Annotation of www/security.html, Revision 1.409
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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>
1.409 ! jca 237: <li><a href="errata55.html#003_ftp">April 9, 2014: ftp(1) defect,
! 238: failure to check the server hostname when connecting to an https
! 239: website, allowing any trusted CA-signed certificate to impersonate
! 240: any other website.</a>
1.407 deraadt 241: </ul>
1.398 sthen 242:
1.407 deraadt 243: <li><a name="54"></a>
1.398 sthen 244: <h3><font color="#e00000">OpenBSD 5.4 Security Advisories</font></h3>
245: These are the OpenBSD 5.4 advisories -- all these problems are solved
246: in <a href=anoncvs.html>OpenBSD current</a> and the
247: <a href=stable.html>patch branch</a>.
248:
249: <p>
250: <ul>
251: <li><a href="errata54.html#002_sshgcm">November 7, 2013:
252: Memory corruption in post-authentication sshd process if AES-GCM cipher
253: is selected</a>
254: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
255: <li><a href="errata54.html#004_nginx">November 21, 2013:
256: Security restriction bypass in certain nginx(8) configurations</a>
257: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 258: <li><a href="errata54.html#006_libXfont">January 10, 2014:
1.400 matthieu 259: Buffer overflow in parsing of BDF font files</a>
1.401 matthieu 260: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 deraadt 261: <li><a href="errata54.html#007_openssl">April 7, 2014:
262: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
263: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.398 sthen 264: </ul>
265:
1.407 deraadt 266: <li><a name="53"></a>
1.395 sthen 267: <h3><font color="#e00000">OpenBSD 5.3 Security Advisories</font></h3>
268: These are the OpenBSD 5.3 advisories -- all these problems are solved
269: in <a href=anoncvs.html>OpenBSD current</a> and the
270: <a href=stable.html>patch branch</a>.
271:
272: <p>
273: <ul>
1.398 sthen 274: <li><a href="errata53.html#009_sshgcm">November 7, 2013:
275: Memory corruption in post-authentication sshd process if AES-GCM cipher
276: is selected</a>
277: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4548">CVE-2013-4548</a>).
278: <li><a href="errata53.html#011_nginx">November 21, 2013:
279: Security restriction bypass in certain nginx(8) configurations</a>
280: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4547">CVE-2013-4547</a>).
1.403 sthen 281: <li><a href="errata53.html#013_libXfont">January 10, 2014:
1.402 matthieu 282: Buffer overflow in parsing of BDF font files</a>
283: (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6462">CVE-2013-6462</a>).
1.408 deraadt 284: <li><a href="errata53.html#014_openssl">April 7, 2014:
285: Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
286: heartbeat extension (RFC6520) which can result in a leak of memory contents.</a>
1.395 sthen 287: </ul>
288:
1.399 deraadt 289: <br><p><b>
290: OpenBSD 5.2 and earlier releases are not supported anymore. The following
291: paragraphs only list advisories issued while they were maintained; these
292: releases are likely to be affected by the advisories for more recent releases.
1.407 deraadt 293: </b>
294: <p>
1.399 deraadt 295:
1.395 sthen 296: <li>
1.393 sthen 297: <a name="52"></a>
298:
299: <h3><font color="#e00000">OpenBSD 5.2 Security Advisories</font></h3>
300: These are the OpenBSD 5.2 advisories -- all these problems are solved
301: in <a href=anoncvs.html>OpenBSD current</a> and the
302: <a href=stable.html>patch branch</a>.
303:
304: <p>
305: <ul>
306: None yet!
307: </ul>
308:
309: <li>
1.390 sthen 310: <a name="51"></a>
311:
312: <h3><font color="#e00000">OpenBSD 5.1 Security Advisories</font></h3>
313: These are the OpenBSD 5.1 advisories -- all these problems are solved
314: in <a href=anoncvs.html>OpenBSD current</a> and the
315: <a href=stable.html>patch branch</a>.
316:
317: <p>
318: <ul>
1.393 sthen 319: <li><a href="errata51.html#001_libcrypto">April 23, 2012:
320: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 321: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.390 sthen 322: </ul>
323:
324: <li>
1.388 miod 325: <a name="50"></a>
326:
327: <h3><font color="#e00000">OpenBSD 5.0 Security Advisories</font></h3>
328: These are the OpenBSD 5.0 advisories -- all these problems are solved
329: in <a href=anoncvs.html>OpenBSD current</a> and the
330: <a href=stable.html>patch branch</a>.
331:
332: <p>
333: <ul>
1.393 sthen 334: <li><a href="errata50.html#002_libcrypto">April 23, 2012:
335: A heap overflow vulnerability has been found in libcrypto's ASN.1
1.396 deraadt 336: parsing code</a> (<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2110">CVE-2012-2110</a>).
1.388 miod 337: </ul>
338:
339: <li>
1.387 miod 340: <a name="49"></a>
341:
342: <h3><font color="#e00000">OpenBSD 4.9 Security Advisories</font></h3>
343: These are the OpenBSD 4.9 advisories -- all these problems are solved
344: in <a href=anoncvs.html>OpenBSD current</a> and the
345: <a href=stable.html>patch branch</a>.
346:
347: <p>
348: <ul>
349: None yet!
350: </ul>
351:
352: <li>
353: <a name="48"></a>
354:
355: <h3><font color="#e00000">OpenBSD 4.8 Security Advisories</font></h3>
356: These are the OpenBSD 4.8 advisories -- all these problems are solved
357: in <a href=anoncvs.html>OpenBSD current</a> and the
358: <a href=stable.html>patch branch</a>.
359:
360: <p>
361: <ul>
362: <li><a href="errata48.html#009_pf">February 16, 2011:
363: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
364: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
365: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
366: prefixes "10.1.1.1/30") are not affected.</a>
367: <li><a href="errata48.html#008_openssl">February 11, 2011:
368: An incorrectly formatted ClientHello handshake message could cause
369: OpenSSL to parse past the end of the message. An attacker could use
370: this flaw to trigger an invalid memory access, causing a crash of an
371: application linked to OpenSSL. As well, certain applications may expose
372: the contents of parsed OCSP extensions, specifically the OCSP nonce
373: extension.
374: <br>
375: Applications are only affected if they act as a server and call
376: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
377: that nothing in the base OS uses this. Apache httpd started using this
378: in v2.3.3; this is newer than the version in ports.</a>
379: <li><a href="errata48.html#005_pf">December 17, 2010:
380: Insufficent initialization of the pf rule structure in the ioctl
381: handler may allow userland to modify kernel memory. By default root
382: privileges are needed to add or modify pf rules.</a>
383: </ul>
384:
385: <li>
1.385 jasper 386: <a name="47"></a>
387:
388: <h3><font color="#e00000">OpenBSD 4.7 Security Advisories</font></h3>
389: These are the OpenBSD 4.7 advisories -- all these problems are solved
390: in <a href=anoncvs.html>OpenBSD current</a> and the
391: <a href=stable.html>patch branch</a>.
392:
393: <p>
394: <ul>
1.387 miod 395: <li><a href="errata47.html#013_pf">February 16, 2011:
396: PF rules specifying address ranges (e.g. "10.1.1.1 - 10.1.1.5") were
397: not correctly handled on little-endian systems (alpha, amd64, arm, i386,
398: mips64el, vax). Other address types (bare addresses "10.1.1.1" and
399: prefixes "10.1.1.1/30") are not affected.</a>
400: <li><a href="errata47.html#012_openssl">February 11, 2011:
401: An incorrectly formatted ClientHello handshake message could cause
402: OpenSSL to parse past the end of the message. An attacker could use
403: this flaw to trigger an invalid memory access, causing a crash of an
404: application linked to OpenSSL. As well, certain applications may expose
405: the contents of parsed OCSP extensions, specifically the OCSP nonce
406: extension.
407: <br>
408: Applications are only affected if they act as a server and call
409: SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. It is believed
410: that nothing in the base OS uses this. Apache httpd started using this
411: in v2.3.3; this is newer than the version in ports.</a>
412: <li><a href="errata47.html#009_pf">December 17, 2010:
413: Insufficent initialization of the pf rule structure in the ioctl
414: handler may allow userland to modify kernel memory. By default root
415: privileges are needed to add or modify pf rules.</a>
416: <li><a href="errata47.html#004_pfsync">April 23, 2010:
417: The combination of pfsync and IPSEC may crash the kernel.</a>
1.385 jasper 418: <li><a href="errata47.html#003_openssl">April 14, 2010:
419: In TLS connections, certain incorrectly formatted records can
420: cause an OpenSSL client or server to crash due to a read
1.392 tobias 421: attempt at NULL.</a>
1.385 jasper 422: </ul>
423:
424: <li>
1.378 jasper 425: <a name="46"></a>
426:
427: <h3><font color="#e00000">OpenBSD 4.6 Security Advisories</font></h3>
428: These are the OpenBSD 4.6 advisories -- all these problems are solved
429: in <a href=anoncvs.html>OpenBSD current</a> and the
430: <a href=stable.html>patch branch</a>.
431:
432: <p>
433: <ul>
1.385 jasper 434: <li><a href="errata46.html#010_openssl">April 14, 2010:
435: In TLS connections, certain incorrectly formatted records can
436: cause an OpenSSL client or server to crash due to a read
1.392 tobias 437: attempt at NULL.</a>
1.384 jasper 438: <li><a href="errata46.html#006_openssl">March 12, 2010:
439: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 440: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 441: <li><a href="errata46.html#004_openssl">November 26, 2009:
442: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 443: related to renegotiation.</a>
1.378 jasper 444: </ul>
1.382 tobias 445:
446: <li>
1.373 djm 447: <a name="45"></a>
448:
449: <h3><font color="#e00000">OpenBSD 4.5 Security Advisories</font></h3>
450: These are the OpenBSD 4.5 advisories -- all these problems are solved
451: in <a href=anoncvs.html>OpenBSD current</a> and the
452: <a href=stable.html>patch branch</a>.
453:
454: <p>
455: <ul>
1.385 jasper 456: <li><a href="errata45.html#016_openssl">April 14, 2010:
457: In TLS connections, certain incorrectly formatted records can
458: cause an OpenSSL client or server to crash due to a read
1.392 tobias 459: attempt at NULL.</a>
1.385 jasper 460: <li><a href="errata45.html#012_openssl">March 12, 2010:
1.384 jasper 461: OpenSSL is susceptible to a buffer overflow due to a failure
1.392 tobias 462: to check for NULL returns from bn_wexpand function calls.</a>
1.383 sthen 463: <li><a href="errata45.html#010_openssl">November 26, 2009:
464: The SSL/TLS protocol is subject to man-in-the-middle attacks
1.392 tobias 465: related to renegotiation.</a>
1.373 djm 466: </ul>
467:
468: <li>
1.365 deraadt 469: <a name="44"></a>
470:
471: <h3><font color="#e00000">OpenBSD 4.4 Security Advisories</font></h3>
472: These are the OpenBSD 4.4 advisories -- all these problems are solved
473: in <a href=anoncvs.html>OpenBSD current</a> and the
474: <a href=stable.html>patch branch</a>.
475:
476: <p>
477: <ul>
1.372 millert 478: <li><a href="errata44.html#011_sudo">February 22, 2009:
479: sudo(8) may allow a user listed in sudoers to run a command
480: as a different user than their access rule specifies when a Unix
481: group is used in the RunAs portion of the rule.</a>
1.370 djm 482: <li><a href="errata44.html#008_bind">January 15, 2009:
483: named(8) suffered from a similar logic error that may allow
484: bypass of DSA DNSSEC signature validation.</a>
1.368 djm 485: <li><a href="errata44.html#007_openssl">January 9, 2009:
486: OpenSSL suffered from some logic errors that allowed bypass
487: of DSA/ECDSA certificate validation.</a>
1.367 brad 488: <li><a href="errata44.html#001_ndp">November 2, 2008:
489: The Neighbor Discovery Protocol (ndp) did not correctly verify
490: neighbor solicitation requests maybe allowing a nearby attacker
491: to intercept traffic.</a>
1.365 deraadt 492: </ul>
493:
494: <li>
1.357 brad 495: <a name="43"></a>
496:
497: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
498: These are the OpenBSD 4.3 advisories -- all these problems are solved
499: in <a href=anoncvs.html>OpenBSD current</a> and the
500: <a href=stable.html>patch branch</a>.
501:
502: <p>
503: <ul>
1.372 millert 504: <li><a href="errata43.html#011_sudo">February 22, 2009:
505: sudo(8) may allow a user listed in sudoers to run a command
506: as a different user than their access rule specifies when a Unix
507: group is used in the RunAs portion of the rule.</a>
1.370 djm 508: <li><a href="errata43.html#008_bind">January 15, 2009:
509: named(8) suffered from a similar logic error that may allow
510: bypass of DSA DNSSEC signature validation.</a>
1.369 djm 511: <li><a href="errata43.html#007_openssl">January 9, 2009:
1.368 djm 512: OpenSSL suffered from some logic errors that allowed bypass
513: of DSA/ECDSA certificate validation.</a>
1.382 tobias 514: <li><a href="errata43.html#006_ndp">October 2, 2008:
1.363 brad 515: The Neighbor Discovery Protocol (ndp) did not correctly verify
516: neighbor solicitation requests maybe allowing a nearby attacker
517: to intercept traffic.</a>
1.362 brad 518: <li><a href="errata43.html#004_bind">July 23, 2008:
519: A vulnerability has been found with BIND.</a>
1.361 brad 520: <li><a href="errata43.html#003_xorg">July 15, 2008:
521: Multiple vulnerabilities in X.Org.</a>
1.359 brad 522: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 523: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 524: <li><a href="errata43.html#001_openssh">March 30, 2008:
525: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 526: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 527: </ul>
528:
529: <li>
1.348 merdely 530: <a name="42"></a>
531: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
532: These are the OpenBSD 4.2 advisories -- all these problems are solved
533: in <a href=anoncvs.html>OpenBSD current</a> and the
534: <a href=stable.html>patch branch</a>.
535:
536: <p>
537: <ul>
1.364 tobias 538: <li><a href="errata42.html#015_ndp">October 2, 2008:
1.363 brad 539: The Neighbor Discovery Protocol (ndp) did not correctly verify
540: neighbor solicitation requests maybe allowing a nearby attacker
541: to intercept traffic.</a>
1.362 brad 542: <li><a href="errata42.html#013_bind">July 23, 2008:
543: A vulnerability has been found with BIND.</a>
1.361 brad 544: <li><a href="errata42.html#012_xorg2">July 15, 2008:
545: Multiple vulnerabilities in X.Org.</a>
1.359 brad 546: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 547: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 548: <li><a href="errata42.html#010_openssh">March 30, 2008:
549: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 550: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 551: <li><a href="errata42.html#009_ppp">March 7, 2008:
552: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 553: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
554: Multiple vulnerabilities in X.Org.</a>
1.351 okan 555: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
556: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 557: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 558: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 559: </ul>
560:
561: <li>
1.346 matthieu 562: <a name="41"></a>
563:
564: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
565: These are the OpenBSD 4.1 advisories -- all these problems are solved
566: in <a href=anoncvs.html>OpenBSD current</a> and the
567: <a href=stable.html>patch branch</a>.
568:
569: <p>
570: <ul>
1.359 brad 571: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 572: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 573: <li><a href="errata41.html#015_openssh">March 30, 2008:
574: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 575: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 576: <li><a href="errata41.html#014_ppp">March 7, 2008:
577: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 578: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
579: Multiple vulnerabilities in X.Org.</a>
580: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
581: The SSL_get_shared_ciphers() function in OpenSSL contains
582: an off-by-one overflow.</a>
1.350 deraadt 583: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 584: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 585: <li><a href="errata41.html#009_file">Jul 9, 2007:
586: Fix possible heap overflow in file(1).</a>
1.346 matthieu 587: <li><a href="errata41.html#005_route6">Apr 27, 2007:
588: IPv6 type 0 route headers can be used to mount a DoS attack
589: against hosts and networks.</a>
590: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
591: Multiple vulnerabilities in X.Org.</a>
592: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
593: Incorrect mbuf handling for ICMP6 packets.</a>
594: </ul>
595:
596: <li>
1.334 brad 597: <a name="40"></a>
598: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
599: These are the OpenBSD 4.0 advisories -- all these problems are solved
600: in <a href=anoncvs.html>OpenBSD current</a> and the
601: <a href=stable.html>patch branch</a>.
602:
603: <p>
604: <ul>
1.382 tobias 605: <li><a href="errata40.html#017_openssl">Oct 10, 2007:
606: The SSL_get_shared_ciphers() function in OpenSSL contains an
607: off-by-one overflow.</a>
1.350 deraadt 608: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 609: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 610: <li><a href="errata40.html#015_file">Jul 9, 2007:
611: Fix possible heap overflow in file(1).</a>
1.343 deraadt 612: <li><a href="errata40.html#012_route6">Apr 23, 2007:
613: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 614: against hosts and networks.</a>
1.342 mbalmer 615: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
616: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 617: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
618: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 619: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 620: Insufficient validation in vga(4) may allow an attacker to gain
621: root privileges on some i386 systems.</a>
1.339 deraadt 622: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 623: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 624: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 625: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
626: found by Chris Evans.</a>
1.339 deraadt 627: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 628: Several problems have been found in OpenSSL.</a>
1.339 deraadt 629: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 630: httpd(8) does not sanitize the Expect header from an HTTP request
631: when it is reflected back in an error message, which might allow
632: cross-site scripting (XSS) style attacks.</a>
633: </ul>
634:
635: <li>
1.321 brad 636: <a name="39"></a>
637:
638: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
639: These are the OpenBSD 3.9 advisories -- all these problems are solved
640: in <a href=anoncvs.html>OpenBSD current</a> and the
641: <a href=stable.html>patch branch</a>.
642:
643: <p>
644: <ul>
1.343 deraadt 645: <li><a href="errata39.html#022_route6">Apr 23, 2007:
646: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 647: against hosts and networks.</a>
1.342 mbalmer 648: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
649: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 650: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
651: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 652: <li><a href="errata39.html#agp">Jan 3, 2007:
653: Insufficient validation in vga(4) may allow an attacker to gain
654: root privileges on some i386 systems.</a>
1.336 brad 655: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 656: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 657: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 658: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 659: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 660: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 661: found by Chris Evans.</a>
1.333 deraadt 662: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 663: Several problems have been found in OpenSSL.</a>
1.333 deraadt 664: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 665: httpd(8) does not sanitize the Expect header from an HTTP request
666: when it is reflected back in an error message, which might allow
667: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 668: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 669: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
670: possible for an attacker to construct an invalid signature which
671: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 672: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 673: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 674: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 675: Due to the failure to correctly validate LCP configuration option
676: lengths, it is possible for an attacker to send LCP packets via an
677: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 678: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 679: A problem in isakmpd(8) caused IPsec to run partly without replay
680: protection.</a>
1.333 deraadt 681: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 682: It is possible to cause the kernel to panic when more than the default
683: number of sempahores have been allocated.</a>
1.333 deraadt 684: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 685: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
686: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
687: option.</a>
1.333 deraadt 688: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 689: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 690: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 691: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
692: overflow.</a>
1.333 deraadt 693: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 694: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 695: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 696: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 697: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 698: A race condition has been reported to exist in the handling by sendmail
699: of asynchronous signals.</a>
700: </ul>
701:
702: <li>
1.318 deraadt 703: <a name="38"></a>
704:
705: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
706: These are the OpenBSD 3.8 advisories -- all these problems are solved
707: in <a href=anoncvs.html>OpenBSD current</a> and the
708: <a href=stable.html>patch branch</a>.
709:
710: <p>
711: <ul>
1.332 brad 712: <li><a href="errata38.html#ssh2">Oct 12, 2006:
713: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 714: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 715: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 716: found by Chris Evans.</a>
717: <li><a href="errata38.html#openssl2">Oct 7, 2006:
718: Several problems have been found in OpenSSL.</a>
719: <li><a href="errata38.html#httpd2">Oct 7, 2006:
720: httpd(8) does not sanitize the Expect header from an HTTP request
721: when it is reflected back in an error message, which might allow
722: cross-site scripting (XSS) style attacks.</a>
1.329 brad 723: <li><a href="errata38.html#openssl">Sep 8, 2006:
724: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
725: possible for an attacker to construct an invalid signature which
726: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 727: <li><a href="errata38.html#bind">Sep 8, 2006:
728: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 729: <li><a href="errata38.html#sppp">Sep 2, 2006:
730: Due to the failure to correctly validate LCP configuration option
731: lengths, it is possible for an attacker to send LCP packets via an
732: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 733: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
734: A problem in isakmpd(8) caused IPsec to run partly without replay
735: protection.</a>
736: <li><a href="errata38.html#sem">Aug 25, 2006:
737: It is possible to cause the kernel to panic when more than the default
738: number of sempahores have been allocated.</a>
739: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
740: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
741: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
742: option.</a>
743: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
744: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 745: <li><a href="errata38.html#httpd">Jul 30, 2006:
746: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
747: overflow.</a>
1.324 brad 748: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
749: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 750: <li><a href="errata38.html#xorg">May 2, 2006:
751: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 752: <li><a href="errata38.html#sendmail">Mar 25, 2006:
753: A race condition has been reported to exist in the handling by sendmail
754: of asynchronous signals.</a>
755: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 756: Josh Bressers has reported a weakness in OpenSSH caused due to the
757: insecure use of the system(3) function in scp(1) when performing copy
758: operations using filenames that are supplied by the user from the
759: command line.</a>
1.321 brad 760: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 761: Do not allow users to trick suid programs into re-opening files via
762: /dev/fd.</a>
1.321 brad 763: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 764: A buffer overflow has been found in the Perl interpreter with the
765: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 766: </ul>
767:
768: <li>
1.312 david 769: <a name="37"></a>
770:
771: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
772: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 773: in <a href="anoncvs.html">OpenBSD current</a>. The
774: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
775: you should update your machine.
1.312 david 776:
777: <p>
778: <ul>
1.322 brad 779: <li><a href="errata37.html#xorg">May 2, 2006:
780: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 781: <li><a href="errata37.html#sendmail">Mar 25, 2006:
782: A race condition has been reported to exist in the handling by sendmail
783: of asynchronous signals.</a>
1.320 brad 784: <li><a href="errata37.html#ssh">Feb 12, 2006:
785: Josh Bressers has reported a weakness in OpenSSH caused due to the
786: insecure use of the system(3) function in scp(1) when performing copy
787: operations using filenames that are supplied by the user from the
788: command line.</a>
1.319 brad 789: <li><a href="errata37.html#fd">Jan 5, 2006:
790: Do not allow users to trick suid programs into re-opening files via
791: /dev/fd.</a>
792: <li><a href="errata37.html#perl">Jan 5, 2006:
793: A buffer overflow has been found in the Perl interpreter with the
794: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 795: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 796: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 797: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 798: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 799: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 800: Fix a race condition in sudo(8) that could allow a user
1.315 millert 801: to run arbitrary commands.</a>
1.318 deraadt 802: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 803: Fix a buffer overflow, memory leaks, and NULL pointer
804: dereference in cvs(1).</a>
1.312 david 805: </ul>
806:
807: <li>
1.301 miod 808: <a name="36"></a>
809:
810: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
811: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 812: in <a href="anoncvs.html">OpenBSD current</a>. The
813: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
814: you should update your machine.
1.301 miod 815:
816: <p>
1.302 markus 817: <ul>
1.317 millert 818: <li><a href="errata36.html#libz2">Jul 21, 2005:
819: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 820: <li><a href="errata36.html#libz">Jul 6, 2005:
821: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 822: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 823: Fix a race condition in sudo(8) that could allow a user
1.315 millert 824: to run arbitrary commands.</a>
1.311 deraadt 825: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 826: Fix a buffer overflow, memory leaks, and NULL pointer
827: dereference in cvs(1).</a>
1.311 deraadt 828: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 829: Due to buffer overflows in telnet(1), a malicious
830: server or man-in-the-middle attack could allow
831: execution of arbitrary code with the privileges of
832: the user invoking telnet(1).</a>
1.311 deraadt 833: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 834: More stringent checking should be done in the copy(9)
835: functions to prevent their misuse.</a>
1.311 deraadt 836: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 837: More stringent checking should be done in the copy(9)
838: functions to prevent their misuse.</a>
1.311 deraadt 839: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 840: httpd(8)'s mod_include module fails to properly validate
841: the length of user supplied tag strings prior to copying
1.305 brad 842: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 843: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 844: On systems running isakmpd(8) it is possible for a local
845: user to cause kernel memory corruption and system panic by
1.303 markus 846: setting ipsec(4) credentials on a socket.</a>
1.302 markus 847: </ul>
1.301 miod 848:
849: <li>
1.288 matthieu 850: <a name="35"></a>
1.279 deraadt 851:
1.294 david 852: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 853: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 854: in <a href="anoncvs.html">OpenBSD current</a>. The
855: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
856: you should update your machine.
1.279 deraadt 857:
858: <p>
859: <ul>
1.310 brad 860: <li><a href="errata35.html#cvs4">Apr 28, 2005:
861: Fix a buffer overflow, memory leaks, and NULL pointer
862: dereference in cvs(1).</a>
1.309 brad 863: <li><a href="errata35.html#telnet">Mar 30, 2005:
864: Due to buffer overflows in telnet(1), a malicious
865: server or man-in-the-middle attack could allow
866: execution of arbitrary code with the privileges of
867: the user invoking telnet(1).</a>
1.308 brad 868: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 869: More stringent checking should be done in the copy(9)
870: functions to prevent their misuse.</a>
1.306 brad 871: <li><a href="errata35.html#locore">Feb 28, 2005:
872: More stringent checking should be done in the copy(9)
873: functions to prevent their misuse.</a>
1.304 brad 874: <li><a href="errata35.html#httpd3">Jan 12, 2005:
875: httpd(8)'s mod_include module fails to properly validate
876: the length of user supplied tag strings prior to copying
1.305 brad 877: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 878: <li><a href="errata35.html#pfkey">Dec 14, 2004:
879: On systems running isakmpd(8) it is possible for a local
880: user to cause kernel memory corruption and system panic by
1.303 markus 881: setting ipsec(4) credentials on a socket.</a>
1.301 miod 882: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 883: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 884: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 885: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 886: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 887: httpd(8)'s mod_rewrite module can be made to write one zero byte in
888: an arbitrary memory position outside of a char array, causing a DoS
889: or possibly buffer overflows.</a>
1.301 miod 890: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 891: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 892: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 893: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 894: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 895: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 896: Multiple remote vulnerabilities have been found in the cvs(1)
897: server which can be used by CVS clients to crash or execute
1.293 brad 898: arbitrary code on the server.</a>
1.301 miod 899: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 900: kdc(8) performs inadequate checking of request fields, leading
901: to the possibility of principal impersonation from other
902: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 903: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 904: xdm(1) ignores the requestPort resource and creates a
1.293 brad 905: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 906: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 907: A buffer overflow in the cvs(1) server has been found,
908: which can be used by CVS clients to execute arbitrary code on
1.293 brad 909: the server.</a>
1.301 miod 910: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 911: Integer overflow problems were found in procfs, allowing
1.293 brad 912: reading of arbitrary kernel memory.</a>
1.301 miod 913: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 914: Pathname validation problems have been found in cvs(1),
915: allowing clients and servers access to files outside the
1.293 brad 916: repository or local CVS tree.</a>
1.279 deraadt 917: </ul>
918:
919: <p>
920: <li>
1.288 matthieu 921: <a name="34"></a>
1.261 david 922:
1.294 david 923: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 924: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 925: in <a href="anoncvs.html">OpenBSD current</a>. The
926: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
927: you should update your machine.
1.261 david 928: <p>
929: <ul>
1.302 markus 930: <li><a href="errata34.html#pfkey">Dec 14, 2004:
931: On systems running isakmpd(8) it is possible for a local
932: user to cause kernel memory corruption and system panic by
1.303 markus 933: setting ipsec(4) credentials on a socket.</a>
1.298 brad 934: <li><a href="errata34.html#xpm">Sep 16, 2004:
935: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 936: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
937: httpd(8)'s mod_rewrite module can be made to write one zero byte in
938: an arbitrary memory position outside of a char array, causing a DoS
939: or possibly buffer overflows.</a>
1.294 david 940: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 941: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 942: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 943: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 944: an attacker can delete IPsec tunnels at will.</a>
1.294 david 945: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 946: Multiple remote vulnerabilities have been found in the cvs(1)
947: server which can be used by CVS clients to crash or execute
1.293 brad 948: arbitrary code on the server.</a>
1.294 david 949: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 950: kdc(8) performs inadequate checking of request fields, leading
951: to the possibility of principal impersonation from other
952: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 953: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 954: A buffer overflow in the cvs(1) server has been found,
955: which can be used by CVS clients to execute arbitrary code on
956: the server.</a>
1.294 david 957: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 958: Integer overflow problems were found in procfs, allowing
959: reading of arbitrary kernel memory.</a>
1.294 david 960: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 961: Pathname validation problems have been found in cvs(1),
962: allowing clients and servers access to files outside the
963: repository or local CVS tree.</a>
1.294 david 964: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 965: A missing check for a NULL-pointer dereference may allow a
1.281 otto 966: remote attacker to crash applications using OpenSSL.</a>
1.294 david 967: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 968: Defects in the payload validation and processing functions of
969: isakmpd have been discovered. An attacker could send malformed
970: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 971: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 972: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
973: access module, using IP addresses without a netmask on big endian
974: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 975: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 976: An IPv6 MTU handling problem exists that could be used by an
977: attacker to cause a denial of service attack.</a>
1.294 david 978: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 979: A reference counting bug in shmat(2) could be used to write to
980: kernel memory under certain circumstances.</a>
1.294 david 981: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 982: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 983: by Thomas Walpuski.</a>
1.294 david 984: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 985: It may be possible for a local user to overrun the stack in
986: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 987: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 988: The use of certain ASN.1 encodings or malformed public keys may
989: allow an attacker to mount a denial of service attack against
990: applications linked with ssl(3).</a>
1.261 david 991: </ul>
992:
993: <li>
1.288 matthieu 994: <a name="33"></a>
1.246 deraadt 995:
1.294 david 996: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 997: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 998: in <a href="anoncvs.html">OpenBSD current</a>. The
999: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 1000: you should update your machine.
1.246 deraadt 1001: <p>
1002: <ul>
1.294 david 1003: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 1004: Pathname validation problems have been found in cvs(1),
1005: allowing clients and servers access to files outside the
1006: repository or local CVS tree.</a>
1.294 david 1007: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 1008: A missing check for a NULL-pointer dereference may allow a
1.281 otto 1009: remote attacker to crash applications using OpenSSL.</a>
1.294 david 1010: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 1011: Defects in the payload validation and processing functions of
1012: isakmpd have been discovered. An attacker could send malformed
1013: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 1014: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 1015: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
1016: access module, using IP addresses without a netmask on big endian
1017: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 1018: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 1019: An IPv6 MTU handling problem exists that could be used by an
1020: attacker to cause a denial of service attack.</a>
1.294 david 1021: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 1022: A reference counting bug in shmat(2) could be used to write to
1023: kernel memory under certain circumstances.</a>
1.294 david 1024: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 1025: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 1026: by Thomas Walpuski.</a>
1.294 david 1027: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 1028: It may be possible for a local user to execute arbitrary code
1029: resulting in escalation of privileges due to a stack overrun
1030: in compat_ibcs2(8).</a>
1.294 david 1031: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 1032: The use of certain ASN.1 encodings or malformed public keys may
1033: allow an attacker to mount a denial of service attack against
1034: applications linked with ssl(3).</a>
1.294 david 1035: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 1036: Access of freed memory in pf(4) could be used to
1.260 margarid 1037: remotely panic a machine using scrub rules.</a>
1.294 david 1038: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 1039: A buffer overflow in the address parsing in
1040: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1041: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 1042: OpenSSH versions prior to 3.7 contains a buffer management error
1043: that is potentially exploitable.</a>
1.294 david 1044: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 1045: Root may be able to reduce the security level by taking advantage of
1046: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 1047: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 1048: An improper bounds check in the kernel may allow a local user
1049: to panic the kernel.</a>
1.294 david 1050: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 1051: An off-by-one error exists in the C library function realpath(3)
1052: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 1053: </ul>
1054:
1.265 miod 1055:
1.247 david 1056: <p>
1.246 deraadt 1057: <li>
1.288 matthieu 1058: <a name="32"></a>
1.224 deraadt 1059:
1.294 david 1060: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 1061: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 1062: in <a href="anoncvs.html">OpenBSD current</a>. The
1063: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 1064: you should update your machine.
1.224 deraadt 1065: <p>
1066: <ul>
1.294 david 1067: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 1068: The use of certain ASN.1 encodings or malformed public keys may
1069: allow an attacker to mount a denial of service attack against
1070: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 1071: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 1072: Access of freed memory in pf(4) could be used to
1.260 margarid 1073: remotely panic a machine using scrub rules.</a>
1.294 david 1074: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 1075: A buffer overflow in the address parsing in
1076: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1077: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 1078: OpenSSH versions prior to 3.7 contains a buffer management error
1079: that is potentially exploitable.</a>
1.294 david 1080: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 1081: Fix for a potential security issue in
1082: sendmail(8) with respect to DNS maps.</a>
1.294 david 1083: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 1084: An off-by-one error exists in the C library function realpath(3)
1085: may allow an attacker to gain escalated privileges.</a>
1.294 david 1086: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 1087: A buffer overflow in the address parsing in
1088: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1089: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 1090: A cryptographic weaknesses in the Kerberos v4 protocol can be
1091: exploited on Kerberos v5 as well.</a>
1.294 david 1092: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 1093: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1094: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1095: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 1096: Various SSL and TLS operations in OpenSSL are vulnerable to
1097: timing attacks.</a>
1.294 david 1098: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 1099: A buffer overflow in lprm(1) may allow an attacker to elevate
1.392 tobias 1100: privileges to user daemon.</a>
1.294 david 1101: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 1102: A buffer overflow in the envelope comments processing in
1103: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1104: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 1105: httpd(8) leaks file inode numbers via ETag header as well as
1106: child PIDs in multipart MIME boundary generation. This could
1107: lead, for example, to NFS exploitation because it uses inode
1108: numbers as part of the file handle.</a>
1.294 david 1109: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 1110: In ssl(8) an information leak can occur via timing by performing
1111: a MAC computation even if incorrect block cipher padding has
1112: been found, this is a countermeasure. Also, check for negative
1113: sizes, in allocation routines.</a>
1.294 david 1114: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 1115: A double free exists in cvs(1) that could lead to privilege
1116: escalation for cvs configurations where the cvs command is
1.233 margarid 1117: run as a privileged user.</a>
1.294 david 1118: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 1119: A buffer overflow exists in named(8) that could lead to a
1120: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1121: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 1122: A logic error in the pool kernel memory allocator could cause
1123: memory corruption in low-memory situations, causing the system
1124: to crash.</a>
1.294 david 1125: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 1126: An attacker can bypass smrsh(8)'s restrictions and execute
1127: arbitrary commands with the privileges of his own account.</a>
1.294 david 1128: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 1129: Network bridges running pf with scrubbing enabled could cause
1130: mbuf corruption, causing the system to crash.</a>
1.294 david 1131: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 1132: A buffer overflow can occur in the kadmind(8) daemon, leading
1133: to possible remote crash or exploit.</a>
1.224 deraadt 1134: </ul>
1135:
1.227 miod 1136: <p>
1137: <li>
1.288 matthieu 1138: <a name="31"></a>
1.203 deraadt 1139:
1.294 david 1140: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 1141: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 1142: in <a href="anoncvs.html">OpenBSD current</a>. The
1143: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 1144: you should update your machine.
1.203 deraadt 1145:
1146: <p>
1147: <ul>
1.294 david 1148: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 1149: A buffer overflow in the address parsing in
1150: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1151: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 1152: A cryptographic weaknesses in the Kerberos v4 protocol can be
1153: exploited on Kerberos v5 as well.</a>
1.294 david 1154: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 1155: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 1156: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 1157: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 1158: Various SSL and TLS operations in OpenSSL are vulnerable to
1159: timing attacks.</a>
1.294 david 1160: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 1161: A buffer overflow in lprm(1) may allow an attacker to gain
1162: root privileges.</a>
1.294 david 1163: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 1164: A buffer overflow in the envelope comments processing in
1165: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 1166: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 1167: In ssl(8) an information leak can occur via timing by performing
1168: a MAC computation even if incorrect block cipher padding has
1169: been found, this is a countermeasure. Also, check for negative
1170: sizes, in allocation routines.</a>
1.294 david 1171: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 1172: A double free exists in cvs(1) that could lead to privilege
1173: escalation for cvs configurations where the cvs command is
1.392 tobias 1174: run as a privileged user.</a>
1.294 david 1175: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 1176: A buffer overflow exists in named(8) that could lead to a
1177: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1178: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 1179: Incorrect argument checking in the getitimer(2) system call
1180: may allow an attacker to crash the system.</a>
1.294 david 1181: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 1182: An attacker can bypass smrsh(8)'s restrictions and execute
1183: arbitrary commands with the privileges of his own account.</a>
1.294 david 1184: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 1185: A buffer overflow can occur in the kadmind(8) daemon, leading
1186: to possible remote crash or exploit.</a>
1.294 david 1187: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 1188: Incorrect argument checking in the setitimer(2) system call
1189: may allow an attacker to write to kernel memory.</a>
1.294 david 1190: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 1191: An insufficient boundary check in the select system call
1.220 miod 1192: allows an attacker to overwrite kernel memory and execute arbitrary code
1193: in kernel context.</a>
1.294 david 1194: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 1195: Several remote buffer overflows can occur in the SSL2 server and SSL3
1196: client of the ssl(8) library, as in the ASN.1 parser code in the
1197: crypto(3) library, all of them being potentially remotely
1198: exploitable.</a>
1.294 david 1199: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 1200: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1201: possible remote crash.</a>
1.294 david 1202: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 1203: A race condition exists in the pppd(8) daemon which may cause it to
1204: alter the file permissions of an arbitrary file.</a>
1.294 david 1205: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 1206: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1207: crash.</a>
1.294 david 1208: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 1209: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1210: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 1211: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1212: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1213: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 1214: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1215: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 1216: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1217: input validation error that can result in an integer overflow and
1218: privilege escalation.</a>
1.294 david 1219: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 1220: A buffer overflow can occur during the interpretation of chunked
1221: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1222: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 1223: Under certain conditions, on systems using YP with netgroups
1224: in the password database, it is possible that sshd(8) does
1225: ACL checks for the requested user name but uses the password
1226: database entry of a different user for authentication. This
1227: means that denied users might authenticate successfully
1228: while permitted users could be locked out.</a>
1.294 david 1229: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 1230: A race condition exists that could defeat the kernel's
1231: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1232: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 1233: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1234: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 1235: A local user can gain super-user privileges due to a buffer
1236: overflow in sshd(8) if AFS has been configured on the system
1237: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1238: in the sshd_config file.</a>
1.203 deraadt 1239: </ul>
1240:
1.235 miod 1241: <p>
1.203 deraadt 1242: <li>
1.288 matthieu 1243: <a name="30"></a>
1.187 deraadt 1244:
1.294 david 1245: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 1246: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 1247: in <a href="anoncvs.html">OpenBSD current</a>. The
1248: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 1249: you should update your machine.
1.187 deraadt 1250:
1251: <p>
1252: <ul>
1.294 david 1253: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 1254: A buffer overflow exists in named(8) that could lead to a
1255: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 1256: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 1257: Incorrect argument checking in the getitimer(2) system call
1258: may allow an attacker to crash the system.</a>
1.294 david 1259: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 1260: An attacker can bypass smrsh(8)'s restrictions and execute
1261: arbitrary commands with the privileges of his own account.</a>
1.294 david 1262: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 1263: A buffer overflow can occur in the kadmind(8) daemon, leading
1264: to possible remote crash or exploit.</a>
1.294 david 1265: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 1266: Incorrect argument checking in the setitimer(2) system call
1267: may allow an attacker to write to kernel memory.</a>
1.294 david 1268: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 1269: An insufficient boundary check in the select and poll system calls
1270: allows an attacker to overwrite kernel memory and execute arbitrary code
1271: in kernel context.</a>
1.294 david 1272: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 1273: Several remote buffer overflows can occur in the SSL2 server and SSL3
1274: client of the ssl(8) library, as in the ASN.1 parser code in the
1275: crypto(3) library, all of them being potentially remotely
1276: exploitable.</a>
1.294 david 1277: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1278: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1279: possible remote crash.</a>
1.294 david 1280: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1281: A race condition exists in the pppd(8) daemon which may cause it to
1282: alter the file permissions of an arbitrary file.</a>
1.294 david 1283: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1284: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1285: crash.</a>
1.294 david 1286: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1287: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1288: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1289: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1290: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1291: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1292: input validation error that can result in an integer overflow and
1293: privilege escalation.</a>
1.294 david 1294: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1295: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1296: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1297: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1298: A buffer overflow can occur during the interpretation of chunked
1299: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1300: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1301: A race condition exists that could defeat the kernel's
1302: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1303: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1304: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1305: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1306: A local user can gain super-user privileges due to a buffer
1307: overflow in sshd(8) if AFS has been configured on the system
1308: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1309: in the sshd_config file.</a>
1.294 david 1310: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1311: The mail(1) was interpreting tilde escapes even when invoked
1312: in non-interactive mode. As mail(1) is called as root from cron,
1313: this can lead to a local root compromise.</a>
1.294 david 1314: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1315: Under certain conditions, on systems using YP with netgroups in
1316: the password database, it is possible for the rexecd(8) and rshd(8)
1317: daemons to execute a shell from a password database entry for a
1318: different user. Similarly, atrun(8) may change to the wrong
1319: home directory when running jobs.</a>
1.294 david 1320: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1321: A potential double free() exists in the zlib library;
1322: this is not exploitable on OpenBSD.
1323: The kernel also contains a copy of zlib; it is not
1324: currently known if the kernel zlib is exploitable.</a>
1.294 david 1325: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1326: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1327: may allow a local user to gain super-user privileges.</a>
1.294 david 1328: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1329: A race condition between the ptrace(2) and execve(2) system calls
1330: allows an attacker to modify the memory contents of suid/sgid
1331: processes which could lead to compromise of the super-user account.</a>
1.294 david 1332: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1333: There is a security hole in sudo(8) that can be exploited
1334: when the Postfix sendmail replacement is installed that may
1335: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1336: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1337: An attacker can trick a machine running the lpd daemon into
1338: creating new files in the root directory from a machine with
1339: remote line printer access.</a>
1.294 david 1340: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1341: The vi.recover script can be abused in such a way as
1342: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1343: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1344: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1345: resulting in a crash.</a>
1.294 david 1346: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1347: A security hole that may allow an attacker to partially authenticate
1348: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1349: </ul>
1350:
1351: <p>
1352: <li>
1.288 matthieu 1353: <a name="29"></a>
1.173 deraadt 1354:
1.294 david 1355: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1356: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1357: in <a href="anoncvs.html">OpenBSD current</a>. The
1358: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1359: you should update your machine.
1360:
1.173 deraadt 1361:
1362: <p>
1363: <ul>
1.294 david 1364: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1365: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1366: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1367: A race condition exists that could defeat the kernel's
1368: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1369: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1370: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1371: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1372: A local user can gain super-user privileges due to a buffer
1373: overflow in sshd(8) if AFS has been configured on the system
1374: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1375: in the sshd_config file.</a>
1.294 david 1376: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1377: The mail(1) was interpreting tilde escapes even when invoked
1378: in non-interactive mode. As mail(1) is called as root from cron,
1379: this can lead to a local root compromise.</a>
1.294 david 1380: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1381: A potential double free() exists in the zlib library;
1382: this is not exploitable on OpenBSD.
1383: The kernel also contains a copy of zlib; it is not
1384: currently known if the kernel zlib is exploitable.</a>
1.294 david 1385: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1386: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1387: may allow a local user to gain super-user privileges.</a>
1.294 david 1388: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1389: A race condition between the ptrace(2) and execve(2) system calls
1390: allows an attacker to modify the memory contents of suid/sgid
1391: processes which could lead to compromise of the super-user account.</a>
1.294 david 1392: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1393: There is a security hole in sudo(8) that can be exploited
1394: when the Postfix sendmail replacement is installed that may
1395: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1396: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1397: An attacker can trick a machine running the lpd daemon into
1398: creating new files in the root directory from a machine with
1399: remote line printer access.</a>
1.294 david 1400: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1401: The vi.recover script can be abused in such a way as
1402: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1403: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1404: A security hole exists in uuxqt(8) that may allow an
1405: attacker to gain root privileges.</a>
1.294 david 1406: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1407: A security hole exists in lpd(8) that may allow an
1408: attacker to gain root privileges if lpd is running.</a>
1.294 david 1409: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1410: A security hole exists in sendmail(8) that may allow an
1411: attacker on the local host to gain root privileges.</a>
1.294 david 1412: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1413: A kernel buffer overflow in the NFS code can be used to execute
1414: arbitrary code by users with mount privileges (only root by
1.181 millert 1415: default).</a>
1.294 david 1416: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1417: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1418: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1419: sshd(8) allows users to delete arbitrary files named "cookies"
1420: if X11 forwarding is enabled. X11 forwarding is disabled
1421: by default.</a>
1.294 david 1422: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1423: Programs using the fts routines can be tricked into changing
1424: into the wrong directory.</a>
1.294 david 1425: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1426: Sendmail signal handlers contain unsafe code,
1427: leading to numerous race conditions.</a>
1.173 deraadt 1428: </ul>
1429:
1430: <p>
1431: <li>
1.288 matthieu 1432: <a name="28"></a>
1.152 deraadt 1433:
1.294 david 1434: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1435: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1436: in <a href="anoncvs.html">OpenBSD current</a>. The
1437: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1438: you should update your machine.
1439:
1.152 deraadt 1440:
1441: <p>
1442: <ul>
1.294 david 1443: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1444: A security hole exists in uuxqt(8) that may allow an
1445: attacker to gain root privileges.</a>
1.294 david 1446: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1447: A security hole exists in lpd(8) that may allow an
1448: attacker to gain root privileges if lpd is running.</a>
1.294 david 1449: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1450: A security hole exists in sendmail(8) that may allow an
1451: attacker on the local host to gain root privileges.</a>
1.294 david 1452: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1453: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1454: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1455: Programs using the fts routines can be tricked into changing
1456: into the wrong directory.</a>
1.294 david 1457: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1458: Sendmail signal handlers contain unsafe code,
1459: leading to numerous race conditions.</a>
1.294 david 1460: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1461: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1462: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1463: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1464: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1465: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1466: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1467: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1468: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1469: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1470: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1471: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1472: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1473: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1474: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1475: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1476: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1477: rnd(4) did not use all of its input when written to.</a>
1.294 david 1478: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1479: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1480: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1481: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1482: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1483: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1484: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1485: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1486: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1487: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1488: </ul>
1489:
1490: <p>
1491: <li>
1.288 matthieu 1492: <a name="27"></a>
1.124 deraadt 1493:
1.294 david 1494: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1495: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1496: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1497: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1498:
1499: <p>
1500: <ul>
1.294 david 1501: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1502: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1503: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1504: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1505: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1506: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1507: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1508: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1509: (patch included)</a>
1.294 david 1510: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1511: X11 libraries have 2 potential overflows in xtrans code.
1512: (patch included)</a>
1.294 david 1513: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1514: Apache mod_rewrite and mod_vhost_alias modules could expose files
1515: on the server in certain configurations if used.
1516: (patch included)</a>
1.294 david 1517: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1518: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1519: TERMPATH and TERMCAP environment variables as it should.
1520: (patch included)</a>
1.294 david 1521: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1522: There are printf-style format string bugs in several privileged
1523: programs. (patch included)</a>
1.294 david 1524: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1525: libcurses honored terminal descriptions in the $HOME/.terminfo
1526: directory as well as in the TERMCAP environment variable for
1527: setuid and setgid applications.
1.146 deraadt 1528: (patch included)</a>
1.294 david 1529: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1530: A format string vulnerability exists in talkd(8).
1531: (patch included)</a>
1.294 david 1532: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1533: A format string vulnerability exists in the pw_error() function of the
1534: libutil library, yielding localhost root through chpass(1).
1535: (patch included)</a>
1.294 david 1536: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1537: Bad ESP/AH packets could cause a crash under certain conditions.
1538: (patch included)</a>
1.294 david 1539: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1540: A format string vulnerability (localhost root) exists in xlock(1).
1541: (patch included)</a>
1.294 david 1542: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1543: Various bugs found in X11 libraries have various side effects, almost
1544: completely denial of service in OpenBSD.
1545: (patch included)</a>
1.294 david 1546: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1547: Just like pretty much all the other unix ftp daemons
1548: on the planet, ftpd had a remote root hole in it.
1549: Luckily, ftpd was not enabled by default.
1.137 deraadt 1550: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1551: (patch included)</a>
1.294 david 1552: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1553: Mopd, very rarely used, contained some buffer overflows.
1554: (patch included)</a>
1.294 david 1555: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1556: libedit would check for a <b>.editrc</b> file in the current
1557: directory. Not known to be a real security issue, but a patch
1558: is available anyways.
1559: (patch included)</a>
1.294 david 1560: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1561: A serious bug in dhclient(8) could allow strings from a
1562: malicious dhcp server to be executed in the shell as root.
1563: (patch included)</a>
1.294 david 1564: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1565: A serious bug in isakmpd(8) policy handling wherein
1566: policy verification could be completely bypassed in isakmpd.
1567: (patch included)</a>
1.294 david 1568: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1569: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1570: should not be used, and results in security problems on
1571: other operating systems.</a>
1.294 david 1572: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1573: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1574: (patch included)</a>
1.294 david 1575: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1576: Improper use of ipf <i>keep-state</i> rules can result
1577: in firewall rules being bypassed. (patch included)</a>
1578:
1.124 deraadt 1579: </ul>
1580:
1581: <p>
1582: <li>
1.288 matthieu 1583: <a name="26"></a>
1.119 deraadt 1584:
1.294 david 1585: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1586: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1587: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1588: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1589:
1590: <p>
1591: <ul>
1.294 david 1592: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1593: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1594: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1595: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1596: Improper use of ipf <i>keep-state</i> rules can result
1597: in firewall rules being bypassed. (patch included)</a>
1.294 david 1598: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1599: xlockmore has a bug which a localhost attacker can use to gain
1600: access to the encrypted root password hash (which is normally
1.245 miod 1601: encoded using blowfish</a> (see
1.294 david 1602: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1603: crypt(3)</a>)
1.245 miod 1604: (patch included).
1.294 david 1605: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1606: Systems running with procfs enabled and mounted are
1607: vulnerable to a very tricky exploit. procfs is not
1608: mounted by default.
1609: (patch included).</a>
1.294 david 1610: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1611: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1612: thus exposing the system to a race where the aliases file
1613: did not exist.
1.119 deraadt 1614: (patch included).</a>
1.294 david 1615: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1616: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1617: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1618: A buffer overflow in the RSAREF code included in the
1619: USA version of libssl, is possibly exploitable in
1620: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1621: (patch included).<br></a>
1622: <strong>Update:</strong> Turns out that this was not exploitable
1623: in any of the software included in OpenBSD 2.6.
1.294 david 1624: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1625: Any user could change interface media configurations, resulting in
1626: a localhost denial of service attack.
1.121 deraadt 1627: (patch included).</a>
1.119 deraadt 1628: </ul>
1629:
1630: <p>
1631: <li>
1.288 matthieu 1632: <a name="25"></a>
1.106 deraadt 1633:
1.294 david 1634: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1635: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1636: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1637: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1638:
1.96 deraadt 1639: <p>
1.104 deraadt 1640: <ul>
1.294 david 1641: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1642: In cron(8), make sure argv[] is NULL terminated in the
1643: fake popen() and run sendmail as the user, not as root.
1644: (patch included).</a>
1.294 david 1645: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1646: filesystems had an overrun in their handling of uio_offset
1647: in their readdir() routines. (These filesystems are not
1648: enabled by default). (patch included).</a>
1.294 david 1649: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1650: when we execve() a new process. (patch included).</a>
1.294 david 1651: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1652: been handled by IPsec may be transmitted as cleartext.
1653: PF_KEY SA expirations may leak kernel resources.
1654: (patch included).</a>
1.294 david 1655: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1656: motd re-writing and change the find(1) to use -execdir
1657: (patch included).</a>
1.294 david 1658: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1659: users to chflags(2) or fchflags(2) on character or block devices
1660: which they may currently be the owner of (patch included).</a>
1.294 david 1661: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1662: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1663: </ul>
1664:
1.106 deraadt 1665: <p>
1666: <li>
1.288 matthieu 1667: <a name="24"></a>
1.235 miod 1668:
1.294 david 1669: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1670: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1671: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1672: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1673:
1.96 deraadt 1674: <p>
1.75 deraadt 1675: <ul>
1.294 david 1676: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1677: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1678: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1679: another kernel crash case caused by the <strong>crashme</strong>
1680: program (patch included).</a>
1.294 david 1681: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1682: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1683: (patch included).</a>
1.294 david 1684: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1685: existed in ping(8). (patch included).</a>
1.294 david 1686: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1687: the ipq, which could permit an attacker to cause a crash.
1688: (patch included).</a>
1.294 david 1689: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1690: kernel between accept(2) and select(2) could permit an attacker
1691: to hang sockets from remote.
1692: (patch included).</a>
1.294 david 1693: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1694: bog the machine excessively and cause problems.
1695: (patch included).</a>
1.294 david 1696: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1697: DDB interacted to possibly cause a crash.
1698: (patch included).</a>
1.294 david 1699: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1700: (patch included).</a>
1.294 david 1701: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1702: problem in bootpd(8). (patch included).</a>
1.294 david 1703: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1704: exploitable problem relating to environment variables in termcap
1705: and curses. (patch included).</a>
1.294 david 1706: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1707: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1708: </ul>
1709:
1.106 deraadt 1710: <p>
1711: <li>
1.288 matthieu 1712: <a name="23"></a>
1.235 miod 1713:
1.294 david 1714: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1715: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1716: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1717: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1718:
1.96 deraadt 1719: <p>
1.53 matthieu 1720: <ul>
1.294 david 1721: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1722: problem in bootpd(8). (patch included).</a>
1.294 david 1723: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1724: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1725: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1726: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1727: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1728: chpass(1) has a file descriptor leak which allows an
1729: attacker to modify /etc/master.passwd.</a>
1.294 david 1730: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1731: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1732: should not be executed with fd slots 0, 1, or 2 free.
1733: (patch included).</a>
1.294 david 1734: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1735: libraries (patches included).</a>
1.294 david 1736: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1737: processes too permissive (4th revision patch included).</a>
1.294 david 1738: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1739: of immutable and append-only file flags. (patch included).</a>
1.294 david 1740: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1741: if IPSEC is enabled (patch included).</a>
1.294 david 1742: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1743: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1744: </ul>
1.9 deraadt 1745:
1.106 deraadt 1746: <p>
1747: <li>
1.288 matthieu 1748: <a name="22"></a>
1.235 miod 1749:
1.294 david 1750: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1751: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1752: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1753: still exist in other operating systems. (The supplied patches are for
1754: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1755:
1.96 deraadt 1756: <p>
1.9 deraadt 1757: <ul>
1.294 david 1758: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1759: packets if IPSEC is enabled (patch included).</a>
1.294 david 1760: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1761: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1762: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1763: (patch included).</a>
1.294 david 1764: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1765: (patch included).</a>
1.294 david 1766: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1767: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1768: (patch included).</a>
1.294 david 1769: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1770: export (patch included).</a>
1.112 philen 1771: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1772: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1773: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1774: Acceptance.</a>
1.294 david 1775: A patch is available <a href="errata22.html#sourceroute">here</a>.
1776: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1777: flaw (patch included).</a>
1.294 david 1778: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1779: </ul>
1780:
1.106 deraadt 1781: <p>
1782: <li>
1.288 matthieu 1783: <a name="21"></a>
1.235 miod 1784:
1.294 david 1785: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1786: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1787: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1788: exist in other operating systems. (If you are running OpenBSD 2.1, we
1789: would strongly recommend an upgrade to the newest release, as this
1790: patch list only attempts at fixing the most important security
1791: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1792: security problems. Many of those problems were solved in ways which
1793: make it hard for us to provide patches).
1794:
1.96 deraadt 1795: <p>
1.52 deraadt 1796: <ul>
1.112 philen 1797: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1798: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1799: (patch included)</a>
1.112 philen 1800: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1801: </ul>
1.51 deraadt 1802:
1.106 deraadt 1803: <p>
1804: <li>
1.288 matthieu 1805: <a name="20"></a>
1.235 miod 1806:
1.294 david 1807: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1808: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1809: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1810: exist in other operating systems. (If you are running OpenBSD 2.0, we
1811: commend you for being there back in the old days!, but you're really
1812: missing out if you don't install a new version!)
1813:
1814: <p>
1815: <ul>
1.112 philen 1816: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1817: resolver (patch included)</a>
1818: <li>Many others... if people can hunt them down, please let me know
1819: and we'll put them up here.
1820: </ul>
1.51 deraadt 1821: <p>
1.106 deraadt 1822:
1.288 matthieu 1823: <a name="watching"></a>
1.294 david 1824: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1825:
1.21 deraadt 1826: Since we take a proactive stance with security, we are continually
1827: finding and fixing new security problems. Not all of these problems
1.80 espie 1828: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1829: confirmed to be exploitable; many simple bugs we fix do turn out to
1830: have security consequences we could not predict. We do not have the
1831: time resources to make these changes available in the above format.<p>
1.21 deraadt 1832:
1833: Thus there are usually minor security fixes in the current source code
1834: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1835: guarantee that these problems are of minimal impact and unproven
1.44 ian 1836: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1837: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1838:
1.45 deraadt 1839: People who are really concerned with security can do a number of
1840: things:<p>
1.21 deraadt 1841:
1842: <ul>
1843: <li>If you understand security issues, watch our
1.294 david 1844: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1845: eye out for things which appear security related. Since
1.21 deraadt 1846: exploitability is not proven for many of the fixes we make,
1847: do not expect the relevant commit message to say "SECURITY FIX!".
1848: If a problem is proven and serious, a patch will be available
1849: here very shortly after.
1.161 horacio 1850: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1851: security-announce mailing list</a> which will notify you for every
1.186 ian 1852: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1853: and instruct you on how to patch the problem.
1.21 deraadt 1854: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1855: complete system build from time to time (read /usr/src/Makefile
1856: carefully). Users can make the assumption that the current
1857: source tree always has stronger security than the previous release.
1.45 deraadt 1858: However, building your own system from source code is not trivial;
1.397 deraadt 1859: it is nearly 850MB of source code, and problems do occur as we
1.45 deraadt 1860: transition between major releases.
1.115 ericj 1861: <li>Install a binary snapshot for your
1.80 espie 1862: architecture, which are made available fairly often. For
1.29 deraadt 1863: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1864: </ul>
1865:
1.9 deraadt 1866: <p>
1.288 matthieu 1867: <a name="reporting"></a>
1.294 david 1868: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1869:
1.5 deraadt 1870: <p> If you find a new security problem, you can mail it to
1.294 david 1871: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1872: <br>
1.5 deraadt 1873: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1874: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1875:
1.107 deraadt 1876: <p>
1.288 matthieu 1877: <a name="papers"></a>
1.294 david 1878: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1879:
1.389 lum 1880: Numerous
1.404 deraadt 1881: <a href="papers/index.html">papers</a> have been written by OpenBSD team members,
1.389 lum 1882: many dedicated to security.
1.294 david 1883: </ul>
1.1 deraadt 1884:
1.24 deraadt 1885: </body>
1886: </html>
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