Annotation of www/security.html, Revision 1.408
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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>
1.408 ! deraadt 234: <li><a href="errata55.html#002_openssl">April 7, 2014:
! 235: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
! 236: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.407 deraadt 237: </ul>
1.398 sthen 238:
1.407 deraadt 239: <li><a name="54"></a>
1.398 sthen 240: <h3><font color="#e00000">OpenBSD 5.4 Security Advisories</font></h3>
241: These are the OpenBSD 5.4 advisories -- all these problems are solved
242: in <a href=anoncvs.html>OpenBSD current</a> and the
243: <a href=stable.html>patch branch</a>.
244:
245: <p>
246: <ul>
247: <li><a href="errata54.html#002_sshgcm">November 7, 2013:
248: Memory corruption in post-authentication sshd process if AES-GCM cipher
249: is selected</a>
250: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
251: <li><a href="errata54.html#004_nginx">November 21, 2013:
252: Security restriction bypass in certain nginx(8) configurations</a>
253: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 254: <li><a href="errata54.html#006_libXfont">January 10, 2014:
1.400 matthieu 255: Buffer overflow in parsing of BDF font files</a>
1.401 matthieu 256: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 ! deraadt 257: <li><a href="errata54.html#007_openssl">April 7, 2014:
! 258: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
! 259: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.398 sthen 260: </ul>
261:
1.407 deraadt 262: <li><a name="53"></a>
1.395 sthen 263: <h3><font color="#e00000">OpenBSD 5.3 Security Advisories</font></h3>
264: These are the OpenBSD 5.3 advisories -- all these problems are solved
265: in <a href=anoncvs.html>OpenBSD current</a> and the
266: <a href=stable.html>patch branch</a>.
267:
268: <p>
269: <ul>
1.398 sthen 270: <li><a href="errata53.html#009_sshgcm">November 7, 2013:
271: Memory corruption in post-authentication sshd process if AES-GCM cipher
272: is selected</a>
273: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
274: <li><a href="errata53.html#011_nginx">November 21, 2013:
275: Security restriction bypass in certain nginx(8) configurations</a>
276: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 277: <li><a href="errata53.html#013_libXfont">January 10, 2014:
1.402 matthieu 278: Buffer overflow in parsing of BDF font files</a>
279: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 ! deraadt 280: <li><a href="errata53.html#014_openssl">April 7, 2014:
! 281: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
! 282: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.395 sthen 283: </ul>
284:
1.399 deraadt 285: <br><p><b>
286: OpenBSD 5.2 and earlier releases are not supported anymore. The following
287: paragraphs only list advisories issued while they were maintained; these
288: releases are likely to be affected by the advisories for more recent releases.
1.407 deraadt 289: </b>
290: <p>
1.399 deraadt 291:
1.395 sthen 292: <li>
1.393 sthen 293: <a name="52"></a>
294:
295: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
296: These are the OpenBSD 5.2 advisories -- all these problems are solved
297: in <a href=anoncvs.html>OpenBSD current</a> and the
298: <a href=stable.html>patch branch</a>.
299:
300: <p>
301: <ul>
302: None yet!
303: </ul>
304:
305: <li>
1.390 sthen 306: <a name="51"></a>
307:
308: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
309: These are the OpenBSD 5.1 advisories -- all these problems are solved
310: in <a href=anoncvs.html>OpenBSD current</a> and the
311: <a href=stable.html>patch branch</a>.
312:
313: <p>
314: <ul>
1.393 sthen 315: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
316: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 317: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 318: </ul>
319:
320: <li>
1.388 miod 321: <a name="50"></a>
322:
323: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
324: These are the OpenBSD 5.0 advisories -- all these problems are solved
325: in <a href=anoncvs.html>OpenBSD current</a> and the
326: <a href=stable.html>patch branch</a>.
327:
328: <p>
329: <ul>
1.393 sthen 330: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
331: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 332: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 333: </ul>
334:
335: <li>
1.387 miod 336: <a name="49"></a>
337:
338: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
339: These are the OpenBSD 4.9 advisories -- all these problems are solved
340: in <a href=anoncvs.html>OpenBSD current</a> and the
341: <a href=stable.html>patch branch</a>.
342:
343: <p>
344: <ul>
345: None yet!
346: </ul>
347:
348: <li>
349: <a name="48"></a>
350:
351: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
352: These are the OpenBSD 4.8 advisories -- all these problems are solved
353: in <a href=anoncvs.html>OpenBSD current</a> and the
354: <a href=stable.html>patch branch</a>.
355:
356: <p>
357: <ul>
358: <li><a href="errata48.html#009_pf">February 16, 2011:
359: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
360: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
361: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
362: prefixes "10.1.1.1/30") are not affected.</a>
363: <li><a href="errata48.html#008_openssl">February 11, 2011:
364: An incorrectly formatted ClientHello handshake message could cause
365: OpenSSL to parse past the end of the message. An attacker could use
366: this flaw to trigger an invalid memory access, causing a crash of an
367: application linked to OpenSSL. As well, certain applications may expose
368: the contents of parsed OCSP extensions, specifically the OCSP nonce
369: extension.
370: <br>
371: Applications are only affected if they act as a server and call
372: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
373: that nothing in the base OS uses this. Apache httpd started using this
374: in v2.3.3; this is newer than the version in ports.</a>
375: <li><a href="errata48.html#005_pf">December 17, 2010:
376: Insufficent initialization of the pf rule structure in the ioctl
377: handler may allow userland to modify kernel memory. By default root
378: privileges are needed to add or modify pf rules.</a>
379: </ul>
380:
381: <li>
1.385 jasper 382: <a name="47"></a>
383:
384: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
385: These are the OpenBSD 4.7 advisories -- all these problems are solved
386: in <a href=anoncvs.html>OpenBSD current</a> and the
387: <a href=stable.html>patch branch</a>.
388:
389: <p>
390: <ul>
1.387 miod 391: <li><a href="errata47.html#013_pf">February 16, 2011:
392: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
393: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
394: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
395: prefixes "10.1.1.1/30") are not affected.</a>
396: <li><a href="errata47.html#012_openssl">February 11, 2011:
397: An incorrectly formatted ClientHello handshake message could cause
398: OpenSSL to parse past the end of the message. An attacker could use
399: this flaw to trigger an invalid memory access, causing a crash of an
400: application linked to OpenSSL. As well, certain applications may expose
401: the contents of parsed OCSP extensions, specifically the OCSP nonce
402: extension.
403: <br>
404: Applications are only affected if they act as a server and call
405: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
406: that nothing in the base OS uses this. Apache httpd started using this
407: in v2.3.3; this is newer than the version in ports.</a>
408: <li><a href="errata47.html#009_pf">December 17, 2010:
409: Insufficent initialization of the pf rule structure in the ioctl
410: handler may allow userland to modify kernel memory. By default root
411: privileges are needed to add or modify pf rules.</a>
412: <li><a href="errata47.html#004_pfsync">April 23, 2010:
413: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 414: <li><a href="errata47.html#003_openssl">April 14, 2010:
415: In TLS connections, certain incorrectly formatted records can
416: cause an OpenSSL client or server to crash due to a read
1.392 tobias 417: attempt at NULL.</a>
1.385 jasper 418: </ul>
419:
420: <li>
1.378 jasper 421: <a name="46"></a>
422:
423: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
424: These are the OpenBSD 4.6 advisories -- all these problems are solved
425: in <a href=anoncvs.html>OpenBSD current</a> and the
426: <a href=stable.html>patch branch</a>.
427:
428: <p>
429: <ul>
1.385 jasper 430: <li><a href="errata46.html#010_openssl">April 14, 2010:
431: In TLS connections, certain incorrectly formatted records can
432: cause an OpenSSL client or server to crash due to a read
1.392 tobias 433: attempt at NULL.</a>
1.384 jasper 434: <li><a href="errata46.html#006_openssl">March 12, 2010:
435: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 436: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 437: <li><a href="errata46.html#004_openssl">November 26, 2009:
438: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 439: related to renegotiation.</a>
1.378 jasper 440: </ul>
1.382 tobias 441:
442: <li>
1.373 djm 443: <a name="45"></a>
444:
445: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
446: These are the OpenBSD 4.5 advisories -- all these problems are solved
447: in <a href=anoncvs.html>OpenBSD current</a> and the
448: <a href=stable.html>patch branch</a>.
449:
450: <p>
451: <ul>
1.385 jasper 452: <li><a href="errata45.html#016_openssl">April 14, 2010:
453: In TLS connections, certain incorrectly formatted records can
454: cause an OpenSSL client or server to crash due to a read
1.392 tobias 455: attempt at NULL.</a>
1.385 jasper 456: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 457: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 458: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 459: <li><a href="errata45.html#010_openssl">November 26, 2009:
460: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 461: related to renegotiation.</a>
1.373 djm 462: </ul>
463:
464: <li>
1.365 deraadt 465: <a name="44"></a>
466:
467: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
468: These are the OpenBSD 4.4 advisories -- all these problems are solved
469: in <a href=anoncvs.html>OpenBSD current</a> and the
470: <a href=stable.html>patch branch</a>.
471:
472: <p>
473: <ul>
1.372 millert 474: <li><a href="errata44.html#011_sudo">February 22, 2009:
475: sudo(8) may allow a user listed in sudoers to run a command
476: as a different user than their access rule specifies when a Unix
477: group is used in the RunAs portion of the rule.</a>
1.370 djm 478: <li><a href="errata44.html#008_bind">January 15, 2009:
479: named(8) suffered from a similar logic error that may allow
480: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 481: <li><a href="errata44.html#007_openssl">January 9, 2009:
482: OpenSSL suffered from some logic errors that allowed bypass
483: of DSA/ECDSA certificate validation.</a>
1.367 brad 484: <li><a href="errata44.html#001_ndp">November 2, 2008:
485: The Neighbor Discovery Protocol (ndp) did not correctly verify
486: neighbor solicitation requests maybe allowing a nearby attacker
487: to intercept traffic.</a>
1.365 deraadt 488: </ul>
489:
490: <li>
1.357 brad 491: <a name="43"></a>
492:
493: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
494: These are the OpenBSD 4.3 advisories -- all these problems are solved
495: in <a href=anoncvs.html>OpenBSD current</a> and the
496: <a href=stable.html>patch branch</a>.
497:
498: <p>
499: <ul>
1.372 millert 500: <li><a href="errata43.html#011_sudo">February 22, 2009:
501: sudo(8) may allow a user listed in sudoers to run a command
502: as a different user than their access rule specifies when a Unix
503: group is used in the RunAs portion of the rule.</a>
1.370 djm 504: <li><a href="errata43.html#008_bind">January 15, 2009:
505: named(8) suffered from a similar logic error that may allow
506: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 507: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 508: OpenSSL suffered from some logic errors that allowed bypass
509: of DSA/ECDSA certificate validation.</a>
1.382 tobias 510: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 511: The Neighbor Discovery Protocol (ndp) did not correctly verify
512: neighbor solicitation requests maybe allowing a nearby attacker
513: to intercept traffic.</a>
1.362 brad 514: <li><a href="errata43.html#004_bind">July 23, 2008:
515: A vulnerability has been found with BIND.</a>
1.361 brad 516: <li><a href="errata43.html#003_xorg">July 15, 2008:
517: Multiple vulnerabilities in X.Org.</a>
1.359 brad 518: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 519: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 520: <li><a href="errata43.html#001_openssh">March 30, 2008:
521: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 522: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 523: </ul>
524:
525: <li>
1.348 merdely 526: <a name="42"></a>
527: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
528: These are the OpenBSD 4.2 advisories -- all these problems are solved
529: in <a href=anoncvs.html>OpenBSD current</a> and the
530: <a href=stable.html>patch branch</a>.
531:
532: <p>
533: <ul>
1.364 tobias 534: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 535: The Neighbor Discovery Protocol (ndp) did not correctly verify
536: neighbor solicitation requests maybe allowing a nearby attacker
537: to intercept traffic.</a>
1.362 brad 538: <li><a href="errata42.html#013_bind">July 23, 2008:
539: A vulnerability has been found with BIND.</a>
1.361 brad 540: <li><a href="errata42.html#012_xorg2">July 15, 2008:
541: Multiple vulnerabilities in X.Org.</a>
1.359 brad 542: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 543: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 544: <li><a href="errata42.html#010_openssh">March 30, 2008:
545: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 546: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 547: <li><a href="errata42.html#009_ppp">March 7, 2008:
548: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 549: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
550: Multiple vulnerabilities in X.Org.</a>
1.351 okan 551: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
552: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 553: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 554: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 555: </ul>
556:
557: <li>
1.346 matthieu 558: <a name="41"></a>
559:
560: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
561: These are the OpenBSD 4.1 advisories -- all these problems are solved
562: in <a href=anoncvs.html>OpenBSD current</a> and the
563: <a href=stable.html>patch branch</a>.
564:
565: <p>
566: <ul>
1.359 brad 567: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 568: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 569: <li><a href="errata41.html#015_openssh">March 30, 2008:
570: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 571: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 572: <li><a href="errata41.html#014_ppp">March 7, 2008:
573: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 574: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
575: Multiple vulnerabilities in X.Org.</a>
576: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
577: The SSL_get_shared_ciphers() function in OpenSSL contains
578: an off-by-one overflow.</a>
1.350 deraadt 579: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 580: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 581: <li><a href="errata41.html#009_file">Jul 9, 2007:
582: Fix possible heap overflow in file(1).</a>
1.346 matthieu 583: <li><a href="errata41.html#005_route6">Apr 27, 2007:
584: IPv6 type 0 route headers can be used to mount a DoS attack
585: against hosts and networks.</a>
586: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
587: Multiple vulnerabilities in X.Org.</a>
588: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
589: Incorrect mbuf handling for ICMP6 packets.</a>
590: </ul>
591:
592: <li>
1.334 brad 593: <a name="40"></a>
594: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
595: These are the OpenBSD 4.0 advisories -- all these problems are solved
596: in <a href=anoncvs.html>OpenBSD current</a> and the
597: <a href=stable.html>patch branch</a>.
598:
599: <p>
600: <ul>
1.382 tobias 601: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
602: The SSL_get_shared_ciphers() function in OpenSSL contains an
603: off-by-one overflow.</a>
1.350 deraadt 604: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 605: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 606: <li><a href="errata40.html#015_file">Jul 9, 2007:
607: Fix possible heap overflow in file(1).</a>
1.343 deraadt 608: <li><a href="errata40.html#012_route6">Apr 23, 2007:
609: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 610: against hosts and networks.</a>
1.342 mbalmer 611: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
612: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 613: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
614: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 615: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 616: Insufficient validation in vga(4) may allow an attacker to gain
617: root privileges on some i386 systems.</a>
1.339 deraadt 618: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 619: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 620: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 621: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
622: found by Chris Evans.</a>
1.339 deraadt 623: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 624: Several problems have been found in OpenSSL.</a>
1.339 deraadt 625: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 626: httpd(8) does not sanitize the Expect header from an HTTP request
627: when it is reflected back in an error message, which might allow
628: cross-site scripting (XSS) style attacks.</a>
629: </ul>
630:
631: <li>
1.321 brad 632: <a name="39"></a>
633:
634: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
635: These are the OpenBSD 3.9 advisories -- all these problems are solved
636: in <a href=anoncvs.html>OpenBSD current</a> and the
637: <a href=stable.html>patch branch</a>.
638:
639: <p>
640: <ul>
1.343 deraadt 641: <li><a href="errata39.html#022_route6">Apr 23, 2007:
642: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 643: against hosts and networks.</a>
1.342 mbalmer 644: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
645: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 646: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
647: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 648: <li><a href="errata39.html#agp">Jan 3, 2007:
649: Insufficient validation in vga(4) may allow an attacker to gain
650: root privileges on some i386 systems.</a>
1.336 brad 651: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 652: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 653: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 654: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 655: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 656: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 657: found by Chris Evans.</a>
1.333 deraadt 658: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 659: Several problems have been found in OpenSSL.</a>
1.333 deraadt 660: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 661: httpd(8) does not sanitize the Expect header from an HTTP request
662: when it is reflected back in an error message, which might allow
663: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 664: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 665: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
666: possible for an attacker to construct an invalid signature which
667: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 668: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 669: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 670: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 671: Due to the failure to correctly validate LCP configuration option
672: lengths, it is possible for an attacker to send LCP packets via an
673: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 674: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 675: A problem in isakmpd(8) caused IPsec to run partly without replay
676: protection.</a>
1.333 deraadt 677: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 678: It is possible to cause the kernel to panic when more than the default
679: number of sempahores have been allocated.</a>
1.333 deraadt 680: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 681: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
682: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
683: option.</a>
1.333 deraadt 684: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 685: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 686: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 687: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
688: overflow.</a>
1.333 deraadt 689: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 690: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 691: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 692: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 693: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 694: A race condition has been reported to exist in the handling by sendmail
695: of asynchronous signals.</a>
696: </ul>
697:
698: <li>
1.318 deraadt 699: <a name="38"></a>
700:
701: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
702: These are the OpenBSD 3.8 advisories -- all these problems are solved
703: in <a href=anoncvs.html>OpenBSD current</a> and the
704: <a href=stable.html>patch branch</a>.
705:
706: <p>
707: <ul>
1.332 brad 708: <li><a href="errata38.html#ssh2">Oct 12, 2006:
709: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 710: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 711: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 712: found by Chris Evans.</a>
713: <li><a href="errata38.html#openssl2">Oct 7, 2006:
714: Several problems have been found in OpenSSL.</a>
715: <li><a href="errata38.html#httpd2">Oct 7, 2006:
716: httpd(8) does not sanitize the Expect header from an HTTP request
717: when it is reflected back in an error message, which might allow
718: cross-site scripting (XSS) style attacks.</a>
1.329 brad 719: <li><a href="errata38.html#openssl">Sep 8, 2006:
720: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
721: possible for an attacker to construct an invalid signature which
722: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 723: <li><a href="errata38.html#bind">Sep 8, 2006:
724: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 725: <li><a href="errata38.html#sppp">Sep 2, 2006:
726: Due to the failure to correctly validate LCP configuration option
727: lengths, it is possible for an attacker to send LCP packets via an
728: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 729: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
730: A problem in isakmpd(8) caused IPsec to run partly without replay
731: protection.</a>
732: <li><a href="errata38.html#sem">Aug 25, 2006:
733: It is possible to cause the kernel to panic when more than the default
734: number of sempahores have been allocated.</a>
735: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
736: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
737: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
738: option.</a>
739: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
740: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 741: <li><a href="errata38.html#httpd">Jul 30, 2006:
742: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
743: overflow.</a>
1.324 brad 744: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
745: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 746: <li><a href="errata38.html#xorg">May 2, 2006:
747: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 748: <li><a href="errata38.html#sendmail">Mar 25, 2006:
749: A race condition has been reported to exist in the handling by sendmail
750: of asynchronous signals.</a>
751: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 752: Josh Bressers has reported a weakness in OpenSSH caused due to the
753: insecure use of the system(3) function in scp(1) when performing copy
754: operations using filenames that are supplied by the user from the
755: command line.</a>
1.321 brad 756: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 757: Do not allow users to trick suid programs into re-opening files via
758: /dev/fd.</a>
1.321 brad 759: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 760: A buffer overflow has been found in the Perl interpreter with the
761: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 762: </ul>
763:
764: <li>
1.312 david 765: <a name="37"></a>
766:
767: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
768: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 769: in <a href="anoncvs.html">OpenBSD current</a>. The
770: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
771: you should update your machine.
1.312 david 772:
773: <p>
774: <ul>
1.322 brad 775: <li><a href="errata37.html#xorg">May 2, 2006:
776: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 777: <li><a href="errata37.html#sendmail">Mar 25, 2006:
778: A race condition has been reported to exist in the handling by sendmail
779: of asynchronous signals.</a>
1.320 brad 780: <li><a href="errata37.html#ssh">Feb 12, 2006:
781: Josh Bressers has reported a weakness in OpenSSH caused due to the
782: insecure use of the system(3) function in scp(1) when performing copy
783: operations using filenames that are supplied by the user from the
784: command line.</a>
1.319 brad 785: <li><a href="errata37.html#fd">Jan 5, 2006:
786: Do not allow users to trick suid programs into re-opening files via
787: /dev/fd.</a>
788: <li><a href="errata37.html#perl">Jan 5, 2006:
789: A buffer overflow has been found in the Perl interpreter with the
790: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 791: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 792: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 793: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 794: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 795: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 796: Fix a race condition in sudo(8) that could allow a user
1.315 millert 797: to run arbitrary commands.</a>
1.318 deraadt 798: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 799: Fix a buffer overflow, memory leaks, and NULL pointer
800: dereference in cvs(1).</a>
1.312 david 801: </ul>
802:
803: <li>
1.301 miod 804: <a name="36"></a>
805:
806: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
807: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 808: in <a href="anoncvs.html">OpenBSD current</a>. The
809: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
810: you should update your machine.
1.301 miod 811:
812: <p>
1.302 markus 813: <ul>
1.317 millert 814: <li><a href="errata36.html#libz2">Jul 21, 2005:
815: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 816: <li><a href="errata36.html#libz">Jul 6, 2005:
817: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 818: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 819: Fix a race condition in sudo(8) that could allow a user
1.315 millert 820: to run arbitrary commands.</a>
1.311 deraadt 821: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 822: Fix a buffer overflow, memory leaks, and NULL pointer
823: dereference in cvs(1).</a>
1.311 deraadt 824: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 825: Due to buffer overflows in telnet(1), a malicious
826: server or man-in-the-middle attack could allow
827: execution of arbitrary code with the privileges of
828: the user invoking telnet(1).</a>
1.311 deraadt 829: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 830: More stringent checking should be done in the copy(9)
831: functions to prevent their misuse.</a>
1.311 deraadt 832: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 833: More stringent checking should be done in the copy(9)
834: functions to prevent their misuse.</a>
1.311 deraadt 835: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 836: httpd(8)'s mod_include module fails to properly validate
837: the length of user supplied tag strings prior to copying
1.305 brad 838: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 839: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 840: On systems running isakmpd(8) it is possible for a local
841: user to cause kernel memory corruption and system panic by
1.303 markus 842: setting ipsec(4) credentials on a socket.</a>
1.302 markus 843: </ul>
1.301 miod 844:
845: <li>
1.288 matthieu 846: <a name="35"></a>
1.279 deraadt 847:
1.294 david 848: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 849: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 850: in <a href="anoncvs.html">OpenBSD current</a>. The
851: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
852: you should update your machine.
1.279 deraadt 853:
854: <p>
855: <ul>
1.310 brad 856: <li><a href="errata35.html#cvs4">Apr 28, 2005:
857: Fix a buffer overflow, memory leaks, and NULL pointer
858: dereference in cvs(1).</a>
1.309 brad 859: <li><a href="errata35.html#telnet">Mar 30, 2005:
860: Due to buffer overflows in telnet(1), a malicious
861: server or man-in-the-middle attack could allow
862: execution of arbitrary code with the privileges of
863: the user invoking telnet(1).</a>
1.308 brad 864: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 865: More stringent checking should be done in the copy(9)
866: functions to prevent their misuse.</a>
1.306 brad 867: <li><a href="errata35.html#locore">Feb 28, 2005:
868: More stringent checking should be done in the copy(9)
869: functions to prevent their misuse.</a>
1.304 brad 870: <li><a href="errata35.html#httpd3">Jan 12, 2005:
871: httpd(8)'s mod_include module fails to properly validate
872: the length of user supplied tag strings prior to copying
1.305 brad 873: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 874: <li><a href="errata35.html#pfkey">Dec 14, 2004:
875: On systems running isakmpd(8) it is possible for a local
876: user to cause kernel memory corruption and system panic by
1.303 markus 877: setting ipsec(4) credentials on a socket.</a>
1.301 miod 878: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 879: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 880: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 881: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 882: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 883: httpd(8)'s mod_rewrite module can be made to write one zero byte in
884: an arbitrary memory position outside of a char array, causing a DoS
885: or possibly buffer overflows.</a>
1.301 miod 886: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 887: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 888: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 889: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 890: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 891: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 892: Multiple remote vulnerabilities have been found in the cvs(1)
893: server which can be used by CVS clients to crash or execute
1.293 brad 894: arbitrary code on the server.</a>
1.301 miod 895: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 896: kdc(8) performs inadequate checking of request fields, leading
897: to the possibility of principal impersonation from other
898: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 899: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 900: xdm(1) ignores the requestPort resource and creates a
1.293 brad 901: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 902: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 903: A buffer overflow in the cvs(1) server has been found,
904: which can be used by CVS clients to execute arbitrary code on
1.293 brad 905: the server.</a>
1.301 miod 906: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 907: Integer overflow problems were found in procfs, allowing
1.293 brad 908: reading of arbitrary kernel memory.</a>
1.301 miod 909: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 910: Pathname validation problems have been found in cvs(1),
911: allowing clients and servers access to files outside the
1.293 brad 912: repository or local CVS tree.</a>
1.279 deraadt 913: </ul>
914:
915: <p>
916: <li>
1.288 matthieu 917: <a name="34"></a>
1.261 david 918:
1.294 david 919: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 920: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 921: in <a href="anoncvs.html">OpenBSD current</a>. The
922: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
923: you should update your machine.
1.261 david 924: <p>
925: <ul>
1.302 markus 926: <li><a href="errata34.html#pfkey">Dec 14, 2004:
927: On systems running isakmpd(8) it is possible for a local
928: user to cause kernel memory corruption and system panic by
1.303 markus 929: setting ipsec(4) credentials on a socket.</a>
1.298 brad 930: <li><a href="errata34.html#xpm">Sep 16, 2004:
931: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 932: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
933: httpd(8)'s mod_rewrite module can be made to write one zero byte in
934: an arbitrary memory position outside of a char array, causing a DoS
935: or possibly buffer overflows.</a>
1.294 david 936: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 937: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 938: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 939: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 940: an attacker can delete IPsec tunnels at will.</a>
1.294 david 941: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 942: Multiple remote vulnerabilities have been found in the cvs(1)
943: server which can be used by CVS clients to crash or execute
1.293 brad 944: arbitrary code on the server.</a>
1.294 david 945: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 946: kdc(8) performs inadequate checking of request fields, leading
947: to the possibility of principal impersonation from other
948: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 949: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 950: A buffer overflow in the cvs(1) server has been found,
951: which can be used by CVS clients to execute arbitrary code on
952: the server.</a>
1.294 david 953: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 954: Integer overflow problems were found in procfs, allowing
955: reading of arbitrary kernel memory.</a>
1.294 david 956: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 957: Pathname validation problems have been found in cvs(1),
958: allowing clients and servers access to files outside the
959: repository or local CVS tree.</a>
1.294 david 960: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 961: A missing check for a NULL-pointer dereference may allow a
1.281 otto 962: remote attacker to crash applications using OpenSSL.</a>
1.294 david 963: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 964: Defects in the payload validation and processing functions of
965: isakmpd have been discovered. An attacker could send malformed
966: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 967: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 968: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
969: access module, using IP addresses without a netmask on big endian
970: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 971: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 972: An IPv6 MTU handling problem exists that could be used by an
973: attacker to cause a denial of service attack.</a>
1.294 david 974: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 975: A reference counting bug in shmat(2) could be used to write to
976: kernel memory under certain circumstances.</a>
1.294 david 977: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 978: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 979: by Thomas Walpuski.</a>
1.294 david 980: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 981: It may be possible for a local user to overrun the stack in
982: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 983: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 984: The use of certain ASN.1 encodings or malformed public keys may
985: allow an attacker to mount a denial of service attack against
986: applications linked with ssl(3).</a>
1.261 david 987: </ul>
988:
989: <li>
1.288 matthieu 990: <a name="33"></a>
1.246 deraadt 991:
1.294 david 992: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 993: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 994: in <a href="anoncvs.html">OpenBSD current</a>. The
995: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 996: you should update your machine.
1.246 deraadt 997: <p>
998: <ul>
1.294 david 999: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 1000: Pathname validation problems have been found in cvs(1),
1001: allowing clients and servers access to files outside the
1002: repository or local CVS tree.</a>
1.294 david 1003: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 1004: A missing check for a NULL-pointer dereference may allow a
1.281 otto 1005: remote attacker to crash applications using OpenSSL.</a>
1.294 david 1006: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 1007: Defects in the payload validation and processing functions of
1008: isakmpd have been discovered. An attacker could send malformed
1009: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 1010: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 1011: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
1012: access module, using IP addresses without a netmask on big endian
1013: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 1014: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 1015: An IPv6 MTU handling problem exists that could be used by an
1016: attacker to cause a denial of service attack.</a>
1.294 david 1017: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 1018: A reference counting bug in shmat(2) could be used to write to
1019: kernel memory under certain circumstances.</a>
1.294 david 1020: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 1021: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1022: by Thomas Walpuski.</a>
1.294 david 1023: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 1024: It may be possible for a local user to execute arbitrary code
1025: resulting in escalation of privileges due to a stack overrun
1026: in compat_ibcs2(8).</a>
1.294 david 1027: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 1028: The use of certain ASN.1 encodings or malformed public keys may
1029: allow an attacker to mount a denial of service attack against
1030: applications linked with ssl(3).</a>
1.294 david 1031: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 1032: Access of freed memory in pf(4) could be used to
1.260 margarid 1033: remotely panic a machine using scrub rules.</a>
1.294 david 1034: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 1035: A buffer overflow in the address parsing in
1036: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1037: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 1038: OpenSSH versions prior to 3.7 contains a buffer management error
1039: that is potentially exploitable.</a>
1.294 david 1040: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 1041: Root may be able to reduce the security level by taking advantage of
1042: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 1043: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 1044: An improper bounds check in the kernel may allow a local user
1045: to panic the kernel.</a>
1.294 david 1046: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1047: An off-by-one error exists in the C library function realpath(3)
1048: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1049: </ul>
1050:
1.265 miod 1051:
1.247 david 1052: <p>
1.246 deraadt 1053: <li>
1.288 matthieu 1054: <a name="32"></a>
1.224 deraadt 1055:
1.294 david 1056: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 1057: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 1058: in <a href="anoncvs.html">OpenBSD current</a>. The
1059: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 1060: you should update your machine.
1.224 deraadt 1061: <p>
1062: <ul>
1.294 david 1063: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1064: The use of certain ASN.1 encodings or malformed public keys may
1065: allow an attacker to mount a denial of service attack against
1066: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1067: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 1068: Access of freed memory in pf(4) could be used to
1.260 margarid 1069: remotely panic a machine using scrub rules.</a>
1.294 david 1070: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1071: A buffer overflow in the address parsing in
1072: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1073: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1074: OpenSSH versions prior to 3.7 contains a buffer management error
1075: that is potentially exploitable.</a>
1.294 david 1076: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1077: Fix for a potential security issue in
1078: sendmail(8) with respect to DNS maps.</a>
1.294 david 1079: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1080: An off-by-one error exists in the C library function realpath(3)
1081: may allow an attacker to gain escalated privileges.</a>
1.294 david 1082: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1083: A buffer overflow in the address parsing in
1084: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1085: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1086: A cryptographic weaknesses in the Kerberos v4 protocol can be
1087: exploited on Kerberos v5 as well.</a>
1.294 david 1088: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1089: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1090: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1091: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1092: Various SSL and TLS operations in OpenSSL are vulnerable to
1093: timing attacks.</a>
1.294 david 1094: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1095: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1096: privileges to user daemon.</a>
1.294 david 1097: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1098: A buffer overflow in the envelope comments processing in
1099: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1100: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1101: httpd(8) leaks file inode numbers via ETag header as well as
1102: child PIDs in multipart MIME boundary generation. This could
1103: lead, for example, to NFS exploitation because it uses inode
1104: numbers as part of the file handle.</a>
1.294 david 1105: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1106: In ssl(8) an information leak can occur via timing by performing
1107: a MAC computation even if incorrect block cipher padding has
1108: been found, this is a countermeasure. Also, check for negative
1109: sizes, in allocation routines.</a>
1.294 david 1110: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1111: A double free exists in cvs(1) that could lead to privilege
1112: escalation for cvs configurations where the cvs command is
1.233 margarid 1113: run as a privileged user.</a>
1.294 david 1114: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1115: A buffer overflow exists in named(8) that could lead to a
1116: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1117: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1118: A logic error in the pool kernel memory allocator could cause
1119: memory corruption in low-memory situations, causing the system
1120: to crash.</a>
1.294 david 1121: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1122: An attacker can bypass smrsh(8)'s restrictions and execute
1123: arbitrary commands with the privileges of his own account.</a>
1.294 david 1124: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1125: Network bridges running pf with scrubbing enabled could cause
1126: mbuf corruption, causing the system to crash.</a>
1.294 david 1127: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1128: A buffer overflow can occur in the kadmind(8) daemon, leading
1129: to possible remote crash or exploit.</a>
1.224 deraadt 1130: </ul>
1131:
1.227 miod 1132: <p>
1133: <li>
1.288 matthieu 1134: <a name="31"></a>
1.203 deraadt 1135:
1.294 david 1136: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 1137: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 1138: in <a href="anoncvs.html">OpenBSD current</a>. The
1139: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1140: you should update your machine.
1.203 deraadt 1141:
1142: <p>
1143: <ul>
1.294 david 1144: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1145: A buffer overflow in the address parsing in
1146: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1147: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1148: A cryptographic weaknesses in the Kerberos v4 protocol can be
1149: exploited on Kerberos v5 as well.</a>
1.294 david 1150: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1151: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1152: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1153: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1154: Various SSL and TLS operations in OpenSSL are vulnerable to
1155: timing attacks.</a>
1.294 david 1156: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1157: A buffer overflow in lprm(1) may allow an attacker to gain
1158: root privileges.</a>
1.294 david 1159: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1160: A buffer overflow in the envelope comments processing in
1161: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1162: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1163: In ssl(8) an information leak can occur via timing by performing
1164: a MAC computation even if incorrect block cipher padding has
1165: been found, this is a countermeasure. Also, check for negative
1166: sizes, in allocation routines.</a>
1.294 david 1167: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1168: A double free exists in cvs(1) that could lead to privilege
1169: escalation for cvs configurations where the cvs command is
1.392 tobias 1170: run as a privileged user.</a>
1.294 david 1171: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1172: A buffer overflow exists in named(8) that could lead to a
1173: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1174: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1175: Incorrect argument checking in the getitimer(2) system call
1176: may allow an attacker to crash the system.</a>
1.294 david 1177: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1178: An attacker can bypass smrsh(8)'s restrictions and execute
1179: arbitrary commands with the privileges of his own account.</a>
1.294 david 1180: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1181: A buffer overflow can occur in the kadmind(8) daemon, leading
1182: to possible remote crash or exploit.</a>
1.294 david 1183: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1184: Incorrect argument checking in the setitimer(2) system call
1185: may allow an attacker to write to kernel memory.</a>
1.294 david 1186: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1187: An insufficient boundary check in the select system call
1.220 miod 1188: allows an attacker to overwrite kernel memory and execute arbitrary code
1189: in kernel context.</a>
1.294 david 1190: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1191: Several remote buffer overflows can occur in the SSL2 server and SSL3
1192: client of the ssl(8) library, as in the ASN.1 parser code in the
1193: crypto(3) library, all of them being potentially remotely
1194: exploitable.</a>
1.294 david 1195: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1196: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1197: possible remote crash.</a>
1.294 david 1198: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1199: A race condition exists in the pppd(8) daemon which may cause it to
1200: alter the file permissions of an arbitrary file.</a>
1.294 david 1201: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1202: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1203: crash.</a>
1.294 david 1204: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1205: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1206: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1207: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1208: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1209: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1210: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1211: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1212: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1213: input validation error that can result in an integer overflow and
1214: privilege escalation.</a>
1.294 david 1215: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1216: A buffer overflow can occur during the interpretation of chunked
1217: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1218: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1219: Under certain conditions, on systems using YP with netgroups
1220: in the password database, it is possible that sshd(8) does
1221: ACL checks for the requested user name but uses the password
1222: database entry of a different user for authentication. This
1223: means that denied users might authenticate successfully
1224: while permitted users could be locked out.</a>
1.294 david 1225: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1226: A race condition exists that could defeat the kernel's
1227: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1228: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1229: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1230: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1231: A local user can gain super-user privileges due to a buffer
1232: overflow in sshd(8) if AFS has been configured on the system
1233: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1234: in the sshd_config file.</a>
1.203 deraadt 1235: </ul>
1236:
1.235 miod 1237: <p>
1.203 deraadt 1238: <li>
1.288 matthieu 1239: <a name="30"></a>
1.187 deraadt 1240:
1.294 david 1241: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1242: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1243: in <a href="anoncvs.html">OpenBSD current</a>. The
1244: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1245: you should update your machine.
1.187 deraadt 1246:
1247: <p>
1248: <ul>
1.294 david 1249: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1250: A buffer overflow exists in named(8) that could lead to a
1251: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1252: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1253: Incorrect argument checking in the getitimer(2) system call
1254: may allow an attacker to crash the system.</a>
1.294 david 1255: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1256: An attacker can bypass smrsh(8)'s restrictions and execute
1257: arbitrary commands with the privileges of his own account.</a>
1.294 david 1258: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1259: A buffer overflow can occur in the kadmind(8) daemon, leading
1260: to possible remote crash or exploit.</a>
1.294 david 1261: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1262: Incorrect argument checking in the setitimer(2) system call
1263: may allow an attacker to write to kernel memory.</a>
1.294 david 1264: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1265: An insufficient boundary check in the select and poll system calls
1266: allows an attacker to overwrite kernel memory and execute arbitrary code
1267: in kernel context.</a>
1.294 david 1268: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1269: Several remote buffer overflows can occur in the SSL2 server and SSL3
1270: client of the ssl(8) library, as in the ASN.1 parser code in the
1271: crypto(3) library, all of them being potentially remotely
1272: exploitable.</a>
1.294 david 1273: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1274: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1275: possible remote crash.</a>
1.294 david 1276: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1277: A race condition exists in the pppd(8) daemon which may cause it to
1278: alter the file permissions of an arbitrary file.</a>
1.294 david 1279: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1280: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1281: crash.</a>
1.294 david 1282: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1283: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1284: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1285: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1286: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1287: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1288: input validation error that can result in an integer overflow and
1289: privilege escalation.</a>
1.294 david 1290: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1291: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1292: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1293: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1294: A buffer overflow can occur during the interpretation of chunked
1295: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1296: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1297: A race condition exists that could defeat the kernel's
1298: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1299: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1300: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1301: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1302: A local user can gain super-user privileges due to a buffer
1303: overflow in sshd(8) if AFS has been configured on the system
1304: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1305: in the sshd_config file.</a>
1.294 david 1306: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1307: The mail(1) was interpreting tilde escapes even when invoked
1308: in non-interactive mode. As mail(1) is called as root from cron,
1309: this can lead to a local root compromise.</a>
1.294 david 1310: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1311: Under certain conditions, on systems using YP with netgroups in
1312: the password database, it is possible for the rexecd(8) and rshd(8)
1313: daemons to execute a shell from a password database entry for a
1314: different user. Similarly, atrun(8) may change to the wrong
1315: home directory when running jobs.</a>
1.294 david 1316: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1317: A potential double free() exists in the zlib library;
1318: this is not exploitable on OpenBSD.
1319: The kernel also contains a copy of zlib; it is not
1320: currently known if the kernel zlib is exploitable.</a>
1.294 david 1321: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1322: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1323: may allow a local user to gain super-user privileges.</a>
1.294 david 1324: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1325: A race condition between the ptrace(2) and execve(2) system calls
1326: allows an attacker to modify the memory contents of suid/sgid
1327: processes which could lead to compromise of the super-user account.</a>
1.294 david 1328: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1329: There is a security hole in sudo(8) that can be exploited
1330: when the Postfix sendmail replacement is installed that may
1331: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1332: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1333: An attacker can trick a machine running the lpd daemon into
1334: creating new files in the root directory from a machine with
1335: remote line printer access.</a>
1.294 david 1336: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1337: The vi.recover script can be abused in such a way as
1338: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1339: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1340: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1341: resulting in a crash.</a>
1.294 david 1342: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1343: A security hole that may allow an attacker to partially authenticate
1344: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1345: </ul>
1346:
1347: <p>
1348: <li>
1.288 matthieu 1349: <a name="29"></a>
1.173 deraadt 1350:
1.294 david 1351: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1352: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1353: in <a href="anoncvs.html">OpenBSD current</a>. The
1354: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1355: you should update your machine.
1356:
1.173 deraadt 1357:
1358: <p>
1359: <ul>
1.294 david 1360: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1361: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1362: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1363: A race condition exists that could defeat the kernel's
1364: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1365: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1366: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1367: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1368: A local user can gain super-user privileges due to a buffer
1369: overflow in sshd(8) if AFS has been configured on the system
1370: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1371: in the sshd_config file.</a>
1.294 david 1372: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1373: The mail(1) was interpreting tilde escapes even when invoked
1374: in non-interactive mode. As mail(1) is called as root from cron,
1375: this can lead to a local root compromise.</a>
1.294 david 1376: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1377: A potential double free() exists in the zlib library;
1378: this is not exploitable on OpenBSD.
1379: The kernel also contains a copy of zlib; it is not
1380: currently known if the kernel zlib is exploitable.</a>
1.294 david 1381: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1382: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1383: may allow a local user to gain super-user privileges.</a>
1.294 david 1384: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1385: A race condition between the ptrace(2) and execve(2) system calls
1386: allows an attacker to modify the memory contents of suid/sgid
1387: processes which could lead to compromise of the super-user account.</a>
1.294 david 1388: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1389: There is a security hole in sudo(8) that can be exploited
1390: when the Postfix sendmail replacement is installed that may
1391: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1392: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1393: An attacker can trick a machine running the lpd daemon into
1394: creating new files in the root directory from a machine with
1395: remote line printer access.</a>
1.294 david 1396: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1397: The vi.recover script can be abused in such a way as
1398: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1399: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1400: A security hole exists in uuxqt(8) that may allow an
1401: attacker to gain root privileges.</a>
1.294 david 1402: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1403: A security hole exists in lpd(8) that may allow an
1404: attacker to gain root privileges if lpd is running.</a>
1.294 david 1405: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1406: A security hole exists in sendmail(8) that may allow an
1407: attacker on the local host to gain root privileges.</a>
1.294 david 1408: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1409: A kernel buffer overflow in the NFS code can be used to execute
1410: arbitrary code by users with mount privileges (only root by
1.181 millert 1411: default).</a>
1.294 david 1412: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1413: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1414: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1415: sshd(8) allows users to delete arbitrary files named "cookies"
1416: if X11 forwarding is enabled. X11 forwarding is disabled
1417: by default.</a>
1.294 david 1418: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1419: Programs using the fts routines can be tricked into changing
1420: into the wrong directory.</a>
1.294 david 1421: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1422: Sendmail signal handlers contain unsafe code,
1423: leading to numerous race conditions.</a>
1.173 deraadt 1424: </ul>
1425:
1426: <p>
1427: <li>
1.288 matthieu 1428: <a name="28"></a>
1.152 deraadt 1429:
1.294 david 1430: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1431: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1432: in <a href="anoncvs.html">OpenBSD current</a>. The
1433: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1434: you should update your machine.
1435:
1.152 deraadt 1436:
1437: <p>
1438: <ul>
1.294 david 1439: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1440: A security hole exists in uuxqt(8) that may allow an
1441: attacker to gain root privileges.</a>
1.294 david 1442: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1443: A security hole exists in lpd(8) that may allow an
1444: attacker to gain root privileges if lpd is running.</a>
1.294 david 1445: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1446: A security hole exists in sendmail(8) that may allow an
1447: attacker on the local host to gain root privileges.</a>
1.294 david 1448: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1449: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1450: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1451: Programs using the fts routines can be tricked into changing
1452: into the wrong directory.</a>
1.294 david 1453: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1454: Sendmail signal handlers contain unsafe code,
1455: leading to numerous race conditions.</a>
1.294 david 1456: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1457: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1458: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1459: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1460: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1461: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1462: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1463: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1464: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1465: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1466: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1467: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1468: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1469: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1470: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1471: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1472: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1473: rnd(4) did not use all of its input when written to.</a>
1.294 david 1474: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1475: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1476: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1477: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1478: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1479: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1480: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1481: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1482: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1483: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1484: </ul>
1485:
1486: <p>
1487: <li>
1.288 matthieu 1488: <a name="27"></a>
1.124 deraadt 1489:
1.294 david 1490: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1491: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1492: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1493: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1494:
1495: <p>
1496: <ul>
1.294 david 1497: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1498: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1499: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1500: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1501: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1502: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1503: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1504: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1505: (patch included)</a>
1.294 david 1506: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1507: X11 libraries have 2 potential overflows in xtrans code.
1508: (patch included)</a>
1.294 david 1509: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1510: Apache mod_rewrite and mod_vhost_alias modules could expose files
1511: on the server in certain configurations if used.
1512: (patch included)</a>
1.294 david 1513: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1514: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1515: TERMPATH and TERMCAP environment variables as it should.
1516: (patch included)</a>
1.294 david 1517: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1518: There are printf-style format string bugs in several privileged
1519: programs. (patch included)</a>
1.294 david 1520: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1521: libcurses honored terminal descriptions in the $HOME/.terminfo
1522: directory as well as in the TERMCAP environment variable for
1523: setuid and setgid applications.
1.146 deraadt 1524: (patch included)</a>
1.294 david 1525: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1526: A format string vulnerability exists in talkd(8).
1527: (patch included)</a>
1.294 david 1528: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1529: A format string vulnerability exists in the pw_error() function of the
1530: libutil library, yielding localhost root through chpass(1).
1531: (patch included)</a>
1.294 david 1532: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1533: Bad ESP/AH packets could cause a crash under certain conditions.
1534: (patch included)</a>
1.294 david 1535: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1536: A format string vulnerability (localhost root) exists in xlock(1).
1537: (patch included)</a>
1.294 david 1538: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1539: Various bugs found in X11 libraries have various side effects, almost
1540: completely denial of service in OpenBSD.
1541: (patch included)</a>
1.294 david 1542: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1543: Just like pretty much all the other unix ftp daemons
1544: on the planet, ftpd had a remote root hole in it.
1545: Luckily, ftpd was not enabled by default.
1.137 deraadt 1546: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1547: (patch included)</a>
1.294 david 1548: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1549: Mopd, very rarely used, contained some buffer overflows.
1550: (patch included)</a>
1.294 david 1551: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1552: libedit would check for a <b>.editrc</b> file in the current
1553: directory. Not known to be a real security issue, but a patch
1554: is available anyways.
1555: (patch included)</a>
1.294 david 1556: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1557: A serious bug in dhclient(8) could allow strings from a
1558: malicious dhcp server to be executed in the shell as root.
1559: (patch included)</a>
1.294 david 1560: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1561: A serious bug in isakmpd(8) policy handling wherein
1562: policy verification could be completely bypassed in isakmpd.
1563: (patch included)</a>
1.294 david 1564: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1565: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1566: should not be used, and results in security problems on
1567: other operating systems.</a>
1.294 david 1568: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1569: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1570: (patch included)</a>
1.294 david 1571: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1572: Improper use of ipf <i>keep-state</i> rules can result
1573: in firewall rules being bypassed. (patch included)</a>
1574:
1.124 deraadt 1575: </ul>
1576:
1577: <p>
1578: <li>
1.288 matthieu 1579: <a name="26"></a>
1.119 deraadt 1580:
1.294 david 1581: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1582: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1583: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1584: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1585:
1586: <p>
1587: <ul>
1.294 david 1588: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1589: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1590: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1591: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1592: Improper use of ipf <i>keep-state</i> rules can result
1593: in firewall rules being bypassed. (patch included)</a>
1.294 david 1594: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1595: xlockmore has a bug which a localhost attacker can use to gain
1596: access to the encrypted root password hash (which is normally
1.245 miod 1597: encoded using blowfish</a> (see
1.294 david 1598: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1599: crypt(3)</a>)
1.245 miod 1600: (patch included).
1.294 david 1601: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1602: Systems running with procfs enabled and mounted are
1603: vulnerable to a very tricky exploit. procfs is not
1604: mounted by default.
1605: (patch included).</a>
1.294 david 1606: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1607: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1608: thus exposing the system to a race where the aliases file
1609: did not exist.
1.119 deraadt 1610: (patch included).</a>
1.294 david 1611: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1612: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1613: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1614: A buffer overflow in the RSAREF code included in the
1615: USA version of libssl, is possibly exploitable in
1616: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1617: (patch included).<br></a>
1618: <strong>Update:</strong> Turns out that this was not exploitable
1619: in any of the software included in OpenBSD 2.6.
1.294 david 1620: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1621: Any user could change interface media configurations, resulting in
1622: a localhost denial of service attack.
1.121 deraadt 1623: (patch included).</a>
1.119 deraadt 1624: </ul>
1625:
1626: <p>
1627: <li>
1.288 matthieu 1628: <a name="25"></a>
1.106 deraadt 1629:
1.294 david 1630: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1631: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1632: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1633: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1634:
1.96 deraadt 1635: <p>
1.104 deraadt 1636: <ul>
1.294 david 1637: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1638: In cron(8), make sure argv[] is NULL terminated in the
1639: fake popen() and run sendmail as the user, not as root.
1640: (patch included).</a>
1.294 david 1641: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1642: filesystems had an overrun in their handling of uio_offset
1643: in their readdir() routines. (These filesystems are not
1644: enabled by default). (patch included).</a>
1.294 david 1645: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1646: when we execve() a new process. (patch included).</a>
1.294 david 1647: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1648: been handled by IPsec may be transmitted as cleartext.
1649: PF_KEY SA expirations may leak kernel resources.
1650: (patch included).</a>
1.294 david 1651: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1652: motd re-writing and change the find(1) to use -execdir
1653: (patch included).</a>
1.294 david 1654: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1655: users to chflags(2) or fchflags(2) on character or block devices
1656: which they may currently be the owner of (patch included).</a>
1.294 david 1657: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1658: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1659: </ul>
1660:
1.106 deraadt 1661: <p>
1662: <li>
1.288 matthieu 1663: <a name="24"></a>
1.235 miod 1664:
1.294 david 1665: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1666: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1667: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1668: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1669:
1.96 deraadt 1670: <p>
1.75 deraadt 1671: <ul>
1.294 david 1672: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1673: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1674: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1675: another kernel crash case caused by the <strong>crashme</strong>
1676: program (patch included).</a>
1.294 david 1677: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1678: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1679: (patch included).</a>
1.294 david 1680: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1681: existed in ping(8). (patch included).</a>
1.294 david 1682: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1683: the ipq, which could permit an attacker to cause a crash.
1684: (patch included).</a>
1.294 david 1685: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1686: kernel between accept(2) and select(2) could permit an attacker
1687: to hang sockets from remote.
1688: (patch included).</a>
1.294 david 1689: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1690: bog the machine excessively and cause problems.
1691: (patch included).</a>
1.294 david 1692: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1693: DDB interacted to possibly cause a crash.
1694: (patch included).</a>
1.294 david 1695: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1696: (patch included).</a>
1.294 david 1697: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1698: problem in bootpd(8). (patch included).</a>
1.294 david 1699: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1700: exploitable problem relating to environment variables in termcap
1701: and curses. (patch included).</a>
1.294 david 1702: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1703: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1704: </ul>
1705:
1.106 deraadt 1706: <p>
1707: <li>
1.288 matthieu 1708: <a name="23"></a>
1.235 miod 1709:
1.294 david 1710: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1711: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1712: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1713: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1714:
1.96 deraadt 1715: <p>
1.53 matthieu 1716: <ul>
1.294 david 1717: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1718: problem in bootpd(8). (patch included).</a>
1.294 david 1719: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1720: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1721: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1722: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1723: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1724: chpass(1) has a file descriptor leak which allows an
1725: attacker to modify /etc/master.passwd.</a>
1.294 david 1726: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1727: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1728: should not be executed with fd slots 0, 1, or 2 free.
1729: (patch included).</a>
1.294 david 1730: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1731: libraries (patches included).</a>
1.294 david 1732: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1733: processes too permissive (4th revision patch included).</a>
1.294 david 1734: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1735: of immutable and append-only file flags. (patch included).</a>
1.294 david 1736: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1737: if IPSEC is enabled (patch included).</a>
1.294 david 1738: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1739: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1740: </ul>
1.9 deraadt 1741:
1.106 deraadt 1742: <p>
1743: <li>
1.288 matthieu 1744: <a name="22"></a>
1.235 miod 1745:
1.294 david 1746: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1747: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1748: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1749: still exist in other operating systems. (The supplied patches are for
1750: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1751:
1.96 deraadt 1752: <p>
1.9 deraadt 1753: <ul>
1.294 david 1754: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1755: packets if IPSEC is enabled (patch included).</a>
1.294 david 1756: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1757: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1758: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1759: (patch included).</a>
1.294 david 1760: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1761: (patch included).</a>
1.294 david 1762: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1763: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1764: (patch included).</a>
1.294 david 1765: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1766: export (patch included).</a>
1.112 philen 1767: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1768: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1769: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1770: Acceptance.</a>
1.294 david 1771: A patch is available <a href="errata22.html#sourceroute">here</a>.
1772: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1773: flaw (patch included).</a>
1.294 david 1774: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1775: </ul>
1776:
1.106 deraadt 1777: <p>
1778: <li>
1.288 matthieu 1779: <a name="21"></a>
1.235 miod 1780:
1.294 david 1781: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1782: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1783: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1784: exist in other operating systems. (If you are running OpenBSD 2.1, we
1785: would strongly recommend an upgrade to the newest release, as this
1786: patch list only attempts at fixing the most important security
1787: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1788: security problems. Many of those problems were solved in ways which
1789: make it hard for us to provide patches).
1790:
1.96 deraadt 1791: <p>
1.52 deraadt 1792: <ul>
1.112 philen 1793: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1794: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1795: (patch included)</a>
1.112 philen 1796: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1797: </ul>
1.51 deraadt 1798:
1.106 deraadt 1799: <p>
1800: <li>
1.288 matthieu 1801: <a name="20"></a>
1.235 miod 1802:
1.294 david 1803: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1804: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1805: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1806: exist in other operating systems. (If you are running OpenBSD 2.0, we
1807: commend you for being there back in the old days!, but you're really
1808: missing out if you don't install a new version!)
1809:
1810: <p>
1811: <ul>
1.112 philen 1812: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1813: resolver (patch included)</a>
1814: <li>Many others... if people can hunt them down, please let me know
1815: and we'll put them up here.
1816: </ul>
1.51 deraadt 1817: <p>
1.106 deraadt 1818:
1.288 matthieu 1819: <a name="watching"></a>
1.294 david 1820: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1821:
1.21 deraadt 1822: Since we take a proactive stance with security, we are continually
1823: finding and fixing new security problems. Not all of these problems
1.80 espie 1824: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1825: confirmed to be exploitable; many simple bugs we fix do turn out to
1826: have security consequences we could not predict. We do not have the
1827: time resources to make these changes available in the above format.<p>
1.21 deraadt 1828:
1829: Thus there are usually minor security fixes in the current source code
1830: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1831: guarantee that these problems are of minimal impact and unproven
1.44 ian 1832: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1833: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1834:
1.45 deraadt 1835: People who are really concerned with security can do a number of
1836: things:<p>
1.21 deraadt 1837:
1838: <ul>
1839: <li>If you understand security issues, watch our
1.294 david 1840: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1841: eye out for things which appear security related. Since
1.21 deraadt 1842: exploitability is not proven for many of the fixes we make,
1843: do not expect the relevant commit message to say "SECURITY FIX!".
1844: If a problem is proven and serious, a patch will be available
1845: here very shortly after.
1.161 horacio 1846: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1847: security-announce mailing list</a> which will notify you for every
1.186 ian 1848: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1849: and instruct you on how to patch the problem.
1.21 deraadt 1850: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1851: complete system build from time to time (read /usr/src/Makefile
1852: carefully). Users can make the assumption that the current
1853: source tree always has stronger security than the previous release.
1.45 deraadt 1854: However, building your own system from source code is not trivial;
1.397 deraadt 1855: it is nearly 850MB of source code, and problems do occur as we
1.45 deraadt 1856: transition between major releases.
1.115 ericj 1857: <li>Install a binary snapshot for your
1.80 espie 1858: architecture, which are made available fairly often. For
1.29 deraadt 1859: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1860: </ul>
1861:
1.9 deraadt 1862: <p>
1.288 matthieu 1863: <a name="reporting"></a>
1.294 david 1864: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1865:
1.5 deraadt 1866: <p> If you find a new security problem, you can mail it to
1.294 david 1867: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1868: <br>
1.5 deraadt 1869: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1870: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1871:
1.107 deraadt 1872: <p>
1.288 matthieu 1873: <a name="papers"></a>
1.294 david 1874: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1875:
1.389 lum 1876: Numerous
1.404 deraadt 1877: <a href="papers/index.html">papers</a> have been written by OpenBSD team members,
1.389 lum 1878: many dedicated to security.
1.294 david 1879: </ul>
1.1 deraadt 1880:
1.24 deraadt 1881: </body>
1882: </html>