366: this can lead to a local root compromise.</a>
1.294 david 1367: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1368: A potential double free() exists in the zlib library;
1369: this is not exploitable on OpenBSD.
1370: The kernel also contains a copy of zlib; it is not
1371: currently known if the kernel zlib is exploitable.</a>
1.294 david 1372: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1373: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1374: may allow a local user to gain super-user privileges.</a>
1.294 david 1375: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1376: A race condition between the ptrace(2) and execve(2) system calls
1377: allows an attacker to modify the memory contents of suid/sgid
1378: processes which could lead to compromise of the super-user account.</a>
1.294 david 1379: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1380: There is a security hole in sudo(8) that can be exploited
1381: when the Postfix sendmail replacement is installed that may
1382: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1383: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1384: An attacker can trick a machine running the lpd daemon into
1385: creating new files in the root directory from a machine with
1386: remote line printer access.</a>
1.294 david 1387: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1388: The vi.recover script can be abused in such a way as
1389: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1390: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1391: A security hole exists in uuxqt(8) that may allow an
1392: attacker to gain root privileges.</a>
1.294 david 1393: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1394: A security hole exists in lpd(8) that may allow an
1395: attacker to gain root privileges if lpd is running.</a>
1.294 david 1396: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1397: A security hole exists in sendmail(8) that may allow an
1398: attacker on the local host to gain root privileges.</a>
1.294 david 1399: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1400: A kernel buffer overflow in the NFS code can be used to execute
1401: arbitrary code by users with mount privileges (only root by
1.181 millert 1402: default).</a>
1.294 david 1403: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1404: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1405: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1406: sshd(8) allows users to delete arbitrary files named "cookies"
1407: if X11 forwarding is enabled. X11 forwarding is disabled
1408: by default.</a>
1.294 david 1409: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1410: Programs using the fts routines can be tricked into changing
1411: into the wrong directory.</a>
1.294 david 1412: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1413: Sendmail signal handlers contain unsafe code,
1414: leading to numerous race conditions.</a>
1.173 deraadt 1415: </ul>
1416:
1417: <p>
1418: <li>
1.288 matthieu 1419: <a name="28"></a>
1.152 deraadt 1420:
1.294 david 1421: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1422: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1423: in <a href="anoncvs.html">OpenBSD current</a>. The
1424: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1425: you should update your machine.
1426:
1.152 deraadt 1427:
1428: <p>
1429: <ul>
1.294 david 1430: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1431: A security hole exists in uuxqt(8) that may allow an
1432: attacker to gain root privileges.</a>
1.294 david 1433: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1434: A security hole exists in lpd(8) that may allow an
1435: attacker to gain root privileges if lpd is running.</a>
1.294 david 1436: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1437: A security hole exists in sendmail(8) that may allow an
1438: attacker on the local host to gain root privileges.</a>
1.294 david 1439: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1440: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1441: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1442: Programs using the fts routines can be tricked into changing
1443: into the wrong directory.</a>
1.294 david 1444: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1445: Sendmail signal handlers contain unsafe code,
1446: leading to numerous race conditions.</a>
1.294 david 1447: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1448: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1449: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1450: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1451: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1452: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1453: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1454: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1455: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1456: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1457: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1458: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1459: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1460: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1461: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1462: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1463: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1464: rnd(4) did not use all of its input when written to.</a>
1.294 david 1465: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1466: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1467: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1468: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1469: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1470: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1471: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1472: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1473: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1474: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1475: </ul>
1476:
1477: <p>
1478: <li>
1.288 matthieu 1479: <a name="27"></a>
1.124 deraadt 1480:
1.294 david 1481: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1482: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1483: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1484: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1485:
1486: <p>
1487: <ul>
1.294 david 1488: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1489: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1490: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1491: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1492: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1493: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1494: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1495: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1496: (patch included)</a>
1.294 david 1497: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1498: X11 libraries have 2 potential overflows in xtrans code.
1499: (patch included)</a>
1.294 david 1500: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1501: Apache mod_rewrite and mod_vhost_alias modules could expose files
1502: on the server in certain configurations if used.
1503: (patch included)</a>
1.294 david 1504: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1505: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1506: TERMPATH and TERMCAP environment variables as it should.
1507: (patch included)</a>
1.294 david 1508: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1509: There are printf-style format string bugs in several privileged
1510: programs. (patch included)</a>
1.294 david 1511: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1512: libcurses honored terminal descriptions in the $HOME/.terminfo
1513: directory as well as in the TERMCAP environment variable for
1514: setuid and setgid applications.
1.146 deraadt 1515: (patch included)</a>
1.294 david 1516: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1517: A format string vulnerability exists in talkd(8).
1518: (patch included)</a>
1.294 david 1519: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1520: A format string vulnerability exists in the pw_error() function of the
1521: libutil library, yielding localhost root through chpass(1).
1522: (patch included)</a>
1.294 david 1523: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1524: Bad ESP/AH packets could cause a crash under certain conditions.
1525: (patch included)</a>
1.294 david 1526: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1527: A format string vulnerability (localhost root) exists in xlock(1).
1528: (patch included)</a>
1.294 david 1529: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1530: Various bugs found in X11 libraries have various side effects, almost
1531: completely denial of service in OpenBSD.
1532: (patch included)</a>
1.294 david 1533: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1534: Just like pretty much all the other unix ftp daemons
1535: on the planet, ftpd had a remote root hole in it.
1536: Luckily, ftpd was not enabled by default.
1.137 deraadt 1537: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1538: (patch included)</a>
1.294 david 1539: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1540: Mopd, very rarely used, contained some buffer overflows.
1541: (patch included)</a>
1.294 david 1542: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1543: libedit would check for a <b>.editrc</b> file in the current
1544: directory. Not known to be a real security issue, but a patch
1545: is available anyways.
1546: (patch included)</a>
1.294 david 1547: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1548: A serious bug in dhclient(8) could allow strings from a
1549: malicious dhcp server to be executed in the shell as root.
1550: (patch included)</a>
1.294 david 1551: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1552: A serious bug in isakmpd(8) policy handling wherein
1553: policy verification could be completely bypassed in isakmpd.
1554: (patch included)</a>
1.294 david 1555: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1556: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1557: should not be used, and results in security problems on
1558: other operating systems.</a>
1.294 david 1559: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1560: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1561: (patch included)</a>
1.294 david 1562: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1563: Improper use of ipf <i>keep-state</i> rules can result
1564: in firewall rules being bypassed. (patch included)</a>
1565:
1.124 deraadt 1566: </ul>
1567:
1568: <p>
1569: <li>
1.288 matthieu 1570: <a name="26"></a>
1.119 deraadt 1571:
1.294 david 1572: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1573: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1574: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1575: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1576:
1577: <p>
1578: <ul>
1.294 david 1579: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1580: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1581: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1582: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1583: Improper use of ipf <i>keep-state</i> rules can result
1584: in firewall rules being bypassed. (patch included)</a>
1.294 david 1585: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1586: xlockmore has a bug which a localhost attacker can use to gain
1587: access to the encrypted root password hash (which is normally
1.245 miod 1588: encoded using blowfish</a> (see
1.294 david 1589: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1590: crypt(3)</a>)
1.245 miod 1591: (patch included).
1.294 david 1592: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1593: Systems running with procfs enabled and mounted are
1594: vulnerable to a very tricky exploit. procfs is not
1595: mounted by default.
1596: (patch included).</a>
1.294 david 1597: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1598: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1599: thus exposing the system to a race where the aliases file
1600: did not exist.
1.119 deraadt 1601: (patch included).</a>
1.294 david 1602: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1603: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1604: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1605: A buffer overflow in the RSAREF code included in the
1606: USA version of libssl, is possibly exploitable in
1607: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1608: (patch included).<br></a>
1609: <strong>Update:</strong> Turns out that this was not exploitable
1610: in any of the software included in OpenBSD 2.6.
1.294 david 1611: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1612: Any user could change interface media configurations, resulting in
1613: a localhost denial of service attack.
1.121 deraadt 1614: (patch included).</a>
1.119 deraadt 1615: </ul>
1616:
1617: <p>
1618: <li>
1.288 matthieu 1619: <a name="25"></a>
1.106 deraadt 1620:
1.294 david 1621: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1622: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1623: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1624: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1625:
1.96 deraadt 1626: <p>
1.104 deraadt 1627: <ul>
1.294 david 1628: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1629: In cron(8), make sure argv[] is NULL terminated in the
1630: fake popen() and run sendmail as the user, not as root.
1631: (patch included).</a>
1.294 david 1632: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1633: filesystems had an overrun in their handling of uio_offset
1634: in their readdir() routines. (These filesystems are not
1635: enabled by default). (patch included).</a>
1.294 david 1636: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1637: when we execve() a new process. (patch included).</a>
1.294 david 1638: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1639: been handled by IPsec may be transmitted as cleartext.
1640: PF_KEY SA expirations may leak kernel resources.
1641: (patch included).</a>
1.294 david 1642: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1643: motd re-writing and change the find(1) to use -execdir
1644: (patch included).</a>
1.294 david 1645: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1646: users to chflags(2) or fchflags(2) on character or block devices
1647: which they may currently be the owner of (patch included).</a>
1.294 david 1648: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1649: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1650: </ul>
1651:
1.106 deraadt 1652: <p>
1653: <li>
1.288 matthieu 1654: <a name="24"></a>
1.235 miod 1655:
1.294 david 1656: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1657: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1658: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1659: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1660:
1.96 deraadt 1661: <p>
1.75 deraadt 1662: <ul>
1.294 david 1663: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1664: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1665: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1666: another kernel crash case caused by the <strong>crashme</strong>
1667: program (patch included).</a>
1.294 david 1668: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1669: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1670: (patch included).</a>
1.294 david 1671: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1672: existed in ping(8). (patch included).</a>
1.294 david 1673: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1674: the ipq, which could permit an attacker to cause a crash.
1675: (patch included).</a>
1.294 david 1676: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1677: kernel between accept(2) and select(2) could permit an attacker
1678: to hang sockets from remote.
1679: (patch included).</a>
1.294 david 1680: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1681: bog the machine excessively and cause problems.
1682: (patch included).</a>
1.294 david 1683: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1684: DDB interacted to possibly cause a crash.
1685: (patch included).</a>
1.294 david 1686: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1687: (patch included).</a>
1.294 david 1688: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1689: problem in bootpd(8). (patch included).</a>
1.294 david 1690: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1691: exploitable problem relating to environment variables in termcap
1692: and curses. (patch included).</a>
1.294 david 1693: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1694: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1695: </ul>
1696:
1.106 deraadt 1697: <p>
1698: <li>
1.288 matthieu 1699: <a name="23"></a>
1.235 miod 1700:
1.294 david 1701: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1702: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1703: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1704: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1705:
1.96 deraadt 1706: <p>
1.53 matthieu 1707: <ul>
1.294 david 1708: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1709: problem in bootpd(8). (patch included).</a>
1.294 david 1710: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1711: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1712: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1713: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1714: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1715: chpass(1) has a file descriptor leak which allows an
1716: attacker to modify /etc/master.passwd.</a>
1.294 david 1717: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1718: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1719: should not be executed with fd slots 0, 1, or 2 free.
1720: (patch included).</a>
1.294 david 1721: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1722: libraries (patches included).</a>
1.294 david 1723: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1724: processes too permissive (4th revision patch included).</a>
1.294 david 1725: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1726: of immutable and append-only file flags. (patch included).</a>
1.294 david 1727: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1728: if IPSEC is enabled (patch included).</a>
1.294 david 1729: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1730: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1731: </ul>
1.9 deraadt 1732:
1.106 deraadt 1733: <p>
1734: <li>
1.288 matthieu 1735: <a name="22"></a>
1.235 miod 1736:
1.294 david 1737: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1738: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1739: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1740: still exist in other operating systems. (The supplied patches are for
1741: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1742:
1.96 deraadt 1743: <p>
1.9 deraadt 1744: <ul>
1.294 david 1745: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1746: packets if IPSEC is enabled (patch included).</a>
1.294 david 1747: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1748: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1749: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1750: (patch included).</a>
1.294 david 1751: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1752: (patch included).</a>
1.294 david 1753: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1754: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1755: (patch included).</a>
1.294 david 1756: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1757: export (patch included).</a>
1.112 philen 1758: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1759: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1760: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1761: Acceptance.</a>
1.294 david 1762: A patch is available <a href="errata22.html#sourceroute">here</a>.
1763: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1764: flaw (patch included).</a>
1.294 david 1765: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1766: </ul>
1767:
1.106 deraadt 1768: <p>
1769: <li>
1.288 matthieu 1770: <a name="21"></a>
1.235 miod 1771:
1.294 david 1772: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1773: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1774: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1775: exist in other operating systems. (If you are running OpenBSD 2.1, we
1776: would strongly recommend an upgrade to the newest release, as this
1777: patch list only attempts at fixing the most important security
1778: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1779: security problems. Many of those problems were solved in ways which
1780: make it hard for us to provide patches).
1781:
1.96 deraadt 1782: <p>
1.52 deraadt 1783: <ul>
1.112 philen 1784: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1785: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1786: (patch included)</a>
1.112 philen 1787: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1788: </ul>
1.51 deraadt 1789:
1.106 deraadt 1790: <p>
1791: <li>
1.288 matthieu 1792: <a name="20"></a>
1.235 miod 1793:
1.294 david 1794: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1795: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1796: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1797: exist in other operating systems. (If you are running OpenBSD 2.0, we
1798: commend you for being there back in the old days!, but you're really
1799: missing out if you don't install a new version!)
1800:
1801: <p>
1802: <ul>
1.112 philen 1803: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1804: resolver (patch included)</a>
1805: <li>Many others... if people can hunt them down, please let me know
1806: and we'll put them up here.
1807: </ul>
1.51 deraadt 1808: <p>
1.106 deraadt 1809:
1.288 matthieu 1810: <a name="watching"></a>
1.294 david 1811: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1812:
1.21 deraadt 1813: Since we take a proactive stance with security, we are continually
1814: finding and fixing new security problems. Not all of these problems
1.80 espie 1815: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1816: confirmed to be exploitable; many simple bugs we fix do turn out to
1817: have security consequences we could not predict. We do not have the
1818: time resources to make these changes available in the above format.<p>
1.21 deraadt 1819:
1820: Thus there are usually minor security fixes in the current source code
1821: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1822: guarantee that these problems are of minimal impact and unproven
1.44 ian 1823: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1824: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1825:
1.45 deraadt 1826: People who are really concerned with security can do a number of
1827: things:<p>
1.21 deraadt 1828:
1829: <ul>
1830: <li>If you understand security issues, watch our
1.294 david 1831: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1832: eye out for things which appear security related. Since
1.21 deraadt 1833: exploitability is not proven for many of the fixes we make,
1834: do not expect the relevant commit message to say "SECURITY FIX!".
1835: If a problem is proven and serious, a patch will be available
1836: here very shortly after.
1.161 horacio 1837: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1838: security-announce mailing list</a> which will notify you for every
1.186 ian 1839: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1840: and instruct you on how to patch the problem.
1.21 deraadt 1841: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1842: complete system build from time to time (read /usr/src/Makefile
1843: carefully). Users can make the assumption that the current
1844: source tree always has stronger security than the previous release.
1.45 deraadt 1845: However, building your own system from source code is not trivial;
1.397 deraadt 1846: it is nearly 850MB of source code, and problems do occur as we
1.45 deraadt 1847: transition between major releases.
1.115 ericj 1848: <li>Install a binary snapshot for your
1.80 espie 1849: architecture, which are made available fairly often. For
1.29 deraadt 1850: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1851: </ul>
1852:
1.9 deraadt 1853: <p>
1.288 matthieu 1854: <a name="reporting"></a>
1.294 david 1855: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1856:
1.5 deraadt 1857: <p> If you find a new security problem, you can mail it to
1.294 david 1858: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1859: <br>
1.5 deraadt 1860: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1861: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1862:
1.107 deraadt 1863: <p>
1.288 matthieu 1864: <a name="papers"></a>
1.294 david 1865: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1866:
1.389 lum 1867: Numerous
1.404 deraadt 1868: <a href="papers/index.html">papers</a> have been written by OpenBSD team members,
1.389 lum 1869: many dedicated to security.
1.294 david 1870: </ul>
1.1 deraadt 1871:
1.24 deraadt 1872: </body>
1873: </html>