Annotation of www/security.html, Revision 1.355
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1.210 jsyn 17: <a href="index.html"><img alt="[OpenBSD]" height="30" width="141" src="images/smalltitle.gif" border="0"></a>
1.106 deraadt 18: <p>
1.294 david 19: <h2><font color="#e00000">Security</font></h2>
20: <hr>
1.1 deraadt 21:
1.114 philen 22: <table width="100%">
23: <tr>
24: <td colspan="2">
25: <strong>Index</strong>
26: </td>
27: </tr>
28: <tr>
29: <td valign="top">
1.294 david 30: <a href="#goals">Security goals of the Project</a>.<br>
31: <a href="#disclosure">Full Disclosure policy</a>.<br>
32: <a href="#process">Source code auditing process</a>.<br>
33: <a href="#default">"Secure by Default"</a>.<br>
34: <a href="#crypto">Use of Cryptography</a>.<br>
35: <p>
36: <a href="#watching">Watching changes</a>.<br>
37: <a href="#reporting">Reporting security issues</a>.<br>
38: <a href="#papers">Further Reading</a><br>
1.106 deraadt 39: <p>
1.114 philen 40: </td>
41: <td valign="top">
1.225 deraadt 42: For security advisories for specific releases, click below:<br>
43: <a href="#20">2.0</a>,
44: <a href="#21">2.1</a>,
45: <a href="#22">2.2</a>,
46: <a href="#23">2.3</a>,
47: <a href="#24">2.4</a>,
48: <a href="#25">2.5</a>,
49: <a href="#26">2.6</a>,
50: <a href="#27">2.7</a>,
51: <a href="#28">2.8</a>,
52: <a href="#29">2.9</a>,
53: <a href="#30">3.0</a>,
54: <a href="#31">3.1</a>,
1.246 deraadt 55: <a href="#32">3.2</a>,
1.261 david 56: <a href="#33">3.3</a>,
1.280 david 57: <a href="#34">3.4</a>,
1.301 miod 58: <a href="#35">3.5</a>,
1.312 david 59: <a href="#36">3.6</a>,
1.318 deraadt 60: <a href="#37">3.7</a>,
1.321 brad 61: <a href="#38">3.8</a>,
1.334 brad 62: <a href="#39">3.9</a>,
1.348 merdely 63: <a href="#40">4.0</a>,
64: <a href="#41">4.1</a>,
65: <a href="#42">4.2</a>.
1.114 philen 66: </td>
67: </tr>
68: </table>
1.56 deraadt 69: <hr>
70:
1.294 david 71: <a name="goals"></a>
1.278 deraadt 72: <ul>
1.294 david 73: <li><h3><font color="#e00000">Goal</font></h3><p>
1.22 deraadt 74:
1.14 deraadt 75: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 76: ONE in the industry for security (if we are not already there). Our
77: open software development model permits us to take a more
78: uncompromising view towards increased security than Sun, SGI, IBM, HP,
79: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 80: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 81: cryptography</a>, we are able to take cryptographic approaches towards
82: fixing security problems.<p>
1.18 deraadt 83:
1.288 matthieu 84: <a name="disclosure"></a>
1.294 david 85: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 86:
1.45 deraadt 87: Like many readers of the
1.196 jufi 88: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 89: BUGTRAQ mailing list</a>,
1.106 deraadt 90: we believe in full disclosure of security problems. In the
91: operating system arena, we were probably the first to embrace
92: the concept. Many vendors, even of free software, still try
93: to hide issues from their users.<p>
94:
95: Security information moves very fast in cracker circles. On the other
96: hand, our experience is that coding and releasing of proper security
97: fixes typically requires about an hour of work -- very fast fix
98: turnaround is possible. Thus we think that full disclosure helps the
99: people who really care about security.<p>
100:
1.288 matthieu 101: <a name="process"></a>
1.294 david 102: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 103:
1.12 deraadt 104: Our security auditing team typically has between six and twelve
1.45 deraadt 105: members who continue to search for and fix new security holes. We
106: have been auditing since the summer of 1996. The process we follow to
107: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 108: every critical software component. We are not so much looking for
109: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 110: years later someone discovers the problem used to be a security
1.106 deraadt 111: issue, and we fixed it because it was just a bug, well, all the
112: better. Flaws have been found in just about every area of the system.
113: Entire new classes of security problems have been found during our
114: audit, and often source code which had been audited earlier needs
115: re-auditing with these new flaws in mind. Code often gets audited
116: multiple times, and by multiple people with different auditing
117: skills.<p>
1.12 deraadt 118:
1.94 deraadt 119: Some members of our security auditing team worked for Secure Networks,
120: the company that made the industry's premier network security scanning
121: software package Ballista (Secure Networks got purchased by Network
122: Associates, Ballista got renamed to Cybercop Scanner, and well...)
123: That company did a lot of security research, and thus fit in well
1.106 deraadt 124: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
125: colours since day 1.<p>
1.31 deraadt 126:
1.34 deraadt 127: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 128: In most cases we have found that the determination of exploitability
129: is not an issue. During our ongoing auditing process we find many
130: bugs, and endeavor to fix them even though exploitability is not
131: proven. We fix the bug, and we move on to find other bugs to fix. We
132: have fixed many simple and obvious careless programming errors in code
133: and only months later discovered that the problems were in fact
134: exploitable. (Or, more likely someone on
1.197 jufi 135: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 136: would report that other operating systems were vulnerable to a `newly
137: discovered problem', and then it would be discovered that OpenBSD had
138: been fixed in a previous release). In other cases we have been saved
139: from full exploitability of complex step-by-step attacks because we
140: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 141: managed such a success is the lpd advisory that Secure Networks put out.
142: <p>
1.29 deraadt 143:
1.288 matthieu 144: <a name="newtech"></a>
1.294 david 145: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 146:
147: As we audit source code, we often invent new ways of solving problems.
148: Sometimes these ideas have been used before in some random application
149: written somewhere, but perhaps not taken to the degree that we do.
150: <p>
151:
152: <ul>
153: <li>strlcpy() and strlcat()
154: <li>Memory protection purify
155: <ul>
156: <li>W^X
157: <li>.rodata segment
158: <li>Guard pages
159: <li>Randomized malloc()
160: <li>Randomized mmap()
161: <li>atexit() and stdio protection
162: </ul>
1.295 otto 163: <li>Privilege separation
1.278 deraadt 164: <li>Privilege revocation
165: <li>Chroot jailing
166: <li>New uids
167: <li>ProPolice
168: <li>... and others
169: </ul>
170: <p>
171:
1.294 david 172: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 173:
1.45 deraadt 174: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 175: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 176: commonplace in security forums like
1.197 jufi 177: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 178:
1.45 deraadt 179: The most intense part of our security auditing happened immediately
1.80 espie 180: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 181: over the last third of 1996 and first half of 1997. Thousands (yes,
182: thousands) of security issues were fixed rapidly over this year-long
183: period; bugs like the standard buffer overflows, protocol
184: implementation weaknesses, information gathering, and filesystem
185: races. Hence most of the security problems that we encountered were
186: fixed before our 2.1 release, and then a far smaller number needed
187: fixing for our 2.2 release. We do not find as many problems anymore,
188: it is simply a case of diminishing returns. Recently the security
189: problems we find and fix tend to be significantly more obscure or
190: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 191:
1.35 deraadt 192: <ul>
1.45 deraadt 193: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 194: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 195: to search for more complicated exploits, so we will too.
196: <li>Finding and fixing subtle flaws in complicated software is
197: a lot of fun.
1.35 deraadt 198: </ul>
1.106 deraadt 199: <p>
1.15 deraadt 200:
1.14 deraadt 201: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 202: to find and fix new security flaws.<p>
1.12 deraadt 203:
1.288 matthieu 204: <a name="default"></a>
1.294 david 205: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 206:
207: To ensure that novice users of OpenBSD do not need to become security
208: experts overnight (a viewpoint which other vendors seem to have), we
209: ship the operating system in a Secure by Default mode. All non-essential
210: services are disabled. As the user/administrator becomes more familiar
211: with the system, he will discover that he has to enable daemons and other
212: parts of the system. During the process of learning how to enable a new
213: service, the novice is more likely to learn of security considerations.<p>
214:
215: This is in stark contrast to the increasing number of systems that
216: ship with NFS, mountd, web servers, and various other services enabled
217: by default, creating instantaneous security problems for their users
218: within minutes after their first install.<p>
219:
1.288 matthieu 220: <a name="crypto"></a>
1.294 david 221: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 222:
223: And of course, since the OpenBSD project is based in Canada, it is possible
224: for us to integrate cryptography. For more information, read the page
1.116 deraadt 225: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 226:
1.294 david 227: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 228:
229: <li>
1.348 merdely 230: <a name="42"></a>
231:
232: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
233: These are the OpenBSD 4.2 advisories -- all these problems are solved
234: in <a href=anoncvs.html>OpenBSD current</a> and the
235: <a href=stable.html>patch branch</a>.
236:
237: <p>
238: <ul>
1.354 brad 239: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
240: Multiple vulnerabilities in X.Org.</a>
1.352 henning 241: <li><a href="errata42.html#005_ifrtlabel">Jan 11, 2008:
242: A missing NULL pointer check can lead to a kernel panic.</a>
243: <li><a href="errata42.html#004_pf">Nov 27, 2007:
244: A memory leak in pf can lead to machine lockups.</a>
1.351 okan 245: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
246: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 247: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 248: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 249: </ul>
250:
251: <li>
1.346 matthieu 252: <a name="41"></a>
253:
254: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
255: These are the OpenBSD 4.1 advisories -- all these problems are solved
256: in <a href=anoncvs.html>OpenBSD current</a> and the
257: <a href=stable.html>patch branch</a>.
258:
259: <p>
260: <ul>
1.354 brad 261: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
262: Multiple vulnerabilities in X.Org.</a>
263: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
264: The SSL_get_shared_ciphers() function in OpenSSL contains
265: an off-by-one overflow.</a>
1.350 deraadt 266: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 267: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 268: <li><a href="errata41.html#009_file">Jul 9, 2007:
269: Fix possible heap overflow in file(1).</a>
1.346 matthieu 270: <li><a href="errata41.html#005_route6">Apr 27, 2007:
271: IPv6 type 0 route headers can be used to mount a DoS attack
272: against hosts and networks.</a>
273: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
274: Multiple vulnerabilities in X.Org.</a>
275: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
276: Incorrect mbuf handling for ICMP6 packets.</a>
277: </ul>
278:
1.355 ! miod 279: <p>
! 280: OpenBSD 4.0 and earlier releases are not supported anymore. The following
! 281: paragraphs only list advisories issued while they were maintained; these
! 282: releases are likely to be affected by the advisories for more recent releases.
! 283: <br>
! 284:
1.346 matthieu 285: <li>
1.334 brad 286: <a name="40"></a>
287: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
288: These are the OpenBSD 4.0 advisories -- all these problems are solved
289: in <a href=anoncvs.html>OpenBSD current</a> and the
290: <a href=stable.html>patch branch</a>.
291:
292: <p>
293: <ul>
1.350 deraadt 294: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 295: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 296: <li><a href="errata40.html#015_file">Jul 9, 2007:
297: Fix possible heap overflow in file(1).</a>
1.343 deraadt 298: <li><a href="errata40.html#012_route6">Apr 23, 2007:
299: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 300: against hosts and networks.</a>
1.342 mbalmer 301: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
302: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 303: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
304: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 305: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 306: Insufficient validation in vga(4) may allow an attacker to gain
307: root privileges on some i386 systems.</a>
1.339 deraadt 308: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 309: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 310: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 311: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
312: found by Chris Evans.</a>
1.339 deraadt 313: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 314: Several problems have been found in OpenSSL.</a>
1.339 deraadt 315: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 316: httpd(8) does not sanitize the Expect header from an HTTP request
317: when it is reflected back in an error message, which might allow
318: cross-site scripting (XSS) style attacks.</a>
319: </ul>
320:
321: <li>
1.321 brad 322: <a name="39"></a>
323:
324: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
325: These are the OpenBSD 3.9 advisories -- all these problems are solved
326: in <a href=anoncvs.html>OpenBSD current</a> and the
327: <a href=stable.html>patch branch</a>.
328:
329: <p>
330: <ul>
1.343 deraadt 331: <li><a href="errata39.html#022_route6">Apr 23, 2007:
332: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 333: against hosts and networks.</a>
1.342 mbalmer 334: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
335: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 336: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
337: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 338: <li><a href="errata39.html#agp">Jan 3, 2007:
339: Insufficient validation in vga(4) may allow an attacker to gain
340: root privileges on some i386 systems.</a>
1.336 brad 341: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 342: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 343: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 344: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 345: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 346: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 347: found by Chris Evans.</a>
1.333 deraadt 348: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 349: Several problems have been found in OpenSSL.</a>
1.333 deraadt 350: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 351: httpd(8) does not sanitize the Expect header from an HTTP request
352: when it is reflected back in an error message, which might allow
353: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 354: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 355: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
356: possible for an attacker to construct an invalid signature which
357: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 358: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 359: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 360: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 361: Due to the failure to correctly validate LCP configuration option
362: lengths, it is possible for an attacker to send LCP packets via an
363: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 364: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 365: A problem in isakmpd(8) caused IPsec to run partly without replay
366: protection.</a>
1.333 deraadt 367: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 368: It is possible to cause the kernel to panic when more than the default
369: number of sempahores have been allocated.</a>
1.333 deraadt 370: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 371: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
372: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
373: option.</a>
1.333 deraadt 374: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 375: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 376: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 377: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
378: overflow.</a>
1.333 deraadt 379: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 380: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 381: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 382: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 383: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 384: A race condition has been reported to exist in the handling by sendmail
385: of asynchronous signals.</a>
386: </ul>
387:
388: <li>
1.318 deraadt 389: <a name="38"></a>
390:
391: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
392: These are the OpenBSD 3.8 advisories -- all these problems are solved
393: in <a href=anoncvs.html>OpenBSD current</a> and the
394: <a href=stable.html>patch branch</a>.
395:
396: <p>
397: <ul>
1.332 brad 398: <li><a href="errata38.html#ssh2">Oct 12, 2006:
399: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 400: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 401: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 402: found by Chris Evans.</a>
403: <li><a href="errata38.html#openssl2">Oct 7, 2006:
404: Several problems have been found in OpenSSL.</a>
405: <li><a href="errata38.html#httpd2">Oct 7, 2006:
406: httpd(8) does not sanitize the Expect header from an HTTP request
407: when it is reflected back in an error message, which might allow
408: cross-site scripting (XSS) style attacks.</a>
1.329 brad 409: <li><a href="errata38.html#openssl">Sep 8, 2006:
410: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
411: possible for an attacker to construct an invalid signature which
412: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 413: <li><a href="errata38.html#bind">Sep 8, 2006:
414: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 415: <li><a href="errata38.html#sppp">Sep 2, 2006:
416: Due to the failure to correctly validate LCP configuration option
417: lengths, it is possible for an attacker to send LCP packets via an
418: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 419: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
420: A problem in isakmpd(8) caused IPsec to run partly without replay
421: protection.</a>
422: <li><a href="errata38.html#sem">Aug 25, 2006:
423: It is possible to cause the kernel to panic when more than the default
424: number of sempahores have been allocated.</a>
425: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
426: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
427: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
428: option.</a>
429: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
430: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 431: <li><a href="errata38.html#httpd">Jul 30, 2006:
432: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
433: overflow.</a>
1.324 brad 434: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
435: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 436: <li><a href="errata38.html#xorg">May 2, 2006:
437: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 438: <li><a href="errata38.html#sendmail">Mar 25, 2006:
439: A race condition has been reported to exist in the handling by sendmail
440: of asynchronous signals.</a>
441: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 442: Josh Bressers has reported a weakness in OpenSSH caused due to the
443: insecure use of the system(3) function in scp(1) when performing copy
444: operations using filenames that are supplied by the user from the
445: command line.</a>
1.321 brad 446: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 447: Do not allow users to trick suid programs into re-opening files via
448: /dev/fd.</a>
1.321 brad 449: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 450: A buffer overflow has been found in the Perl interpreter with the
451: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 452: </ul>
453:
454: <li>
1.312 david 455: <a name="37"></a>
456:
457: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
458: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 459: in <a href="anoncvs.html">OpenBSD current</a>. The
460: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
461: you should update your machine.
1.312 david 462:
463: <p>
464: <ul>
1.322 brad 465: <li><a href="errata37.html#xorg">May 2, 2006:
466: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 467: <li><a href="errata37.html#sendmail">Mar 25, 2006:
468: A race condition has been reported to exist in the handling by sendmail
469: of asynchronous signals.</a>
1.320 brad 470: <li><a href="errata37.html#ssh">Feb 12, 2006:
471: Josh Bressers has reported a weakness in OpenSSH caused due to the
472: insecure use of the system(3) function in scp(1) when performing copy
473: operations using filenames that are supplied by the user from the
474: command line.</a>
1.319 brad 475: <li><a href="errata37.html#fd">Jan 5, 2006:
476: Do not allow users to trick suid programs into re-opening files via
477: /dev/fd.</a>
478: <li><a href="errata37.html#perl">Jan 5, 2006:
479: A buffer overflow has been found in the Perl interpreter with the
480: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 481: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 482: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 483: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 484: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 485: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 486: Fix a race condition in sudo(8) that could allow a user
1.315 millert 487: to run arbitrary commands.</a>
1.318 deraadt 488: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 489: Fix a buffer overflow, memory leaks, and NULL pointer
490: dereference in cvs(1).</a>
1.312 david 491: </ul>
492:
493: <li>
1.301 miod 494: <a name="36"></a>
495:
496: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
497: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 498: in <a href="anoncvs.html">OpenBSD current</a>. The
499: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
500: you should update your machine.
1.301 miod 501:
502: <p>
1.302 markus 503: <ul>
1.317 millert 504: <li><a href="errata36.html#libz2">Jul 21, 2005:
505: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 506: <li><a href="errata36.html#libz">Jul 6, 2005:
507: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 508: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 509: Fix a race condition in sudo(8) that could allow a user
1.315 millert 510: to run arbitrary commands.</a>
1.311 deraadt 511: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 512: Fix a buffer overflow, memory leaks, and NULL pointer
513: dereference in cvs(1).</a>
1.311 deraadt 514: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 515: Due to buffer overflows in telnet(1), a malicious
516: server or man-in-the-middle attack could allow
517: execution of arbitrary code with the privileges of
518: the user invoking telnet(1).</a>
1.311 deraadt 519: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 520: More stringent checking should be done in the copy(9)
521: functions to prevent their misuse.</a>
1.311 deraadt 522: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 523: More stringent checking should be done in the copy(9)
524: functions to prevent their misuse.</a>
1.311 deraadt 525: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 526: httpd(8)'s mod_include module fails to properly validate
527: the length of user supplied tag strings prior to copying
1.305 brad 528: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 529: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 530: On systems running isakmpd(8) it is possible for a local
531: user to cause kernel memory corruption and system panic by
1.303 markus 532: setting ipsec(4) credentials on a socket.</a>
1.302 markus 533: </ul>
1.301 miod 534:
535: <li>
1.288 matthieu 536: <a name="35"></a>
1.279 deraadt 537:
1.294 david 538: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 539: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 540: in <a href="anoncvs.html">OpenBSD current</a>. The
541: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
542: you should update your machine.
1.279 deraadt 543:
544: <p>
545: <ul>
1.310 brad 546: <li><a href="errata35.html#cvs4">Apr 28, 2005:
547: Fix a buffer overflow, memory leaks, and NULL pointer
548: dereference in cvs(1).</a>
1.309 brad 549: <li><a href="errata35.html#telnet">Mar 30, 2005:
550: Due to buffer overflows in telnet(1), a malicious
551: server or man-in-the-middle attack could allow
552: execution of arbitrary code with the privileges of
553: the user invoking telnet(1).</a>
1.308 brad 554: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 555: More stringent checking should be done in the copy(9)
556: functions to prevent their misuse.</a>
1.306 brad 557: <li><a href="errata35.html#locore">Feb 28, 2005:
558: More stringent checking should be done in the copy(9)
559: functions to prevent their misuse.</a>
1.304 brad 560: <li><a href="errata35.html#httpd3">Jan 12, 2005:
561: httpd(8)'s mod_include module fails to properly validate
562: the length of user supplied tag strings prior to copying
1.305 brad 563: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 564: <li><a href="errata35.html#pfkey">Dec 14, 2004:
565: On systems running isakmpd(8) it is possible for a local
566: user to cause kernel memory corruption and system panic by
1.303 markus 567: setting ipsec(4) credentials on a socket.</a>
1.301 miod 568: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 569: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 570: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 571: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 572: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 573: httpd(8)'s mod_rewrite module can be made to write one zero byte in
574: an arbitrary memory position outside of a char array, causing a DoS
575: or possibly buffer overflows.</a>
1.301 miod 576: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 577: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 578: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 579: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 580: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 581: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 582: Multiple remote vulnerabilities have been found in the cvs(1)
583: server which can be used by CVS clients to crash or execute
1.293 brad 584: arbitrary code on the server.</a>
1.301 miod 585: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 586: kdc(8) performs inadequate checking of request fields, leading
587: to the possibility of principal impersonation from other
588: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 589: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 590: xdm(1) ignores the requestPort resource and creates a
1.293 brad 591: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 592: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 593: A buffer overflow in the cvs(1) server has been found,
594: which can be used by CVS clients to execute arbitrary code on
1.293 brad 595: the server.</a>
1.301 miod 596: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 597: Integer overflow problems were found in procfs, allowing
1.293 brad 598: reading of arbitrary kernel memory.</a>
1.301 miod 599: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 600: Pathname validation problems have been found in cvs(1),
601: allowing clients and servers access to files outside the
1.293 brad 602: repository or local CVS tree.</a>
1.279 deraadt 603: </ul>
604:
605: <p>
606: <li>
1.288 matthieu 607: <a name="34"></a>
1.261 david 608:
1.294 david 609: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 610: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 611: in <a href="anoncvs.html">OpenBSD current</a>. The
612: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
613: you should update your machine.
1.261 david 614: <p>
615: <ul>
1.302 markus 616: <li><a href="errata34.html#pfkey">Dec 14, 2004:
617: On systems running isakmpd(8) it is possible for a local
618: user to cause kernel memory corruption and system panic by
1.303 markus 619: setting ipsec(4) credentials on a socket.</a>
1.298 brad 620: <li><a href="errata34.html#xpm">Sep 16, 2004:
621: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 622: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
623: httpd(8)'s mod_rewrite module can be made to write one zero byte in
624: an arbitrary memory position outside of a char array, causing a DoS
625: or possibly buffer overflows.</a>
1.294 david 626: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 627: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 628: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 629: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 630: an attacker can delete IPsec tunnels at will.</a>
1.294 david 631: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 632: Multiple remote vulnerabilities have been found in the cvs(1)
633: server which can be used by CVS clients to crash or execute
1.293 brad 634: arbitrary code on the server.</a>
1.294 david 635: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 636: kdc(8) performs inadequate checking of request fields, leading
637: to the possibility of principal impersonation from other
638: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 639: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 640: A buffer overflow in the cvs(1) server has been found,
641: which can be used by CVS clients to execute arbitrary code on
642: the server.</a>
1.294 david 643: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 644: Integer overflow problems were found in procfs, allowing
645: reading of arbitrary kernel memory.</a>
1.294 david 646: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 647: Pathname validation problems have been found in cvs(1),
648: allowing clients and servers access to files outside the
649: repository or local CVS tree.</a>
1.294 david 650: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 651: A missing check for a NULL-pointer dereference may allow a
1.281 otto 652: remote attacker to crash applications using OpenSSL.</a>
1.294 david 653: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 654: Defects in the payload validation and processing functions of
655: isakmpd have been discovered. An attacker could send malformed
656: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 657: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 658: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
659: access module, using IP addresses without a netmask on big endian
660: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 661: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 662: An IPv6 MTU handling problem exists that could be used by an
663: attacker to cause a denial of service attack.</a>
1.294 david 664: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 665: A reference counting bug in shmat(2) could be used to write to
666: kernel memory under certain circumstances.</a>
1.294 david 667: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 668: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 669: by Thomas Walpuski.</a>
1.294 david 670: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 671: It may be possible for a local user to overrun the stack in
672: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 673: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 674: The use of certain ASN.1 encodings or malformed public keys may
675: allow an attacker to mount a denial of service attack against
676: applications linked with ssl(3).</a>
1.261 david 677: </ul>
678:
679: <li>
1.288 matthieu 680: <a name="33"></a>
1.246 deraadt 681:
1.294 david 682: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 683: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 684: in <a href="anoncvs.html">OpenBSD current</a>. The
685: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 686: you should update your machine.
1.246 deraadt 687: <p>
688: <ul>
1.294 david 689: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 690: Pathname validation problems have been found in cvs(1),
691: allowing clients and servers access to files outside the
692: repository or local CVS tree.</a>
1.294 david 693: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 694: A missing check for a NULL-pointer dereference may allow a
1.281 otto 695: remote attacker to crash applications using OpenSSL.</a>
1.294 david 696: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 697: Defects in the payload validation and processing functions of
698: isakmpd have been discovered. An attacker could send malformed
699: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 700: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 701: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
702: access module, using IP addresses without a netmask on big endian
703: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 704: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 705: An IPv6 MTU handling problem exists that could be used by an
706: attacker to cause a denial of service attack.</a>
1.294 david 707: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 708: A reference counting bug in shmat(2) could be used to write to
709: kernel memory under certain circumstances.</a>
1.294 david 710: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 711: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 712: by Thomas Walpuski.</a>
1.294 david 713: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 714: It may be possible for a local user to execute arbitrary code
715: resulting in escalation of privileges due to a stack overrun
716: in compat_ibcs2(8).</a>
1.294 david 717: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 718: The use of certain ASN.1 encodings or malformed public keys may
719: allow an attacker to mount a denial of service attack against
720: applications linked with ssl(3).</a>
1.294 david 721: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 722: Access of freed memory in pf(4) could be used to
1.260 margarid 723: remotely panic a machine using scrub rules.</a>
1.294 david 724: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 725: A buffer overflow in the address parsing in
726: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 727: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 728: OpenSSH versions prior to 3.7 contains a buffer management error
729: that is potentially exploitable.</a>
1.294 david 730: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 731: Root may be able to reduce the security level by taking advantage of
732: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 733: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 734: An improper bounds check in the kernel may allow a local user
735: to panic the kernel.</a>
1.294 david 736: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 737: An off-by-one error exists in the C library function realpath(3)
738: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 739: </ul>
740:
1.265 miod 741:
1.247 david 742: <p>
1.246 deraadt 743: <li>
1.288 matthieu 744: <a name="32"></a>
1.224 deraadt 745:
1.294 david 746: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 747: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 748: in <a href="anoncvs.html">OpenBSD current</a>. The
749: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 750: you should update your machine.
1.224 deraadt 751: <p>
752: <ul>
1.294 david 753: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 754: The use of certain ASN.1 encodings or malformed public keys may
755: allow an attacker to mount a denial of service attack against
756: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 757: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 758: Access of freed memory in pf(4) could be used to
1.260 margarid 759: remotely panic a machine using scrub rules.</a>
1.294 david 760: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 761: A buffer overflow in the address parsing in
762: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 763: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 764: OpenSSH versions prior to 3.7 contains a buffer management error
765: that is potentially exploitable.</a>
1.294 david 766: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 767: Fix for a potential security issue in
768: sendmail(8) with respect to DNS maps.</a>
1.294 david 769: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 770: An off-by-one error exists in the C library function realpath(3)
771: may allow an attacker to gain escalated privileges.</a>
1.294 david 772: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 773: A buffer overflow in the address parsing in
774: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 775: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 776: A cryptographic weaknesses in the Kerberos v4 protocol can be
777: exploited on Kerberos v5 as well.</a>
1.294 david 778: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 779: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 780: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 781: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 782: Various SSL and TLS operations in OpenSSL are vulnerable to
783: timing attacks.</a>
1.294 david 784: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 785: A buffer overflow in lprm(1) may allow an attacker to elevate
786: privileges to user daemon.</a>.
1.294 david 787: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 788: A buffer overflow in the envelope comments processing in
789: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 790: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 791: httpd(8) leaks file inode numbers via ETag header as well as
792: child PIDs in multipart MIME boundary generation. This could
793: lead, for example, to NFS exploitation because it uses inode
794: numbers as part of the file handle.</a>
1.294 david 795: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 796: In ssl(8) an information leak can occur via timing by performing
797: a MAC computation even if incorrect block cipher padding has
798: been found, this is a countermeasure. Also, check for negative
799: sizes, in allocation routines.</a>
1.294 david 800: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 801: A double free exists in cvs(1) that could lead to privilege
802: escalation for cvs configurations where the cvs command is
1.233 margarid 803: run as a privileged user.</a>
1.294 david 804: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 805: A buffer overflow exists in named(8) that could lead to a
806: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 807: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 808: A logic error in the pool kernel memory allocator could cause
809: memory corruption in low-memory situations, causing the system
810: to crash.</a>
1.294 david 811: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 812: An attacker can bypass smrsh(8)'s restrictions and execute
813: arbitrary commands with the privileges of his own account.</a>
1.294 david 814: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 815: Network bridges running pf with scrubbing enabled could cause
816: mbuf corruption, causing the system to crash.</a>
1.294 david 817: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 818: A buffer overflow can occur in the kadmind(8) daemon, leading
819: to possible remote crash or exploit.</a>
1.224 deraadt 820: </ul>
821:
1.227 miod 822: <p>
823: <li>
1.288 matthieu 824: <a name="31"></a>
1.203 deraadt 825:
1.294 david 826: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 827: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 828: in <a href="anoncvs.html">OpenBSD current</a>. The
829: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 830: you should update your machine.
1.203 deraadt 831:
832: <p>
833: <ul>
1.294 david 834: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 835: A buffer overflow in the address parsing in
836: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 837: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 838: A cryptographic weaknesses in the Kerberos v4 protocol can be
839: exploited on Kerberos v5 as well.</a>
1.294 david 840: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 841: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 842: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 843: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 844: Various SSL and TLS operations in OpenSSL are vulnerable to
845: timing attacks.</a>
1.294 david 846: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 847: A buffer overflow in lprm(1) may allow an attacker to gain
848: root privileges.</a>
1.294 david 849: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 850: A buffer overflow in the envelope comments processing in
851: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 852: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 853: In ssl(8) an information leak can occur via timing by performing
854: a MAC computation even if incorrect block cipher padding has
855: been found, this is a countermeasure. Also, check for negative
856: sizes, in allocation routines.</a>
1.294 david 857: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 858: A double free exists in cvs(1) that could lead to privilege
859: escalation for cvs configurations where the cvs command is
1.294 david 860: run as a privileged user</a>.
861: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 862: A buffer overflow exists in named(8) that could lead to a
863: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 864: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 865: Incorrect argument checking in the getitimer(2) system call
866: may allow an attacker to crash the system.</a>
1.294 david 867: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 868: An attacker can bypass smrsh(8)'s restrictions and execute
869: arbitrary commands with the privileges of his own account.</a>
1.294 david 870: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 871: A buffer overflow can occur in the kadmind(8) daemon, leading
872: to possible remote crash or exploit.</a>
1.294 david 873: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 874: Incorrect argument checking in the setitimer(2) system call
875: may allow an attacker to write to kernel memory.</a>
1.294 david 876: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 877: An insufficient boundary check in the select system call
1.220 miod 878: allows an attacker to overwrite kernel memory and execute arbitrary code
879: in kernel context.</a>
1.294 david 880: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 881: Several remote buffer overflows can occur in the SSL2 server and SSL3
882: client of the ssl(8) library, as in the ASN.1 parser code in the
883: crypto(3) library, all of them being potentially remotely
884: exploitable.</a>
1.294 david 885: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 886: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
887: possible remote crash.</a>
1.294 david 888: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 889: A race condition exists in the pppd(8) daemon which may cause it to
890: alter the file permissions of an arbitrary file.</a>
1.294 david 891: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 892: Receiving IKE payloads out of sequence can cause isakmpd(8) to
893: crash.</a>
1.294 david 894: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 895: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 896: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 897: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 898: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 899: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 900: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 901: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 902: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 903: input validation error that can result in an integer overflow and
904: privilege escalation.</a>
1.294 david 905: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 906: A buffer overflow can occur during the interpretation of chunked
907: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 908: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 909: Under certain conditions, on systems using YP with netgroups
910: in the password database, it is possible that sshd(8) does
911: ACL checks for the requested user name but uses the password
912: database entry of a different user for authentication. This
913: means that denied users might authenticate successfully
914: while permitted users could be locked out.</a>
1.294 david 915: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 916: A race condition exists that could defeat the kernel's
917: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 918: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 919: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 920: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 921: A local user can gain super-user privileges due to a buffer
922: overflow in sshd(8) if AFS has been configured on the system
923: or if KerberosTgtPassing or AFSTokenPassing has been enabled
924: in the sshd_config file.</a>
1.203 deraadt 925: </ul>
926:
1.235 miod 927: <p>
1.203 deraadt 928: <li>
1.288 matthieu 929: <a name="30"></a>
1.187 deraadt 930:
1.294 david 931: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 932: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 933: in <a href="anoncvs.html">OpenBSD current</a>. The
934: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 935: you should update your machine.
1.187 deraadt 936:
937: <p>
938: <ul>
1.294 david 939: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 940: A buffer overflow exists in named(8) that could lead to a
941: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 942: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 943: Incorrect argument checking in the getitimer(2) system call
944: may allow an attacker to crash the system.</a>
1.294 david 945: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 946: An attacker can bypass smrsh(8)'s restrictions and execute
947: arbitrary commands with the privileges of his own account.</a>
1.294 david 948: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 949: A buffer overflow can occur in the kadmind(8) daemon, leading
950: to possible remote crash or exploit.</a>
1.294 david 951: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 952: Incorrect argument checking in the setitimer(2) system call
953: may allow an attacker to write to kernel memory.</a>
1.294 david 954: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 955: An insufficient boundary check in the select and poll system calls
956: allows an attacker to overwrite kernel memory and execute arbitrary code
957: in kernel context.</a>
1.294 david 958: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 959: Several remote buffer overflows can occur in the SSL2 server and SSL3
960: client of the ssl(8) library, as in the ASN.1 parser code in the
961: crypto(3) library, all of them being potentially remotely
962: exploitable.</a>
1.294 david 963: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 964: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
965: possible remote crash.</a>
1.294 david 966: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 967: A race condition exists in the pppd(8) daemon which may cause it to
968: alter the file permissions of an arbitrary file.</a>
1.294 david 969: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 970: Receiving IKE payloads out of sequence can cause isakmpd(8) to
971: crash.</a>
1.294 david 972: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 973: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 974: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 975: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 976: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 977: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 978: input validation error that can result in an integer overflow and
979: privilege escalation.</a>
1.294 david 980: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 981: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 982: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 983: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 984: A buffer overflow can occur during the interpretation of chunked
985: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 986: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 987: A race condition exists that could defeat the kernel's
988: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 989: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 990: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 991: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 992: A local user can gain super-user privileges due to a buffer
993: overflow in sshd(8) if AFS has been configured on the system
994: or if KerberosTgtPassing or AFSTokenPassing has been enabled
995: in the sshd_config file.</a>
1.294 david 996: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 997: The mail(1) was interpreting tilde escapes even when invoked
998: in non-interactive mode. As mail(1) is called as root from cron,
999: this can lead to a local root compromise.</a>
1.294 david 1000: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1001: Under certain conditions, on systems using YP with netgroups in
1002: the password database, it is possible for the rexecd(8) and rshd(8)
1003: daemons to execute a shell from a password database entry for a
1004: different user. Similarly, atrun(8) may change to the wrong
1005: home directory when running jobs.</a>
1.294 david 1006: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1007: A potential double free() exists in the zlib library;
1008: this is not exploitable on OpenBSD.
1009: The kernel also contains a copy of zlib; it is not
1010: currently known if the kernel zlib is exploitable.</a>
1.294 david 1011: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1012: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1013: may allow a local user to gain super-user privileges.</a>
1.294 david 1014: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1015: A race condition between the ptrace(2) and execve(2) system calls
1016: allows an attacker to modify the memory contents of suid/sgid
1017: processes which could lead to compromise of the super-user account.</a>
1.294 david 1018: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1019: There is a security hole in sudo(8) that can be exploited
1020: when the Postfix sendmail replacement is installed that may
1021: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1022: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1023: An attacker can trick a machine running the lpd daemon into
1024: creating new files in the root directory from a machine with
1025: remote line printer access.</a>
1.294 david 1026: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1027: The vi.recover script can be abused in such a way as
1028: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1029: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1030: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1031: resulting in a crash.</a>
1.294 david 1032: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1033: A security hole that may allow an attacker to partially authenticate
1034: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1035: </ul>
1036:
1037: <p>
1038: <li>
1.288 matthieu 1039: <a name="29"></a>
1.173 deraadt 1040:
1.294 david 1041: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1042: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1043: in <a href="anoncvs.html">OpenBSD current</a>. The
1044: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1045: you should update your machine.
1046:
1.173 deraadt 1047:
1048: <p>
1049: <ul>
1.294 david 1050: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1051: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1052: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1053: A race condition exists that could defeat the kernel's
1054: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1055: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1056: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1057: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1058: A local user can gain super-user privileges due to a buffer
1059: overflow in sshd(8) if AFS has been configured on the system
1060: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1061: in the sshd_config file.</a>
1.294 david 1062: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1063: The mail(1) was interpreting tilde escapes even when invoked
1064: in non-interactive mode. As mail(1) is called as root from cron,
1065: this can lead to a local root compromise.</a>
1.294 david 1066: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1067: A potential double free() exists in the zlib library;
1068: this is not exploitable on OpenBSD.
1069: The kernel also contains a copy of zlib; it is not
1070: currently known if the kernel zlib is exploitable.</a>
1.294 david 1071: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1072: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1073: may allow a local user to gain super-user privileges.</a>
1.294 david 1074: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1075: A race condition between the ptrace(2) and execve(2) system calls
1076: allows an attacker to modify the memory contents of suid/sgid
1077: processes which could lead to compromise of the super-user account.</a>
1.294 david 1078: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1079: There is a security hole in sudo(8) that can be exploited
1080: when the Postfix sendmail replacement is installed that may
1081: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1082: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1083: An attacker can trick a machine running the lpd daemon into
1084: creating new files in the root directory from a machine with
1085: remote line printer access.</a>
1.294 david 1086: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1087: The vi.recover script can be abused in such a way as
1088: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1089: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1090: A security hole exists in uuxqt(8) that may allow an
1091: attacker to gain root privileges.</a>
1.294 david 1092: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1093: A security hole exists in lpd(8) that may allow an
1094: attacker to gain root privileges if lpd is running.</a>
1.294 david 1095: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1096: A security hole exists in sendmail(8) that may allow an
1097: attacker on the local host to gain root privileges.</a>
1.294 david 1098: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1099: A kernel buffer overflow in the NFS code can be used to execute
1100: arbitrary code by users with mount privileges (only root by
1.181 millert 1101: default).</a>
1.294 david 1102: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1103: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1104: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1105: sshd(8) allows users to delete arbitrary files named "cookies"
1106: if X11 forwarding is enabled. X11 forwarding is disabled
1107: by default.</a>
1.294 david 1108: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1109: Programs using the fts routines can be tricked into changing
1110: into the wrong directory.</a>
1.294 david 1111: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1112: Sendmail signal handlers contain unsafe code,
1113: leading to numerous race conditions.</a>
1.173 deraadt 1114: </ul>
1115:
1116: <p>
1117: <li>
1.288 matthieu 1118: <a name="28"></a>
1.152 deraadt 1119:
1.294 david 1120: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1121: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1122: in <a href="anoncvs.html">OpenBSD current</a>. The
1123: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1124: you should update your machine.
1125:
1.152 deraadt 1126:
1127: <p>
1128: <ul>
1.294 david 1129: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1130: A security hole exists in uuxqt(8) that may allow an
1131: attacker to gain root privileges.</a>
1.294 david 1132: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1133: A security hole exists in lpd(8) that may allow an
1134: attacker to gain root privileges if lpd is running.</a>
1.294 david 1135: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1136: A security hole exists in sendmail(8) that may allow an
1137: attacker on the local host to gain root privileges.</a>
1.294 david 1138: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1139: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1140: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1141: Programs using the fts routines can be tricked into changing
1142: into the wrong directory.</a>
1.294 david 1143: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1144: Sendmail signal handlers contain unsafe code,
1145: leading to numerous race conditions.</a>
1.294 david 1146: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1147: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1148: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1149: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1150: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1151: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1152: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1153: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1154: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1155: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1156: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1157: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1158: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1159: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1160: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1161: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1162: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1163: rnd(4) did not use all of its input when written to.</a>
1.294 david 1164: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1165: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1166: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1167: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1168: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1169: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1170: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1171: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1172: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1173: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1174: </ul>
1175:
1176: <p>
1177: <li>
1.288 matthieu 1178: <a name="27"></a>
1.124 deraadt 1179:
1.294 david 1180: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1181: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1182: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1183: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1184:
1185: <p>
1186: <ul>
1.294 david 1187: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1188: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1189: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1190: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1191: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1192: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1193: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1194: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1195: (patch included)</a>
1.294 david 1196: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1197: X11 libraries have 2 potential overflows in xtrans code.
1198: (patch included)</a>
1.294 david 1199: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1200: Apache mod_rewrite and mod_vhost_alias modules could expose files
1201: on the server in certain configurations if used.
1202: (patch included)</a>
1.294 david 1203: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1204: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1205: TERMPATH and TERMCAP environment variables as it should.
1206: (patch included)</a>
1.294 david 1207: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1208: There are printf-style format string bugs in several privileged
1209: programs. (patch included)</a>
1.294 david 1210: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1211: libcurses honored terminal descriptions in the $HOME/.terminfo
1212: directory as well as in the TERMCAP environment variable for
1213: setuid and setgid applications.
1.146 deraadt 1214: (patch included)</a>
1.294 david 1215: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1216: A format string vulnerability exists in talkd(8).
1217: (patch included)</a>
1.294 david 1218: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1219: A format string vulnerability exists in the pw_error() function of the
1220: libutil library, yielding localhost root through chpass(1).
1221: (patch included)</a>
1.294 david 1222: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1223: Bad ESP/AH packets could cause a crash under certain conditions.
1224: (patch included)</a>
1.294 david 1225: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1226: A format string vulnerability (localhost root) exists in xlock(1).
1227: (patch included)</a>
1.294 david 1228: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1229: Various bugs found in X11 libraries have various side effects, almost
1230: completely denial of service in OpenBSD.
1231: (patch included)</a>
1.294 david 1232: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1233: Just like pretty much all the other unix ftp daemons
1234: on the planet, ftpd had a remote root hole in it.
1235: Luckily, ftpd was not enabled by default.
1.137 deraadt 1236: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1237: (patch included)</a>
1.294 david 1238: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1239: Mopd, very rarely used, contained some buffer overflows.
1240: (patch included)</a>
1.294 david 1241: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1242: libedit would check for a <b>.editrc</b> file in the current
1243: directory. Not known to be a real security issue, but a patch
1244: is available anyways.
1245: (patch included)</a>
1.294 david 1246: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1247: A serious bug in dhclient(8) could allow strings from a
1248: malicious dhcp server to be executed in the shell as root.
1249: (patch included)</a>
1.294 david 1250: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1251: A serious bug in isakmpd(8) policy handling wherein
1252: policy verification could be completely bypassed in isakmpd.
1253: (patch included)</a>
1.294 david 1254: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1255: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1256: should not be used, and results in security problems on
1257: other operating systems.</a>
1.294 david 1258: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1259: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1260: (patch included)</a>
1.294 david 1261: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1262: Improper use of ipf <i>keep-state</i> rules can result
1263: in firewall rules being bypassed. (patch included)</a>
1264:
1.124 deraadt 1265: </ul>
1266:
1267: <p>
1268: <li>
1.288 matthieu 1269: <a name="26"></a>
1.119 deraadt 1270:
1.294 david 1271: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1272: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1273: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1274: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1275:
1276: <p>
1277: <ul>
1.294 david 1278: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1279: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1280: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1281: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1282: Improper use of ipf <i>keep-state</i> rules can result
1283: in firewall rules being bypassed. (patch included)</a>
1.294 david 1284: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1285: xlockmore has a bug which a localhost attacker can use to gain
1286: access to the encrypted root password hash (which is normally
1.245 miod 1287: encoded using blowfish</a> (see
1.294 david 1288: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1289: crypt(3)</a>)
1.245 miod 1290: (patch included).
1.294 david 1291: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1292: Systems running with procfs enabled and mounted are
1293: vulnerable to a very tricky exploit. procfs is not
1294: mounted by default.
1295: (patch included).</a>
1.294 david 1296: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1297: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1298: thus exposing the system to a race where the aliases file
1299: did not exist.
1.119 deraadt 1300: (patch included).</a>
1.294 david 1301: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1302: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1303: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1304: A buffer overflow in the RSAREF code included in the
1305: USA version of libssl, is possibly exploitable in
1306: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1307: (patch included).<br></a>
1308: <strong>Update:</strong> Turns out that this was not exploitable
1309: in any of the software included in OpenBSD 2.6.
1.294 david 1310: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1311: Any user could change interface media configurations, resulting in
1312: a localhost denial of service attack.
1.121 deraadt 1313: (patch included).</a>
1.119 deraadt 1314: </ul>
1315:
1316: <p>
1317: <li>
1.288 matthieu 1318: <a name="25"></a>
1.106 deraadt 1319:
1.294 david 1320: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1321: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1322: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1323: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1324:
1.96 deraadt 1325: <p>
1.104 deraadt 1326: <ul>
1.294 david 1327: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1328: In cron(8), make sure argv[] is NULL terminated in the
1329: fake popen() and run sendmail as the user, not as root.
1330: (patch included).</a>
1.294 david 1331: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1332: filesystems had an overrun in their handling of uio_offset
1333: in their readdir() routines. (These filesystems are not
1334: enabled by default). (patch included).</a>
1.294 david 1335: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1336: when we execve() a new process. (patch included).</a>
1.294 david 1337: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1338: been handled by IPsec may be transmitted as cleartext.
1339: PF_KEY SA expirations may leak kernel resources.
1340: (patch included).</a>
1.294 david 1341: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1342: motd re-writing and change the find(1) to use -execdir
1343: (patch included).</a>
1.294 david 1344: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1345: users to chflags(2) or fchflags(2) on character or block devices
1346: which they may currently be the owner of (patch included).</a>
1.294 david 1347: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1348: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1349: </ul>
1350:
1.106 deraadt 1351: <p>
1352: <li>
1.288 matthieu 1353: <a name="24"></a>
1.235 miod 1354:
1.294 david 1355: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1356: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1357: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1358: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1359:
1.96 deraadt 1360: <p>
1.75 deraadt 1361: <ul>
1.294 david 1362: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1363: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1364: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1365: another kernel crash case caused by the <strong>crashme</strong>
1366: program (patch included).</a>
1.294 david 1367: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1368: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1369: (patch included).</a>
1.294 david 1370: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1371: existed in ping(8). (patch included).</a>
1.294 david 1372: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1373: the ipq, which could permit an attacker to cause a crash.
1374: (patch included).</a>
1.294 david 1375: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1376: kernel between accept(2) and select(2) could permit an attacker
1377: to hang sockets from remote.
1378: (patch included).</a>
1.294 david 1379: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1380: bog the machine excessively and cause problems.
1381: (patch included).</a>
1.294 david 1382: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1383: DDB interacted to possibly cause a crash.
1384: (patch included).</a>
1.294 david 1385: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1386: (patch included).</a>
1.294 david 1387: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1388: problem in bootpd(8). (patch included).</a>
1.294 david 1389: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1390: exploitable problem relating to environment variables in termcap
1391: and curses. (patch included).</a>
1.294 david 1392: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1393: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1394: </ul>
1395:
1.106 deraadt 1396: <p>
1397: <li>
1.288 matthieu 1398: <a name="23"></a>
1.235 miod 1399:
1.294 david 1400: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1401: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1402: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1403: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1404:
1.96 deraadt 1405: <p>
1.53 matthieu 1406: <ul>
1.294 david 1407: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1408: problem in bootpd(8). (patch included).</a>
1.294 david 1409: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1410: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1411: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1412: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1413: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1414: chpass(1) has a file descriptor leak which allows an
1415: attacker to modify /etc/master.passwd.</a>
1.294 david 1416: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1417: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1418: should not be executed with fd slots 0, 1, or 2 free.
1419: (patch included).</a>
1.294 david 1420: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1421: libraries (patches included).</a>
1.294 david 1422: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1423: processes too permissive (4th revision patch included).</a>
1.294 david 1424: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1425: of immutable and append-only file flags. (patch included).</a>
1.294 david 1426: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1427: if IPSEC is enabled (patch included).</a>
1.294 david 1428: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1429: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1430: </ul>
1.9 deraadt 1431:
1.106 deraadt 1432: <p>
1433: <li>
1.288 matthieu 1434: <a name="22"></a>
1.235 miod 1435:
1.294 david 1436: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1437: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1438: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1439: still exist in other operating systems. (The supplied patches are for
1440: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1441:
1.96 deraadt 1442: <p>
1.9 deraadt 1443: <ul>
1.294 david 1444: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1445: packets if IPSEC is enabled (patch included).</a>
1.294 david 1446: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1447: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1448: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1449: (patch included).</a>
1.294 david 1450: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1451: (patch included).</a>
1.294 david 1452: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1453: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1454: (patch included).</a>
1.294 david 1455: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1456: export (patch included).</a>
1.112 philen 1457: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1458: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1459: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1460: Acceptance.</a>
1.294 david 1461: A patch is available <a href="errata22.html#sourceroute">here</a>.
1462: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1463: flaw (patch included).</a>
1.294 david 1464: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1465: </ul>
1466:
1.106 deraadt 1467: <p>
1468: <li>
1.288 matthieu 1469: <a name="21"></a>
1.235 miod 1470:
1.294 david 1471: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1472: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1473: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1474: exist in other operating systems. (If you are running OpenBSD 2.1, we
1475: would strongly recommend an upgrade to the newest release, as this
1476: patch list only attempts at fixing the most important security
1477: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1478: security problems. Many of those problems were solved in ways which
1479: make it hard for us to provide patches).
1480:
1.96 deraadt 1481: <p>
1.52 deraadt 1482: <ul>
1.112 philen 1483: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1484: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1485: (patch included)</a>
1.112 philen 1486: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1487: </ul>
1.51 deraadt 1488:
1.106 deraadt 1489: <p>
1490: <li>
1.288 matthieu 1491: <a name="20"></a>
1.235 miod 1492:
1.294 david 1493: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1494: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1495: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1496: exist in other operating systems. (If you are running OpenBSD 2.0, we
1497: commend you for being there back in the old days!, but you're really
1498: missing out if you don't install a new version!)
1499:
1500: <p>
1501: <ul>
1.112 philen 1502: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1503: resolver (patch included)</a>
1504: <li>Many others... if people can hunt them down, please let me know
1505: and we'll put them up here.
1506: </ul>
1.51 deraadt 1507: <p>
1.106 deraadt 1508:
1.288 matthieu 1509: <a name="watching"></a>
1.294 david 1510: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1511:
1.21 deraadt 1512: Since we take a proactive stance with security, we are continually
1513: finding and fixing new security problems. Not all of these problems
1.80 espie 1514: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1515: confirmed to be exploitable; many simple bugs we fix do turn out to
1516: have security consequences we could not predict. We do not have the
1517: time resources to make these changes available in the above format.<p>
1.21 deraadt 1518:
1519: Thus there are usually minor security fixes in the current source code
1520: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1521: guarantee that these problems are of minimal impact and unproven
1.44 ian 1522: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1523: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1524:
1.45 deraadt 1525: People who are really concerned with security can do a number of
1526: things:<p>
1.21 deraadt 1527:
1528: <ul>
1529: <li>If you understand security issues, watch our
1.294 david 1530: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1531: eye out for things which appear security related. Since
1.21 deraadt 1532: exploitability is not proven for many of the fixes we make,
1533: do not expect the relevant commit message to say "SECURITY FIX!".
1534: If a problem is proven and serious, a patch will be available
1535: here very shortly after.
1.161 horacio 1536: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1537: security-announce mailing list</a> which will notify you for every
1.186 ian 1538: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1539: and instruct you on how to patch the problem.
1.21 deraadt 1540: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1541: complete system build from time to time (read /usr/src/Makefile
1542: carefully). Users can make the assumption that the current
1543: source tree always has stronger security than the previous release.
1.45 deraadt 1544: However, building your own system from source code is not trivial;
1.265 miod 1545: it is nearly 600MB of source code, and problems do occur as we
1.45 deraadt 1546: transition between major releases.
1.115 ericj 1547: <li>Install a binary snapshot for your
1.80 espie 1548: architecture, which are made available fairly often. For
1.29 deraadt 1549: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1550: </ul>
1551:
1.9 deraadt 1552: <p>
1.288 matthieu 1553: <a name="reporting"></a>
1.294 david 1554: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1555:
1.5 deraadt 1556: <p> If you find a new security problem, you can mail it to
1.294 david 1557: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1558: <br>
1.5 deraadt 1559: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1560: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1561:
1.107 deraadt 1562: <p>
1.288 matthieu 1563: <a name="papers"></a>
1.294 david 1564: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1565:
1566: A number of papers have been written by OpenBSD team members, about security
1567: related changes they have done in OpenBSD. The postscript versions of these
1.108 deraadt 1568: documents are available as follows.<p>
1.107 deraadt 1569:
1570: <ul>
1.113 deraadt 1571: <li>A Future-Adaptable Password Scheme.<br>
1.294 david 1572: <a href="events.html#usenix99">Usenix 1999</a>,
1573: by <a href="mailto:provos@openbsd.org">Niels Provos</a>,
1574: <a href="mailto:dm@openbsd.org">David Mazieres</a>.<br>
1575: <a href="papers/bcrypt-paper.ps">paper</a> and
1576: <a href="papers/bcrypt-slides.ps">slides</a>.
1.113 deraadt 1577: <p>
1578: <li>Cryptography in OpenBSD: An Overview.<br>
1.294 david 1579: <a href="events.html#usenix99">Usenix 1999</a>,
1580: by <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>,
1581: <a href="mailto:niklas@openbsd.org">Niklas Hallqvist</a>,
1582: <a href="mailto:art@openbsd.org">Artur Grabowski</a>,
1583: <a href="mailto:angelos@openbsd.org">Angelos D. Keromytis</a>,
1584: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1585: <a href="papers/crypt-paper.ps">paper</a> and
1586: <a href="papers/crypt-slides.ps">slides</a>.
1.113 deraadt 1587: <p>
1588: <li>strlcpy and strlcat -- consistent, safe, string copy and concatenation.<br>
1.294 david 1589: <a href="events.html#usenix99">Usenix 1999</a>,
1590: by <a href="mailto:millert@openbsd.org">Todd C. Miller</a>,
1591: <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>.<br>
1592: <a href="papers/strlcpy-paper.ps">paper</a> and
1593: <a href="papers/strlcpy-slides.ps">slides</a>.
1.113 deraadt 1594: <p>
1.118 deraadt 1595: <li>Dealing with Public Ethernet Jacks-Switches, Gateways, and Authentication.<br>
1.294 david 1596: <a href="events.html#lisa99">LISA 1999</a>,
1597: by <a href="mailto:beck@openbsd.org">Bob Beck</a>.<br>
1598: <a href="papers/authgw-paper.ps">paper</a> and
1599: <a href="papers/authgw-slides.ps">slides</a>.
1.118 deraadt 1600: <p>
1.153 jufi 1601: <li>Encrypting Virtual Memory<br>
1.294 david 1602: <a href="events.html#sec2000">Usenix Security 2000</a>,
1603: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1604: <a href="papers/swapencrypt.ps">paper</a> and
1605: <a href="papers/swapencrypt-slides.ps">slides</a>.
1.142 deraadt 1606: <p>
1.107 deraadt 1607: </ul>
1.294 david 1608: </ul>
1.106 deraadt 1609:
1.2 deraadt 1610: <hr>
1.294 david 1611: <a href="index.html"><img height=24 width=24 src="back.gif" border=0 alt="OpenBSD"></a>
1612: <a href="mailto:www@openbsd.org">www@openbsd.org</a>
1.24 deraadt 1613: <br>
1.355 ! miod 1614: <small>$OpenBSD: security.html,v 1.354 2008/02/08 06:35:03 brad Exp $</small>
1.1 deraadt 1615:
1.24 deraadt 1616: </body>
1617: </html>
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