Annotation of www/security.html, Revision 1.361
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1.20 deraadt 5: <title>OpenBSD Security</title>
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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>,
1.357 brad 65: <a href="#42">4.2</a>,
66: <a href="#43">4.3</a>.
1.114 philen 67: </td>
68: </tr>
69: </table>
1.56 deraadt 70: <hr>
71:
1.294 david 72: <a name="goals"></a>
1.278 deraadt 73: <ul>
1.294 david 74: <li><h3><font color="#e00000">Goal</font></h3><p>
1.22 deraadt 75:
1.14 deraadt 76: OpenBSD believes in strong security. Our aspiration is to be NUMBER
1.22 deraadt 77: ONE in the industry for security (if we are not already there). Our
78: open software development model permits us to take a more
79: uncompromising view towards increased security than Sun, SGI, IBM, HP,
80: or other vendors are able to. We can make changes the vendors would
1.27 deraadt 81: not make. Also, since OpenBSD is exported with <a href=crypto.html>
1.45 deraadt 82: cryptography</a>, we are able to take cryptographic approaches towards
83: fixing security problems.<p>
1.18 deraadt 84:
1.288 matthieu 85: <a name="disclosure"></a>
1.294 david 86: <li><h3><font color="#e00000">Full Disclosure</font></h3><p>
1.106 deraadt 87:
1.45 deraadt 88: Like many readers of the
1.196 jufi 89: <a href="http://online.securityfocus.com/archive/1">
1.18 deraadt 90: BUGTRAQ mailing list</a>,
1.106 deraadt 91: we believe in full disclosure of security problems. In the
92: operating system arena, we were probably the first to embrace
93: the concept. Many vendors, even of free software, still try
94: to hide issues from their users.<p>
95:
96: Security information moves very fast in cracker circles. On the other
97: hand, our experience is that coding and releasing of proper security
98: fixes typically requires about an hour of work -- very fast fix
99: turnaround is possible. Thus we think that full disclosure helps the
100: people who really care about security.<p>
101:
1.288 matthieu 102: <a name="process"></a>
1.294 david 103: <li><h3><font color="#e00000">Audit Process</font></h3><p>
1.15 deraadt 104:
1.12 deraadt 105: Our security auditing team typically has between six and twelve
1.45 deraadt 106: members who continue to search for and fix new security holes. We
107: have been auditing since the summer of 1996. The process we follow to
108: increase security is simply a comprehensive file-by-file analysis of
1.106 deraadt 109: every critical software component. We are not so much looking for
110: security holes, as we are looking for basic software bugs, and if
1.138 deraadt 111: years later someone discovers the problem used to be a security
1.106 deraadt 112: issue, and we fixed it because it was just a bug, well, all the
113: better. Flaws have been found in just about every area of the system.
114: Entire new classes of security problems have been found during our
115: audit, and often source code which had been audited earlier needs
116: re-auditing with these new flaws in mind. Code often gets audited
117: multiple times, and by multiple people with different auditing
118: skills.<p>
1.12 deraadt 119:
1.94 deraadt 120: Some members of our security auditing team worked for Secure Networks,
121: the company that made the industry's premier network security scanning
122: software package Ballista (Secure Networks got purchased by Network
123: Associates, Ballista got renamed to Cybercop Scanner, and well...)
124: That company did a lot of security research, and thus fit in well
1.106 deraadt 125: with the OpenBSD stance. OpenBSD passed Ballista's tests with flying
126: colours since day 1.<p>
1.31 deraadt 127:
1.34 deraadt 128: Another facet of our security auditing process is its proactiveness.
1.45 deraadt 129: In most cases we have found that the determination of exploitability
130: is not an issue. During our ongoing auditing process we find many
131: bugs, and endeavor to fix them even though exploitability is not
132: proven. We fix the bug, and we move on to find other bugs to fix. We
133: have fixed many simple and obvious careless programming errors in code
134: and only months later discovered that the problems were in fact
135: exploitable. (Or, more likely someone on
1.197 jufi 136: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>
1.45 deraadt 137: would report that other operating systems were vulnerable to a `newly
138: discovered problem', and then it would be discovered that OpenBSD had
139: been fixed in a previous release). In other cases we have been saved
140: from full exploitability of complex step-by-step attacks because we
141: had fixed one of the intermediate steps. An example of where we
1.94 deraadt 142: managed such a success is the lpd advisory that Secure Networks put out.
143: <p>
1.29 deraadt 144:
1.288 matthieu 145: <a name="newtech"></a>
1.294 david 146: <li><h3><font color="#e00000">New Technologies</font></h3><p>
1.278 deraadt 147:
148: As we audit source code, we often invent new ways of solving problems.
149: Sometimes these ideas have been used before in some random application
150: written somewhere, but perhaps not taken to the degree that we do.
151: <p>
152:
153: <ul>
154: <li>strlcpy() and strlcat()
155: <li>Memory protection purify
156: <ul>
157: <li>W^X
158: <li>.rodata segment
159: <li>Guard pages
160: <li>Randomized malloc()
161: <li>Randomized mmap()
162: <li>atexit() and stdio protection
163: </ul>
1.295 otto 164: <li>Privilege separation
1.278 deraadt 165: <li>Privilege revocation
166: <li>Chroot jailing
167: <li>New uids
168: <li>ProPolice
169: <li>... and others
170: </ul>
171: <p>
172:
1.294 david 173: <li><h3><font color="#e00000">The Reward</font></h3><p>
1.106 deraadt 174:
1.45 deraadt 175: Our proactive auditing process has really paid off. Statements like
1.35 deraadt 176: ``This problem was fixed in OpenBSD about 6 months ago'' have become
1.45 deraadt 177: commonplace in security forums like
1.197 jufi 178: <a href="http://online.securityfocus.com/archive/1">BUGTRAQ</a>.<p>
1.35 deraadt 179:
1.45 deraadt 180: The most intense part of our security auditing happened immediately
1.80 espie 181: before the OpenBSD 2.0 release and during the 2.0->2.1 transition,
1.45 deraadt 182: over the last third of 1996 and first half of 1997. Thousands (yes,
183: thousands) of security issues were fixed rapidly over this year-long
184: period; bugs like the standard buffer overflows, protocol
185: implementation weaknesses, information gathering, and filesystem
186: races. Hence most of the security problems that we encountered were
187: fixed before our 2.1 release, and then a far smaller number needed
188: fixing for our 2.2 release. We do not find as many problems anymore,
189: it is simply a case of diminishing returns. Recently the security
190: problems we find and fix tend to be significantly more obscure or
191: complicated. Still we will persist for a number of reasons:<p>
1.36 deraadt 192:
1.35 deraadt 193: <ul>
1.45 deraadt 194: <li>Occasionally we find a simple problem we missed earlier. Doh!
1.35 deraadt 195: <li>Security is like an arms race; the best attackers will continue
1.45 deraadt 196: to search for more complicated exploits, so we will too.
197: <li>Finding and fixing subtle flaws in complicated software is
198: a lot of fun.
1.35 deraadt 199: </ul>
1.106 deraadt 200: <p>
1.15 deraadt 201:
1.14 deraadt 202: The auditing process is not over yet, and as you can see we continue
1.28 deraadt 203: to find and fix new security flaws.<p>
1.12 deraadt 204:
1.288 matthieu 205: <a name="default"></a>
1.294 david 206: <li><h3><font color="#e00000">"Secure by Default"</font></h3><p>
1.106 deraadt 207:
208: To ensure that novice users of OpenBSD do not need to become security
209: experts overnight (a viewpoint which other vendors seem to have), we
210: ship the operating system in a Secure by Default mode. All non-essential
211: services are disabled. As the user/administrator becomes more familiar
212: with the system, he will discover that he has to enable daemons and other
213: parts of the system. During the process of learning how to enable a new
214: service, the novice is more likely to learn of security considerations.<p>
215:
216: This is in stark contrast to the increasing number of systems that
217: ship with NFS, mountd, web servers, and various other services enabled
218: by default, creating instantaneous security problems for their users
219: within minutes after their first install.<p>
220:
1.288 matthieu 221: <a name="crypto"></a>
1.294 david 222: <li><h3><font color="#e00000">Cryptography</font></h3><p>
1.106 deraadt 223:
224: And of course, since the OpenBSD project is based in Canada, it is possible
225: for us to integrate cryptography. For more information, read the page
1.116 deraadt 226: outlining <a href=crypto.html>what we have done with cryptography</a>.</p>
1.106 deraadt 227:
1.294 david 228: <li><h3><font color="#e00000">Advisories</font></h3><p>
1.106 deraadt 229:
230: <li>
1.357 brad 231: <a name="43"></a>
232:
233: <h3><font color="#e00000">OpenBSD 4.3 Security Advisories</font></h3>
234: These are the OpenBSD 4.3 advisories -- all these problems are solved
235: in <a href=anoncvs.html>OpenBSD current</a> and the
236: <a href=stable.html>patch branch</a>.
237:
238: <p>
239: <ul>
1.361 ! brad 240: <li><a href="errata43.html#003_xorg">July 15, 2008:
! 241: Multiple vulnerabilities in X.Org.</a>
1.359 brad 242: <li><a href="errata43.html#002_openssh2">April 3, 2008:
1.360 tobias 243: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 244: <li><a href="errata43.html#001_openssh">March 30, 2008:
245: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 246: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.357 brad 247: </ul>
248:
249:
250: <li>
1.348 merdely 251: <a name="42"></a>
252:
253: <h3><font color="#e00000">OpenBSD 4.2 Security Advisories</font></h3>
254: These are the OpenBSD 4.2 advisories -- all these problems are solved
255: in <a href=anoncvs.html>OpenBSD current</a> and the
256: <a href=stable.html>patch branch</a>.
257:
258: <p>
259: <ul>
1.361 ! brad 260: <li><a href="errata42.html#012_xorg2">July 15, 2008:
! 261: Multiple vulnerabilities in X.Org.</a>
1.359 brad 262: <li><a href="errata42.html#011_openssh2">April 3, 2008:
1.360 tobias 263: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 264: <li><a href="errata42.html#010_openssh">March 30, 2008:
265: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 266: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 267: <li><a href="errata42.html#009_ppp">March 7, 2008:
268: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 269: <li><a href="errata42.html#006_xorg">Feb 8, 2008:
270: Multiple vulnerabilities in X.Org.</a>
1.352 henning 271: <li><a href="errata42.html#005_ifrtlabel">Jan 11, 2008:
272: A missing NULL pointer check can lead to a kernel panic.</a>
273: <li><a href="errata42.html#004_pf">Nov 27, 2007:
274: A memory leak in pf can lead to machine lockups.</a>
1.351 okan 275: <li><a href="errata42.html#002_openssl">Oct 10, 2007:
276: Fix off-by-one overflow in OpenSSL.</a>
1.350 deraadt 277: <li><a href="errata42.html#001_dhcpd">Oct 9, 2007:
1.349 deraadt 278: Fix stack corruption problem in dhcpd(8).</a>
1.348 merdely 279: </ul>
280:
281: <li>
1.346 matthieu 282: <a name="41"></a>
283:
284: <h3><font color="#e00000">OpenBSD 4.1 Security Advisories</font></h3>
285: These are the OpenBSD 4.1 advisories -- all these problems are solved
286: in <a href=anoncvs.html>OpenBSD current</a> and the
287: <a href=stable.html>patch branch</a>.
288:
289: <p>
290: <ul>
1.359 brad 291: <li><a href="errata41.html#016_openssh2">April 3, 2008:
1.360 tobias 292: sshd(8) could possibly allow hijacking of X11-forwarded connections.</a>
1.357 brad 293: <li><a href="errata41.html#015_openssh">March 30, 2008:
294: sshd(8) could allow arbitrary commands to be executed via ~/.ssh/rc
1.358 brad 295: when a sshd_config(5) ForceCommand directive was in effect.</a>
1.356 henning 296: <li><a href="errata41.html#014_ppp">March 7, 2008:
297: Command prompt parsing buffer overflow in ppp.</a>
1.354 brad 298: <li><a href="errata41.html#012_xorg">Feb 8, 2008:
299: Multiple vulnerabilities in X.Org.</a>
300: <li><a href="errata41.html#011_openssl">Oct 10, 2007:
301: The SSL_get_shared_ciphers() function in OpenSSL contains
302: an off-by-one overflow.</a>
1.350 deraadt 303: <li><a href="errata41.html#010_dhcpd">Oct 9, 2007:
1.349 deraadt 304: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 305: <li><a href="errata41.html#009_file">Jul 9, 2007:
306: Fix possible heap overflow in file(1).</a>
1.346 matthieu 307: <li><a href="errata41.html#005_route6">Apr 27, 2007:
308: IPv6 type 0 route headers can be used to mount a DoS attack
309: against hosts and networks.</a>
310: <li><a href="errata41.html#004_xorg">Apr 27, 2007:
311: Multiple vulnerabilities in X.Org.</a>
312: <li><a href="errata41.html#001_mbuf">Apr 27, 2007:
313: Incorrect mbuf handling for ICMP6 packets.</a>
314: </ul>
315:
1.355 miod 316: <p>
317: OpenBSD 4.0 and earlier releases are not supported anymore. The following
318: paragraphs only list advisories issued while they were maintained; these
319: releases are likely to be affected by the advisories for more recent releases.
320: <br>
321:
1.346 matthieu 322: <li>
1.334 brad 323: <a name="40"></a>
324: <h3><font color="#e00000">OpenBSD 4.0 Security Advisories</font></h3>
325: These are the OpenBSD 4.0 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>
1.350 deraadt 331: <li><a href="errata40.html#016_dhcpd">Oct 9, 2007:
1.349 deraadt 332: Fix stack corruption problem in dhcpd(8).</a>
1.347 deraadt 333: <li><a href="errata40.html#015_file">Jul 9, 2007:
334: Fix possible heap overflow in file(1).</a>
1.343 deraadt 335: <li><a href="errata40.html#012_route6">Apr 23, 2007:
336: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 337: against hosts and networks.</a>
1.342 mbalmer 338: <li><a href="errata40.html#011_xorg">Apr 4, 2007:
339: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 340: <li><a href="errata40.html#m_dup1">Mar 7, 2007:
341: Incorrect mbuf handling for ICMP6 packets.</a>
1.339 deraadt 342: <li><a href="errata40.html#agp">Jan 3, 2007:
1.338 miod 343: Insufficient validation in vga(4) may allow an attacker to gain
344: root privileges on some i386 systems.</a>
1.339 deraadt 345: <li><a href="errata40.html#ldso">Nov 19, 2006:
1.337 deraadt 346: ld.so(1) fails to properly sanitize the environment.</a>
1.339 deraadt 347: <li><a href="errata40.html#systrace">Nov 4, 2006:
1.334 brad 348: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
349: found by Chris Evans.</a>
1.339 deraadt 350: <li><a href="errata40.html#openssl">Nov 4, 2006:
1.334 brad 351: Several problems have been found in OpenSSL.</a>
1.339 deraadt 352: <li><a href="errata40.html#httpd">Nov 4, 2006:
1.334 brad 353: httpd(8) does not sanitize the Expect header from an HTTP request
354: when it is reflected back in an error message, which might allow
355: cross-site scripting (XSS) style attacks.</a>
356: </ul>
357:
358: <li>
1.321 brad 359: <a name="39"></a>
360:
361: <h3><font color="#e00000">OpenBSD 3.9 Security Advisories</font></h3>
362: These are the OpenBSD 3.9 advisories -- all these problems are solved
363: in <a href=anoncvs.html>OpenBSD current</a> and the
364: <a href=stable.html>patch branch</a>.
365:
366: <p>
367: <ul>
1.343 deraadt 368: <li><a href="errata39.html#022_route6">Apr 23, 2007:
369: IPv6 type 0 route headers can be used to mount a DoS attack
1.344 deraadt 370: against hosts and networks.</a>
1.342 mbalmer 371: <li><a href="errata39.html#021_xorg">Apr 4, 2007:
372: Multiple vulnerabilities in X.Org.</a>
1.340 deraadt 373: <li><a href="errata39.html#m_dup1">Mar 7, 2007:
374: Incorrect mbuf handling for ICMP6 packets.</a>
1.338 miod 375: <li><a href="errata39.html#agp">Jan 3, 2007:
376: Insufficient validation in vga(4) may allow an attacker to gain
377: root privileges on some i386 systems.</a>
1.336 brad 378: <li><a href="errata39.html#ldso">Nov 19, 2006:
1.337 deraadt 379: ld.so(1) fails to properly sanitize the environment.</a>
1.333 deraadt 380: <li><a href="errata39.html#ssh">Oct 12, 2006:
1.332 brad 381: Fix 2 security bugs found in OpenSSH.</a>
1.333 deraadt 382: <li><a href="errata39.html#systrace">Oct 7, 2006:
1.331 brad 383: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 384: found by Chris Evans.</a>
1.333 deraadt 385: <li><a href="errata39.html#openssl2">Oct 7, 2006:
1.330 brad 386: Several problems have been found in OpenSSL.</a>
1.333 deraadt 387: <li><a href="errata39.html#httpd2">Oct 7, 2006:
1.330 brad 388: httpd(8) does not sanitize the Expect header from an HTTP request
389: when it is reflected back in an error message, which might allow
390: cross-site scripting (XSS) style attacks.</a>
1.333 deraadt 391: <li><a href="errata39.html#openssl">Sep 8, 2006:
1.329 brad 392: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
393: possible for an attacker to construct an invalid signature which
394: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.333 deraadt 395: <li><a href="errata39.html#bind">Sep 8, 2006:
1.328 brad 396: Two Denial of Service issues have been found with BIND.</a>
1.333 deraadt 397: <li><a href="errata39.html#sppp">Sep 2, 2006:
1.327 brad 398: Due to the failure to correctly validate LCP configuration option
399: lengths, it is possible for an attacker to send LCP packets via an
400: sppp(4) connection causing the kernel to panic.</a>
1.333 deraadt 401: <li><a href="errata39.html#isakmpd">Aug 25, 2006:
1.326 brad 402: A problem in isakmpd(8) caused IPsec to run partly without replay
403: protection.</a>
1.333 deraadt 404: <li><a href="errata39.html#sem">Aug 25, 2006:
1.326 brad 405: It is possible to cause the kernel to panic when more than the default
406: number of sempahores have been allocated.</a>
1.333 deraadt 407: <li><a href="errata39.html#dhcpd">Aug 25, 2006:
1.326 brad 408: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
409: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
410: option.</a>
1.333 deraadt 411: <li><a href="errata39.html#sendmail3">Aug 25, 2006:
1.326 brad 412: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 413: <li><a href="errata39.html#httpd">Jul 30, 2006:
1.325 brad 414: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
415: overflow.</a>
1.333 deraadt 416: <li><a href="errata39.html#sendmail2">Jun 15, 2006:
1.324 brad 417: A potential denial of service problem has been found in sendmail.</a>
1.333 deraadt 418: <li><a href="errata39.html#xorg">May 2, 2006:
1.322 brad 419: A buffer overflow exists in the Render extension of the X server.</a>
1.333 deraadt 420: <li><a href="errata39.html#sendmail">Mar 25, 2006:
1.321 brad 421: A race condition has been reported to exist in the handling by sendmail
422: of asynchronous signals.</a>
423: </ul>
424:
425: <li>
1.318 deraadt 426: <a name="38"></a>
427:
428: <h3><font color="#e00000">OpenBSD 3.8 Security Advisories</font></h3>
429: These are the OpenBSD 3.8 advisories -- all these problems are solved
430: in <a href=anoncvs.html>OpenBSD current</a> and the
431: <a href=stable.html>patch branch</a>.
432:
433: <p>
434: <ul>
1.332 brad 435: <li><a href="errata38.html#ssh2">Oct 12, 2006:
436: Fix 2 security bugs found in OpenSSH.</a>
1.330 brad 437: <li><a href="errata38.html#systrace">Oct 7, 2006:
1.331 brad 438: Fix for an integer overflow in systrace(4)'s STRIOCREPLACE support,
1.330 brad 439: found by Chris Evans.</a>
440: <li><a href="errata38.html#openssl2">Oct 7, 2006:
441: Several problems have been found in OpenSSL.</a>
442: <li><a href="errata38.html#httpd2">Oct 7, 2006:
443: httpd(8) does not sanitize the Expect header from an HTTP request
444: when it is reflected back in an error message, which might allow
445: cross-site scripting (XSS) style attacks.</a>
1.329 brad 446: <li><a href="errata38.html#openssl">Sep 8, 2006:
447: Due to incorrect PKCS#1 v1.5 padding validation in OpenSSL, it is
448: possible for an attacker to construct an invalid signature which
449: OpenSSL would accept as a valid PKCS#1 v1.5 signature.</a>
1.328 brad 450: <li><a href="errata38.html#bind">Sep 8, 2006:
451: Two Denial of Service issues have been found with BIND.</a>
1.327 brad 452: <li><a href="errata38.html#sppp">Sep 2, 2006:
453: Due to the failure to correctly validate LCP configuration option
454: lengths, it is possible for an attacker to send LCP packets via an
455: sppp(4) connection causing the kernel to panic.</a>
1.326 brad 456: <li><a href="errata38.html#isakmpd">Aug 25, 2006:
457: A problem in isakmpd(8) caused IPsec to run partly without replay
458: protection.</a>
459: <li><a href="errata38.html#sem">Aug 25, 2006:
460: It is possible to cause the kernel to panic when more than the default
461: number of sempahores have been allocated.</a>
462: <li><a href="errata38.html#dhcpd">Aug 25, 2006:
463: Due to an off-by-one error in dhcpd(8) it is possible to cause dhcpd(8)
464: to exit by sending a DHCPDISCOVER packet with a 32-byte client identifier
465: option.</a>
466: <li><a href="errata38.html#sendmail3">Aug 25, 2006:
467: A potential denial of service problem has been found in sendmail.</a>
1.325 brad 468: <li><a href="errata38.html#httpd">Jul 30, 2006:
469: httpd(8)'s mod_rewrite has a potentially exploitable off-by-one buffer
470: overflow.</a>
1.324 brad 471: <li><a href="errata38.html#sendmail2">Jun 15, 2006:
472: A potential denial of service problem has been found in sendmail.</a>
1.322 brad 473: <li><a href="errata38.html#xorg">May 2, 2006:
474: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 475: <li><a href="errata38.html#sendmail">Mar 25, 2006:
476: A race condition has been reported to exist in the handling by sendmail
477: of asynchronous signals.</a>
478: <li><a href="errata38.html#ssh">Feb 12, 2006:
1.320 brad 479: Josh Bressers has reported a weakness in OpenSSH caused due to the
480: insecure use of the system(3) function in scp(1) when performing copy
481: operations using filenames that are supplied by the user from the
482: command line.</a>
1.321 brad 483: <li><a href="errata38.html#fd">Jan 5, 2006:
1.319 brad 484: Do not allow users to trick suid programs into re-opening files via
485: /dev/fd.</a>
1.321 brad 486: <li><a href="errata38.html#perl">Jan 5, 2006:
1.319 brad 487: A buffer overflow has been found in the Perl interpreter with the
488: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 489: </ul>
490:
491: <li>
1.312 david 492: <a name="37"></a>
493:
494: <h3><font color="#e00000">OpenBSD 3.7 Security Advisories</font></h3>
495: These are the OpenBSD 3.7 advisories -- all these problems are solved
1.323 steven 496: in <a href="anoncvs.html">OpenBSD current</a>. The
497: <a href="stable.html">patch branch</a> for 3.7 is no longer being maintained,
498: you should update your machine.
1.312 david 499:
500: <p>
501: <ul>
1.322 brad 502: <li><a href="errata37.html#xorg">May 2, 2006:
503: A buffer overflow exists in the Render extension of the X server.</a>
1.321 brad 504: <li><a href="errata37.html#sendmail">Mar 25, 2006:
505: A race condition has been reported to exist in the handling by sendmail
506: of asynchronous signals.</a>
1.320 brad 507: <li><a href="errata37.html#ssh">Feb 12, 2006:
508: Josh Bressers has reported a weakness in OpenSSH caused due to the
509: insecure use of the system(3) function in scp(1) when performing copy
510: operations using filenames that are supplied by the user from the
511: command line.</a>
1.319 brad 512: <li><a href="errata37.html#fd">Jan 5, 2006:
513: Do not allow users to trick suid programs into re-opening files via
514: /dev/fd.</a>
515: <li><a href="errata37.html#perl">Jan 5, 2006:
516: A buffer overflow has been found in the Perl interpreter with the
517: sprintf function which may be exploitable under certain conditions.</a>
1.318 deraadt 518: <li><a href="errata37.html#libz2">Jul 21, 2005:
1.317 millert 519: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 520: <li><a href="errata37.html#libz">Jul 6, 2005:
1.316 millert 521: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.318 deraadt 522: <li><a href="errata37.html#sudo">Jun 20, 2005:
1.316 millert 523: Fix a race condition in sudo(8) that could allow a user
1.315 millert 524: to run arbitrary commands.</a>
1.318 deraadt 525: <li><a href="errata37.html#cvs">Jun 7, 2005:
1.313 brad 526: Fix a buffer overflow, memory leaks, and NULL pointer
527: dereference in cvs(1).</a>
1.312 david 528: </ul>
529:
530: <li>
1.301 miod 531: <a name="36"></a>
532:
533: <h3><font color="#e00000">OpenBSD 3.6 Security Advisories</font></h3>
534: These are the OpenBSD 3.6 advisories -- all these problems are solved
1.323 steven 535: in <a href="anoncvs.html">OpenBSD current</a>. The
536: <a href="stable.html">patch branch</a> for 3.6 is no longer being maintained,
537: you should update your machine.
1.301 miod 538:
539: <p>
1.302 markus 540: <ul>
1.317 millert 541: <li><a href="errata36.html#libz2">Jul 21, 2005:
542: Fix another buffer overflow in the zlib library that may be exploitable.</a>
1.316 millert 543: <li><a href="errata36.html#libz">Jul 6, 2005:
544: Fix a buffer overflow in the zlib library that may be exploitable.</a>
1.315 millert 545: <li><a href="errata36.html#sudo">Jun 20, 2005:
1.316 millert 546: Fix a race condition in sudo(8) that could allow a user
1.315 millert 547: to run arbitrary commands.</a>
1.311 deraadt 548: <li><a href="errata36.html#cvs">Apr 28, 2005:
1.310 brad 549: Fix a buffer overflow, memory leaks, and NULL pointer
550: dereference in cvs(1).</a>
1.311 deraadt 551: <li><a href="errata36.html#telnet">Mar 30, 2005:
1.309 brad 552: Due to buffer overflows in telnet(1), a malicious
553: server or man-in-the-middle attack could allow
554: execution of arbitrary code with the privileges of
555: the user invoking telnet(1).</a>
1.311 deraadt 556: <li><a href="errata36.html#copy">Mar 16, 2005:
1.307 brad 557: More stringent checking should be done in the copy(9)
558: functions to prevent their misuse.</a>
1.311 deraadt 559: <li><a href="errata36.html#locore">Feb 28, 2005:
1.306 brad 560: More stringent checking should be done in the copy(9)
561: functions to prevent their misuse.</a>
1.311 deraadt 562: <li><a href="errata36.html#httpd">Jan 12, 2005:
1.304 brad 563: httpd(8)'s mod_include module fails to properly validate
564: the length of user supplied tag strings prior to copying
1.305 brad 565: them to a local buffer, causing a buffer overflow.</a>
1.311 deraadt 566: <li><a href="errata36.html#pfkey">Dec 14, 2004:
1.302 markus 567: On systems running isakmpd(8) it is possible for a local
568: user to cause kernel memory corruption and system panic by
1.303 markus 569: setting ipsec(4) credentials on a socket.</a>
1.302 markus 570: </ul>
1.301 miod 571:
572: <li>
1.288 matthieu 573: <a name="35"></a>
1.279 deraadt 574:
1.294 david 575: <h3><font color="#e00000">OpenBSD 3.5 Security Advisories</font></h3>
1.279 deraadt 576: These are the OpenBSD 3.5 advisories -- all these problems are solved
1.314 miod 577: in <a href="anoncvs.html">OpenBSD current</a>. The
578: <a href="stable.html">patch branch</a> for 3.5 is no longer being maintained,
579: you should update your machine.
1.279 deraadt 580:
581: <p>
582: <ul>
1.310 brad 583: <li><a href="errata35.html#cvs4">Apr 28, 2005:
584: Fix a buffer overflow, memory leaks, and NULL pointer
585: dereference in cvs(1).</a>
1.309 brad 586: <li><a href="errata35.html#telnet">Mar 30, 2005:
587: Due to buffer overflows in telnet(1), a malicious
588: server or man-in-the-middle attack could allow
589: execution of arbitrary code with the privileges of
590: the user invoking telnet(1).</a>
1.308 brad 591: <li><a href="errata35.html#copy">Mar 16, 2005:
1.307 brad 592: More stringent checking should be done in the copy(9)
593: functions to prevent their misuse.</a>
1.306 brad 594: <li><a href="errata35.html#locore">Feb 28, 2005:
595: More stringent checking should be done in the copy(9)
596: functions to prevent their misuse.</a>
1.304 brad 597: <li><a href="errata35.html#httpd3">Jan 12, 2005:
598: httpd(8)'s mod_include module fails to properly validate
599: the length of user supplied tag strings prior to copying
1.305 brad 600: them to a local buffer, causing a buffer overflow.</a>
1.302 markus 601: <li><a href="errata35.html#pfkey">Dec 14, 2004:
602: On systems running isakmpd(8) it is possible for a local
603: user to cause kernel memory corruption and system panic by
1.303 markus 604: setting ipsec(4) credentials on a socket.</a>
1.301 miod 605: <li><a href="errata35.html#radius">Sep 20, 2004:
1.299 millert 606: Radius-based authentication is vulnerable to spoofed replies.</a>
1.301 miod 607: <li><a href="errata35.html#xpm">Sep 16, 2004:
1.298 brad 608: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.301 miod 609: <li><a href="errata35.html#httpd2"> Sep 10, 2004:
1.297 brad 610: httpd(8)'s mod_rewrite module can be made to write one zero byte in
611: an arbitrary memory position outside of a char array, causing a DoS
612: or possibly buffer overflows.</a>
1.301 miod 613: <li><a href="errata35.html#httpd"> Jun 12, 2004:
1.300 deraadt 614: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.301 miod 615: <li><a href="errata35.html#isakmpd"> Jun 10, 2004:
1.291 hshoexer 616: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 617: an attacker can delete IPsec tunnels at will.</a>
1.301 miod 618: <li><a href="errata35.html#cvs3"> Jun 9, 2004:
1.290 millert 619: Multiple remote vulnerabilities have been found in the cvs(1)
620: server which can be used by CVS clients to crash or execute
1.293 brad 621: arbitrary code on the server.</a>
1.301 miod 622: <li><a href="errata35.html#kerberos"> May 30, 2004:
1.289 beck 623: kdc(8) performs inadequate checking of request fields, leading
624: to the possibility of principal impersonation from other
625: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.301 miod 626: <li><a href="errata35.html#xdm"> May 26, 2004:
1.287 matthieu 627: xdm(1) ignores the requestPort resource and creates a
1.293 brad 628: listening socket regardless of the setting in xdm-config.</a>
1.301 miod 629: <li><a href="errata35.html#cvs2"> May 20, 2004:
1.286 otto 630: A buffer overflow in the cvs(1) server has been found,
631: which can be used by CVS clients to execute arbitrary code on
1.293 brad 632: the server.</a>
1.301 miod 633: <li><a href="errata35.html#procfs"> May 13, 2004:
1.282 tedu 634: Integer overflow problems were found in procfs, allowing
1.293 brad 635: reading of arbitrary kernel memory.</a>
1.301 miod 636: <li><a href="errata35.html#cvs"> May 5, 2004:
1.281 otto 637: Pathname validation problems have been found in cvs(1),
638: allowing clients and servers access to files outside the
1.293 brad 639: repository or local CVS tree.</a>
1.279 deraadt 640: </ul>
641:
642: <p>
643: <li>
1.288 matthieu 644: <a name="34"></a>
1.261 david 645:
1.294 david 646: <h3><font color="#e00000">OpenBSD 3.4 Security Advisories</font></h3>
1.261 david 647: These are the OpenBSD 3.4 advisories -- all these problems are solved
1.301 miod 648: in <a href="anoncvs.html">OpenBSD current</a>. The
649: <a href="stable.html">patch branch</a> for 3.4 is no longer being maintained,
650: you should update your machine.
1.261 david 651: <p>
652: <ul>
1.302 markus 653: <li><a href="errata34.html#pfkey">Dec 14, 2004:
654: On systems running isakmpd(8) it is possible for a local
655: user to cause kernel memory corruption and system panic by
1.303 markus 656: setting ipsec(4) credentials on a socket.</a>
1.298 brad 657: <li><a href="errata34.html#xpm">Sep 16, 2004:
658: The Xpm library has vulnerabilities when parsing malicious images.</a>
1.297 brad 659: <li><a href="errata34.html#httpd4"> Sep 10, 2004:
660: httpd(8)'s mod_rewrite module can be made to write one zero byte in
661: an arbitrary memory position outside of a char array, causing a DoS
662: or possibly buffer overflows.</a>
1.294 david 663: <li><a href="errata34.html#httpd3"> Jun 12, 2004:
1.300 deraadt 664: Multiple vulnerabilities have been found in httpd(8) / mod_ssl.</a>
1.294 david 665: <li><a href="errata34.html#isakmpd3"> Jun 10, 2004:
1.292 brad 666: isakmpd(8) still has issues with unauthorized SA deletion,
1.293 brad 667: an attacker can delete IPsec tunnels at will.</a>
1.294 david 668: <li><a href="errata34.html#cvs3"> Jun 9, 2004:
1.290 millert 669: Multiple remote vulnerabilities have been found in the cvs(1)
670: server which can be used by CVS clients to crash or execute
1.293 brad 671: arbitrary code on the server.</a>
1.294 david 672: <li><a href="errata34.html#kerberos"> May 30, 2004:
1.289 beck 673: kdc(8) performs inadequate checking of request fields, leading
674: to the possibility of principal impersonation from other
675: Kerberos realms if they are trusted with a cross-realm trust.</a>
1.294 david 676: <li><a href="errata34.html#cvs2"> May 20, 2004:
1.286 otto 677: A buffer overflow in the cvs(1) server has been found,
678: which can be used by CVS clients to execute arbitrary code on
679: the server.</a>
1.294 david 680: <li><a href="errata34.html#procfs"> May 13, 2004:
1.282 tedu 681: Integer overflow problems were found in procfs, allowing
682: reading of arbitrary kernel memory.</a>
1.294 david 683: <li><a href="errata34.html#cvs"> May 5, 2004:
1.281 otto 684: Pathname validation problems have been found in cvs(1),
685: allowing clients and servers access to files outside the
686: repository or local CVS tree.</a>
1.294 david 687: <li><a href="errata34.html#openssl"> March 17, 2004:
1.277 millert 688: A missing check for a NULL-pointer dereference may allow a
1.281 otto 689: remote attacker to crash applications using OpenSSL.</a>
1.294 david 690: <li><a href="errata34.html#isakmpd2"> March 17, 2004:
1.276 brad 691: Defects in the payload validation and processing functions of
692: isakmpd have been discovered. An attacker could send malformed
693: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 694: <li><a href="errata34.html#httpd2"> March 13, 2004:
1.275 brad 695: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
696: access module, using IP addresses without a netmask on big endian
697: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 698: <li><a href="errata34.html#ip6"> February 8, 2004:
1.272 dhartmei 699: An IPv6 MTU handling problem exists that could be used by an
700: attacker to cause a denial of service attack.</a>
1.294 david 701: <li><a href="errata34.html#sysvshm"> February 5, 2004:
1.271 millert 702: A reference counting bug in shmat(2) could be used to write to
703: kernel memory under certain circumstances.</a>
1.294 david 704: <li><a href="errata34.html#isakmpd">January 13, 2004:
1.266 brad 705: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 706: by Thomas Walpuski.</a>
1.294 david 707: <li><a href="errata34.html#ibcs2">November 17, 2003:
1.264 henning 708: It may be possible for a local user to overrun the stack in
709: compat_ibcs2(8) and cause a kernel panic.</a>
1.294 david 710: <li><a href="errata34.html#asn1">November 1, 2003:
1.262 margarid 711: The use of certain ASN.1 encodings or malformed public keys may
712: allow an attacker to mount a denial of service attack against
713: applications linked with ssl(3).</a>
1.261 david 714: </ul>
715:
716: <li>
1.288 matthieu 717: <a name="33"></a>
1.246 deraadt 718:
1.294 david 719: <h3><font color="#e00000">OpenBSD 3.3 Security Advisories</font></h3>
1.246 deraadt 720: These are the OpenBSD 3.3 advisories -- all these problems are solved
1.294 david 721: in <a href="anoncvs.html">OpenBSD current</a>. The
722: <a href="stable.html">patch branch</a> for 3.3 is no longer being maintained,
1.284 otto 723: you should update your machine.
1.246 deraadt 724: <p>
725: <ul>
1.294 david 726: <li><a href="errata33.html#cvs"> May 5, 2004:
1.281 otto 727: Pathname validation problems have been found in cvs(1),
728: allowing clients and servers access to files outside the
729: repository or local CVS tree.</a>
1.294 david 730: <li><a href="errata33.html#openssl"> March 17, 2004:
1.277 millert 731: A missing check for a NULL-pointer dereference may allow a
1.281 otto 732: remote attacker to crash applications using OpenSSL.</a>
1.294 david 733: <li><a href="errata33.html#isakmpd2"> March 17, 2004:
1.276 brad 734: Defects in the payload validation and processing functions of
735: isakmpd have been discovered. An attacker could send malformed
736: ISAKMP messages and cause isakmpd to crash or to loop endlessly.</a>
1.294 david 737: <li><a href="errata33.html#httpd2"> March 13, 2004:
1.275 brad 738: Due to a bug in the parsing of Allow/Deny rules for httpd(8)'s
739: access module, using IP addresses without a netmask on big endian
740: 64-bit platforms causes the rules to fail to match.</a>
1.294 david 741: <li><a href="errata33.html#ip6"> February 8, 2004:
1.275 brad 742: An IPv6 MTU handling problem exists that could be used by an
743: attacker to cause a denial of service attack.</a>
1.294 david 744: <li><a href="errata33.html#sysvshm"> February 5, 2004:
1.271 millert 745: A reference counting bug in shmat(2) could be used to write to
746: kernel memory under certain circumstances.</a>
1.294 david 747: <li><a href="errata33.html#isakmpd">January 15, 2004:
1.268 brad 748: Several message handling flaws in isakmpd(8) have been reported
1.271 millert 749: by Thomas Walpuski.</a>
1.294 david 750: <li><a href="errata33.html#ibcs2">November 17, 2003:
1.264 henning 751: It may be possible for a local user to execute arbitrary code
752: resulting in escalation of privileges due to a stack overrun
753: in compat_ibcs2(8).</a>
1.294 david 754: <li><a href="errata33.html#asn1">October 1, 2003:
1.257 millert 755: The use of certain ASN.1 encodings or malformed public keys may
756: allow an attacker to mount a denial of service attack against
757: applications linked with ssl(3).</a>
1.294 david 758: <li><a href="errata33.html#pfnorm">September 24, 2003:
1.258 beck 759: Access of freed memory in pf(4) could be used to
1.260 margarid 760: remotely panic a machine using scrub rules.</a>
1.294 david 761: <li><a href="errata33.html#sendmail">September 17, 2003:
1.256 millert 762: A buffer overflow in the address parsing in
763: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 764: <li><a href="errata33.html#sshbuffer">September 16, 2003:
1.255 millert 765: OpenSSH versions prior to 3.7 contains a buffer management error
766: that is potentially exploitable.</a>
1.294 david 767: <li><a href="errata33.html#sysvsem">September 10, 2003:
1.254 millert 768: Root may be able to reduce the security level by taking advantage of
769: an integer overflow when the semaphore limits are made very large.</a>
1.294 david 770: <li><a href="errata33.html#semget">August 20, 2003:
1.252 millert 771: An improper bounds check in the kernel may allow a local user
772: to panic the kernel.</a>
1.294 david 773: <li><a href="errata33.html#realpath">August 4, 2003:
1.249 millert 774: An off-by-one error exists in the C library function realpath(3)
775: may allow an attacker to gain escalated privileges.</a>
1.246 deraadt 776: </ul>
777:
1.265 miod 778:
1.247 david 779: <p>
1.246 deraadt 780: <li>
1.288 matthieu 781: <a name="32"></a>
1.224 deraadt 782:
1.294 david 783: <h3><font color="#e00000">OpenBSD 3.2 Security Advisories</font></h3>
1.224 deraadt 784: These are the OpenBSD 3.2 advisories -- all these problems are solved
1.294 david 785: in <a href="anoncvs.html">OpenBSD current</a>. The
786: <a href="stable.html">patch branch</a> for 3.2 is no longer being maintained,
1.265 miod 787: you should update your machine.
1.224 deraadt 788: <p>
789: <ul>
1.294 david 790: <li><a href="errata32.html#asn1">October 1, 2003:
1.257 millert 791: The use of certain ASN.1 encodings or malformed public keys may
792: allow an attacker to mount a denial of service attack against
793: applications linked with ssl(3). This does not affect OpenSSH.</a>
1.294 david 794: <li><a href="errata32.html#pfnorm">September 24, 2003:
1.258 beck 795: Access of freed memory in pf(4) could be used to
1.260 margarid 796: remotely panic a machine using scrub rules.</a>
1.294 david 797: <li><a href="errata32.html#sendmail4">September 17, 2003:
1.256 millert 798: A buffer overflow in the address parsing in
799: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 800: <li><a href="errata32.html#sshbuffer">September 16, 2003:
1.255 millert 801: OpenSSH versions prior to 3.7 contains a buffer management error
802: that is potentially exploitable.</a>
1.294 david 803: <li><a href="errata32.html#sendmail3">August 25, 2003:
1.253 brad 804: Fix for a potential security issue in
805: sendmail(8) with respect to DNS maps.</a>
1.294 david 806: <li><a href="errata32.html#realpath">August 4, 2003:
1.249 millert 807: An off-by-one error exists in the C library function realpath(3)
808: may allow an attacker to gain escalated privileges.</a>
1.294 david 809: <li><a href="errata32.html#sendmail2">March 31, 2003:
1.244 miod 810: A buffer overflow in the address parsing in
811: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 812: <li><a href="errata32.html#kerberos">March 24, 2003:
1.242 millert 813: A cryptographic weaknesses in the Kerberos v4 protocol can be
814: exploited on Kerberos v5 as well.</a>
1.294 david 815: <li><a href="errata32.html#kpr">March 19, 2003:
1.241 jufi 816: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 817: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 818: <li><a href="errata32.html#blinding">March 18, 2003:
1.239 miod 819: Various SSL and TLS operations in OpenSSL are vulnerable to
820: timing attacks.</a>
1.294 david 821: <li><a href="errata32.html#lprm">March 5, 2003:
1.238 millert 822: A buffer overflow in lprm(1) may allow an attacker to elevate
823: privileges to user daemon.</a>.
1.294 david 824: <li><a href="errata32.html#sendmail">March 3, 2003:
1.237 miod 825: A buffer overflow in the envelope comments processing in
826: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 827: <li><a href="errata32.html#httpd">February 25, 2003:
1.236 margarid 828: httpd(8) leaks file inode numbers via ETag header as well as
829: child PIDs in multipart MIME boundary generation. This could
830: lead, for example, to NFS exploitation because it uses inode
831: numbers as part of the file handle.</a>
1.294 david 832: <li><a href="errata32.html#ssl">February 22, 2003:
1.234 margarid 833: In ssl(8) an information leak can occur via timing by performing
834: a MAC computation even if incorrect block cipher padding has
835: been found, this is a countermeasure. Also, check for negative
836: sizes, in allocation routines.</a>
1.294 david 837: <li><a href="errata32.html#cvs">January 20, 2003:
1.232 millert 838: A double free exists in cvs(1) that could lead to privilege
839: escalation for cvs configurations where the cvs command is
1.233 margarid 840: run as a privileged user.</a>
1.294 david 841: <li><a href="errata32.html#named">November 14, 2002:
1.230 millert 842: A buffer overflow exists in named(8) that could lead to a
843: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 844: <li><a href="errata32.html#pool">November 6, 2002:
1.233 margarid 845: A logic error in the pool kernel memory allocator could cause
846: memory corruption in low-memory situations, causing the system
847: to crash.</a>
1.294 david 848: <li><a href="errata32.html#smrsh">November 6, 2002:
1.229 miod 849: An attacker can bypass smrsh(8)'s restrictions and execute
850: arbitrary commands with the privileges of his own account.</a>
1.294 david 851: <li><a href="errata32.html#pfbridge">November 6, 2002:
1.233 margarid 852: Network bridges running pf with scrubbing enabled could cause
853: mbuf corruption, causing the system to crash.</a>
1.294 david 854: <li><a href="errata32.html#kadmin">October 21, 2002:
1.228 miod 855: A buffer overflow can occur in the kadmind(8) daemon, leading
856: to possible remote crash or exploit.</a>
1.224 deraadt 857: </ul>
858:
1.227 miod 859: <p>
860: <li>
1.288 matthieu 861: <a name="31"></a>
1.203 deraadt 862:
1.294 david 863: <h3><font color="#e00000">OpenBSD 3.1 Security Advisories</font></h3>
1.203 deraadt 864: These are the OpenBSD 3.1 advisories -- all these problems are solved
1.294 david 865: in <a href="anoncvs.html">OpenBSD current</a>. The
866: <a href="stable.html">patch branch</a> for 3.1 is no longer being maintained,
1.258 beck 867: you should update your machine.
1.203 deraadt 868:
869: <p>
870: <ul>
1.294 david 871: <li><a href="errata31.html#sendmail2">March 31, 2003:
1.244 miod 872: A buffer overflow in the address parsing in
873: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 874: <li><a href="errata31.html#kerberos">March 24, 2003:
1.242 millert 875: A cryptographic weaknesses in the Kerberos v4 protocol can be
876: exploited on Kerberos v5 as well.</a>
1.294 david 877: <li><a href="errata31.html#kpr">March 19, 2003:
1.241 jufi 878: OpenSSL is vulnerable to an extension of the ``Bleichenbacher'' attack
1.240 miod 879: designed by Czech researchers Klima, Pokorny and Rosa.</a>
1.294 david 880: <li><a href="errata31.html#blinding">March 18, 2003:
1.239 miod 881: Various SSL and TLS operations in OpenSSL are vulnerable to
882: timing attacks.</a>
1.294 david 883: <li><a href="errata31.html#lprm">March 4, 2003:
1.238 millert 884: A buffer overflow in lprm(1) may allow an attacker to gain
885: root privileges.</a>
1.294 david 886: <li><a href="errata31.html#sendmail">March 3, 2003:
1.237 miod 887: A buffer overflow in the envelope comments processing in
888: sendmail(8) may allow an attacker to gain root privileges.</a>
1.294 david 889: <li><a href="errata31.html#ssl2">February 23, 2003:
1.235 miod 890: In ssl(8) an information leak can occur via timing by performing
891: a MAC computation even if incorrect block cipher padding has
892: been found, this is a countermeasure. Also, check for negative
893: sizes, in allocation routines.</a>
1.294 david 894: <li><a href="errata31.html#cvs">January 20, 2003:
1.232 millert 895: A double free exists in cvs(1) that could lead to privilege
896: escalation for cvs configurations where the cvs command is
1.294 david 897: run as a privileged user</a>.
898: <li><a href="errata31.html#named">November 14, 2002:
1.230 millert 899: A buffer overflow exists in named(8) that could lead to a
900: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 901: <li><a href="errata31.html#kernresource">November 6, 2002:
1.229 miod 902: Incorrect argument checking in the getitimer(2) system call
903: may allow an attacker to crash the system.</a>
1.294 david 904: <li><a href="errata31.html#smrsh">November 6, 2002:
1.229 miod 905: An attacker can bypass smrsh(8)'s restrictions and execute
906: arbitrary commands with the privileges of his own account.</a>
1.294 david 907: <li><a href="errata31.html#kadmin">October 21, 2002:
1.226 miod 908: A buffer overflow can occur in the kadmind(8) daemon, leading
909: to possible remote crash or exploit.</a>
1.294 david 910: <li><a href="errata31.html#kerntime">October 2, 2002:
1.222 jason 911: Incorrect argument checking in the setitimer(2) system call
912: may allow an attacker to write to kernel memory.</a>
1.294 david 913: <li><a href="errata31.html#scarg">August 11, 2002:
1.221 provos 914: An insufficient boundary check in the select system call
1.220 miod 915: allows an attacker to overwrite kernel memory and execute arbitrary code
916: in kernel context.</a>
1.294 david 917: <li><a href="errata31.html#ssl">July 30, 2002:
1.218 miod 918: Several remote buffer overflows can occur in the SSL2 server and SSL3
919: client of the ssl(8) library, as in the ASN.1 parser code in the
920: crypto(3) library, all of them being potentially remotely
921: exploitable.</a>
1.294 david 922: <li><a href="errata31.html#xdr">July 29, 2002:
1.218 miod 923: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
924: possible remote crash.</a>
1.294 david 925: <li><a href="errata31.html#pppd">July 29, 2002:
1.218 miod 926: A race condition exists in the pppd(8) daemon which may cause it to
927: alter the file permissions of an arbitrary file.</a>
1.294 david 928: <li><a href="errata31.html#isakmpd">July 5, 2002:
1.218 miod 929: Receiving IKE payloads out of sequence can cause isakmpd(8) to
930: crash.</a>
1.294 david 931: <li><a href="errata31.html#ktrace">June 27, 2002:
1.215 miod 932: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 933: <li><a href="errata31.html#modssl">June 26, 2002:
1.213 miod 934: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 935: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 936: <li><a href="errata31.html#resolver">June 25, 2002:
1.212 millert 937: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 938: <li><a href="errata31.html#sshd">June 24, 2002:
1.216 deraadt 939: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 940: input validation error that can result in an integer overflow and
941: privilege escalation.</a>
1.294 david 942: <li><a href="errata31.html#httpd">June 19, 2002:
1.211 miod 943: A buffer overflow can occur during the interpretation of chunked
944: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 945: <li><a href="errata31.html#sshbsdauth">May 22, 2002:
1.209 markus 946: Under certain conditions, on systems using YP with netgroups
947: in the password database, it is possible that sshd(8) does
948: ACL checks for the requested user name but uses the password
949: database entry of a different user for authentication. This
950: means that denied users might authenticate successfully
951: while permitted users could be locked out.</a>
1.294 david 952: <li><a href="errata31.html#fdalloc2">May 8, 2002:
1.208 millert 953: A race condition exists that could defeat the kernel's
954: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 955: <li><a href="errata31.html#sudo">April 25, 2002:
1.205 millert 956: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 957: <li><a href="errata31.html#sshafs">April 22, 2002:
1.205 millert 958: A local user can gain super-user privileges due to a buffer
959: overflow in sshd(8) if AFS has been configured on the system
960: or if KerberosTgtPassing or AFSTokenPassing has been enabled
961: in the sshd_config file.</a>
1.203 deraadt 962: </ul>
963:
1.235 miod 964: <p>
1.203 deraadt 965: <li>
1.288 matthieu 966: <a name="30"></a>
1.187 deraadt 967:
1.294 david 968: <h3><font color="#e00000">OpenBSD 3.0 Security Advisories</font></h3>
1.187 deraadt 969: These are the OpenBSD 3.0 advisories -- all these problems are solved
1.294 david 970: in <a href="anoncvs.html">OpenBSD current</a>. The
971: <a href="stable.html">patch branch</a> for 3.0 is no longer being maintained,
1.258 beck 972: you should update your machine.
1.187 deraadt 973:
974: <p>
975: <ul>
1.294 david 976: <li><a href="errata30.html#named">November 14, 2002:
1.230 millert 977: A buffer overflow exists in named(8) that could lead to a
978: remote crash or code execution as user named in a chroot jail.</a>
1.294 david 979: <li><a href="errata30.html#kernresource">November 6, 2002:
1.229 miod 980: Incorrect argument checking in the getitimer(2) system call
981: may allow an attacker to crash the system.</a>
1.294 david 982: <li><a href="errata30.html#smrsh">November 6, 2002:
1.229 miod 983: An attacker can bypass smrsh(8)'s restrictions and execute
984: arbitrary commands with the privileges of his own account.</a>
1.294 david 985: <li><a href="errata30.html#kadmin">October 21, 2002:
1.226 miod 986: A buffer overflow can occur in the kadmind(8) daemon, leading
987: to possible remote crash or exploit.</a>
1.294 david 988: <li><a href="errata30.html#kerntime">October 7, 2002:
1.223 miod 989: Incorrect argument checking in the setitimer(2) system call
990: may allow an attacker to write to kernel memory.</a>
1.294 david 991: <li><a href="errata30.html#scarg">August 11, 2002:
1.220 miod 992: An insufficient boundary check in the select and poll system calls
993: allows an attacker to overwrite kernel memory and execute arbitrary code
994: in kernel context.</a>
1.294 david 995: <li><a href="errata30.html#ssl">July 30, 2002:
1.218 miod 996: Several remote buffer overflows can occur in the SSL2 server and SSL3
997: client of the ssl(8) library, as in the ASN.1 parser code in the
998: crypto(3) library, all of them being potentially remotely
999: exploitable.</a>
1.294 david 1000: <li><a href="errata30.html#xdr">July 29, 2002:
1.218 miod 1001: A buffer overflow can occur in the xdr_array(3) RPC code, leading to
1002: possible remote crash.</a>
1.294 david 1003: <li><a href="errata30.html#pppd">July 29, 2002:
1.218 miod 1004: A race condition exists in the pppd(8) daemon which may cause it to
1005: alter the file permissions of an arbitrary file.</a>
1.294 david 1006: <li><a href="errata30.html#isakmpd2">July 5, 2002:
1.218 miod 1007: Receiving IKE payloads out of sequence can cause isakmpd(8) to
1008: crash.</a>
1.294 david 1009: <li><a href="errata30.html#ktrace">June 27, 2002:
1.215 miod 1010: The kernel would let any user ktrace set[ug]id processes.</a>
1.294 david 1011: <li><a href="errata30.html#resolver">June 25, 2002:
1.212 millert 1012: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1013: <li><a href="errata30.html#sshdauth">June 24, 2002:
1.216 deraadt 1014: All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an
1.213 miod 1015: input validation error that can result in an integer overflow and
1016: privilege escalation.</a>
1.294 david 1017: <li><a href="errata30.html#modssl">June 24, 2002:
1.213 miod 1018: A buffer overflow can occur in the .htaccess parsing code in
1.214 miod 1019: mod_ssl httpd module, leading to possible remote crash or exploit.</a>
1.294 david 1020: <li><a href="errata30.html#httpd">June 19, 2002:
1.213 miod 1021: A buffer overflow can occur during the interpretation of chunked
1022: encoding in httpd(8), leading to possible remote crash.</a>
1.294 david 1023: <li><a href="errata30.html#fdalloc2">May 8, 2002:
1.208 millert 1024: A race condition exists that could defeat the kernel's
1025: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1026: <li><a href="errata30.html#sudo2">April 25, 2002:
1.205 millert 1027: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1028: <li><a href="errata30.html#sshafs">April 22, 2002:
1.205 millert 1029: A local user can gain super-user privileges due to a buffer
1030: overflow in sshd(8) if AFS has been configured on the system
1031: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1032: in the sshd_config file.</a>
1.294 david 1033: <li><a href="errata30.html#mail">April 11, 2002:
1.202 millert 1034: The mail(1) was interpreting tilde escapes even when invoked
1035: in non-interactive mode. As mail(1) is called as root from cron,
1036: this can lead to a local root compromise.</a>
1.294 david 1037: <li><a href="errata30.html#approval">March 19, 2002:
1.201 millert 1038: Under certain conditions, on systems using YP with netgroups in
1039: the password database, it is possible for the rexecd(8) and rshd(8)
1040: daemons to execute a shell from a password database entry for a
1041: different user. Similarly, atrun(8) may change to the wrong
1042: home directory when running jobs.</a>
1.294 david 1043: <li><a href="errata30.html#zlib">March 13, 2002:
1.200 millert 1044: A potential double free() exists in the zlib library;
1045: this is not exploitable on OpenBSD.
1046: The kernel also contains a copy of zlib; it is not
1047: currently known if the kernel zlib is exploitable.</a>
1.294 david 1048: <li><a href="errata30.html#openssh">March 8, 2002:
1.198 millert 1049: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1050: may allow a local user to gain super-user privileges.</a>
1.294 david 1051: <li><a href="errata30.html#ptrace">January 21, 2002:
1.192 jason 1052: A race condition between the ptrace(2) and execve(2) system calls
1053: allows an attacker to modify the memory contents of suid/sgid
1054: processes which could lead to compromise of the super-user account.</a>
1.294 david 1055: <li><a href="errata30.html#sudo">January 17, 2002:
1.191 millert 1056: There is a security hole in sudo(8) that can be exploited
1057: when the Postfix sendmail replacement is installed that may
1058: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1059: <li><a href="errata30.html#lpd">November 28, 2001:
1.189 millert 1060: An attacker can trick a machine running the lpd daemon into
1061: creating new files in the root directory from a machine with
1062: remote line printer access.</a>
1.294 david 1063: <li><a href="errata30.html#vi.recover">November 13, 2001:
1.188 millert 1064: The vi.recover script can be abused in such a way as
1065: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1066: <li><a href="errata30.html#pf">November 13, 2001:
1.190 mpech 1067: pf(4) was incapable of dealing with certain ipv6 icmp packets,
1068: resulting in a crash.</a>
1.294 david 1069: <li><a href="errata30.html#sshd">November 12, 2001:
1.190 mpech 1070: A security hole that may allow an attacker to partially authenticate
1071: if -- and only if -- the administrator has enabled KerberosV.</a>
1.187 deraadt 1072: </ul>
1073:
1074: <p>
1075: <li>
1.288 matthieu 1076: <a name="29"></a>
1.173 deraadt 1077:
1.294 david 1078: <h3><font color="#e00000">OpenBSD 2.9 Security Advisories</font></h3>
1.173 deraadt 1079: These are the OpenBSD 2.9 advisories -- all these problems are solved
1.294 david 1080: in <a href="anoncvs.html">OpenBSD current</a>. The
1081: <a href="stable.html">patch branch</a>. for 2.9 is no longer being maintained,
1.258 beck 1082: you should update your machine.
1083:
1.173 deraadt 1084:
1085: <p>
1086: <ul>
1.294 david 1087: <li><a href="errata29.html#resolver">June 25, 2002:
1.212 millert 1088: A potential buffer overflow in the DNS resolver has been found.</a>
1.294 david 1089: <li><a href="errata29.html#fdalloc2">May 8, 2002:
1.208 millert 1090: A race condition exists that could defeat the kernel's
1091: protection of fd slots 0-2 for setuid processes.</a>
1.294 david 1092: <li><a href="errata29.html#sudo2">April 25, 2002:
1.207 millert 1093: A bug in sudo may allow an attacker to corrupt the heap.</a>
1.294 david 1094: <li><a href="errata29.html#sshafs">April 22, 2002:
1.206 millert 1095: A local user can gain super-user privileges due to a buffer
1096: overflow in sshd(8) if AFS has been configured on the system
1097: or if KerberosTgtPassing or AFSTokenPassing has been enabled
1098: in the sshd_config file.</a>
1.294 david 1099: <li><a href="errata29.html#mail">April 11, 2002:
1.202 millert 1100: The mail(1) was interpreting tilde escapes even when invoked
1101: in non-interactive mode. As mail(1) is called as root from cron,
1102: this can lead to a local root compromise.</a>
1.294 david 1103: <li><a href="errata29.html#zlib">March 13, 2002:
1.200 millert 1104: A potential double free() exists in the zlib library;
1105: this is not exploitable on OpenBSD.
1106: The kernel also contains a copy of zlib; it is not
1107: currently known if the kernel zlib is exploitable.</a>
1.294 david 1108: <li><a href="errata29.html#openssh">March 8, 2002:
1.198 millert 1109: An off-by-one check in OpenSSH's channel forwarding code
1.199 jufi 1110: may allow a local user to gain super-user privileges.</a>
1.294 david 1111: <li><a href="errata29.html#ptrace">January 21, 2002:
1.198 millert 1112: A race condition between the ptrace(2) and execve(2) system calls
1113: allows an attacker to modify the memory contents of suid/sgid
1114: processes which could lead to compromise of the super-user account.</a>
1.294 david 1115: <li><a href="errata29.html#sudo">January 17, 2002:
1.191 millert 1116: There is a security hole in sudo(8) that can be exploited
1117: when the Postfix sendmail replacement is installed that may
1118: allow an attacker on the local host to gain root privileges.</a>
1.294 david 1119: <li><a href="errata29.html#lpd2">November 28, 2001:
1.189 millert 1120: An attacker can trick a machine running the lpd daemon into
1121: creating new files in the root directory from a machine with
1122: remote line printer access.</a>
1.294 david 1123: <li><a href="errata29.html#vi.recover">November 13, 2001:
1.190 mpech 1124: The vi.recover script can be abused in such a way as
1125: to cause arbitrary zero-length files to be removed.</a>
1.294 david 1126: <li><a href="errata29.html#uucp">September 11, 2001:
1.184 millert 1127: A security hole exists in uuxqt(8) that may allow an
1128: attacker to gain root privileges.</a>
1.294 david 1129: <li><a href="errata29.html#lpd">August 29, 2001:
1.183 millert 1130: A security hole exists in lpd(8) that may allow an
1131: attacker to gain root privileges if lpd is running.</a>
1.294 david 1132: <li><a href="errata29.html#sendmail2">August 21, 2001:
1.181 millert 1133: A security hole exists in sendmail(8) that may allow an
1134: attacker on the local host to gain root privileges.</a>
1.294 david 1135: <li><a href="errata29.html#nfs">July 30, 2001:
1.180 jason 1136: A kernel buffer overflow in the NFS code can be used to execute
1137: arbitrary code by users with mount privileges (only root by
1.181 millert 1138: default).</a>
1.294 david 1139: <li><a href="errata29.html#kernexec">June 15, 2001:
1.178 aaron 1140: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1141: <li><a href="errata29.html#sshcookie">June 12, 2001:
1.177 markus 1142: sshd(8) allows users to delete arbitrary files named "cookies"
1143: if X11 forwarding is enabled. X11 forwarding is disabled
1144: by default.</a>
1.294 david 1145: <li><a href="errata29.html#fts">May 30, 2001:
1.176 millert 1146: Programs using the fts routines can be tricked into changing
1147: into the wrong directory.</a>
1.294 david 1148: <li><a href="errata29.html#sendmail">May 29, 2001:
1.174 millert 1149: Sendmail signal handlers contain unsafe code,
1150: leading to numerous race conditions.</a>
1.173 deraadt 1151: </ul>
1152:
1153: <p>
1154: <li>
1.288 matthieu 1155: <a name="28"></a>
1.152 deraadt 1156:
1.294 david 1157: <h3><font color="#e00000">OpenBSD 2.8 Security Advisories</font></h3>
1.152 deraadt 1158: These are the OpenBSD 2.8 advisories -- all these problems are solved
1.294 david 1159: in <a href="anoncvs.html">OpenBSD current</a>. The
1160: <a href="stable.html">patch branch</a>. for 2.8 is no longer being maintained,
1.258 beck 1161: you should update your machine.
1162:
1.152 deraadt 1163:
1164: <p>
1165: <ul>
1.294 david 1166: <li><a href="errata28.html#uucp">September 11, 2001:
1.184 millert 1167: A security hole exists in uuxqt(8) that may allow an
1168: attacker to gain root privileges.</a>
1.294 david 1169: <li><a href="errata28.html#lpd">August 29, 2001:
1.183 millert 1170: A security hole exists in lpd(8) that may allow an
1171: attacker to gain root privileges if lpd is running.</a>
1.294 david 1172: <li><a href="errata28.html#sendmail2">August 21, 2001:
1.181 millert 1173: A security hole exists in sendmail(8) that may allow an
1174: attacker on the local host to gain root privileges.</a>
1.294 david 1175: <li><a href="errata28.html#kernexec">June 15, 2001:
1.178 aaron 1176: A race condition in the kernel can lead to local root compromise.</a>
1.294 david 1177: <li><a href="errata28.html#fts">May 30, 2001:
1.176 millert 1178: Programs using the fts routines can be tricked into changing
1179: into the wrong directory.</a>
1.294 david 1180: <li><a href="errata28.html#sendmail">May 29, 2001:
1.175 millert 1181: Sendmail signal handlers contain unsafe code,
1182: leading to numerous race conditions.</a>
1.294 david 1183: <li><a href="errata28.html#ipf_frag">Apr 23, 2001:
1.231 mickey 1184: IPF contains a serious bug with its handling of fragment caching.</a>
1.294 david 1185: <li><a href="errata28.html#glob_limit">Apr 23, 2001:
1.172 ericj 1186: ftpd(8) contains a potential DoS relating to glob(3).</a>
1.294 david 1187: <li><a href="errata28.html#glob">Apr 10, 2001:
1.170 ericj 1188: The glob(3) library call contains multiple buffer overflows.</a>
1.294 david 1189: <li><a href="errata28.html#readline">Mar 18, 2001:
1.169 millert 1190: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1191: <li><a href="errata28.html#ipsec_ah">Mar 2, 2001:
1.167 ericj 1192: Insufficient checks in the IPSEC AH IPv4 option handling code can lead to a buffer overrun in the kernel.</a>
1.294 david 1193: <li><a href="errata28.html#userldt">Mar 2, 2001:
1.168 horacio 1194: The <b>USER_LDT</b> kernel option allows an attacker to gain access to privileged areas of kernel memory.</a>
1.294 david 1195: <li><a href="errata28.html#sudo">Feb 22, 2001:
1.171 millert 1196: a non-exploitable buffer overflow was fixed in sudo(8).</a>
1.294 david 1197: <li><a href="errata28.html#named">Jan 29, 2001:
1.163 jason 1198: merge named(8) with ISC BIND 4.9.8-REL, which fixes some buffer vulnerabilities.</a>
1.294 david 1199: <li><a href="errata28.html#rnd">Jan 22, 2001:
1.162 jason 1200: rnd(4) did not use all of its input when written to.</a>
1.294 david 1201: <li><a href="errata28.html#xlock">Dec 22, 2000:
1.159 ericj 1202: xlock(1)'s authentication was re-done to authenticate via a named pipe. (patch and new xlock binaries included).</a>
1.294 david 1203: <li><a href="errata28.html#procfs">Dec 18, 2000:
1.157 ericj 1204: Procfs contains numerous overflows. Procfs is not used by default in OpenBSD. (patch included).</a>
1.294 david 1205: <li><a href="errata28.html#kerberos2">Dec 10, 2000:
1.156 deraadt 1206: Another problem exists in KerberosIV libraries (patch included).</a>
1.294 david 1207: <li><a href="errata28.html#kerberos">Dec 7, 2000:
1.155 deraadt 1208: A set of problems in KerberosIV exist (patch included).</a>
1.294 david 1209: <li><a href="errata28.html#ftpd">Dec 4, 2000:
1.154 millert 1210: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.152 deraadt 1211: </ul>
1212:
1213: <p>
1214: <li>
1.288 matthieu 1215: <a name="27"></a>
1.124 deraadt 1216:
1.294 david 1217: <h3><font color="#e00000">OpenBSD 2.7 Security Advisories</font></h3>
1.124 deraadt 1218: These are the OpenBSD 2.7 advisories -- all these problems are solved
1.294 david 1219: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.124 deraadt 1220: OpenBSD 2.6 advisories listed below are fixed in OpenBSD 2.7.
1221:
1222: <p>
1223: <ul>
1.294 david 1224: <li><a href="errata27.html#readline">Mar 18, 2001:
1.169 millert 1225: The readline library creates history files with permissive modes based on the user's umask.</a>
1.294 david 1226: <li><a href="errata27.html#sudo">Feb 22, 2001:
1.169 millert 1227: a buffer overflow was fixed in sudo(8).</a>
1.294 david 1228: <li><a href="errata27.html#ftpd">Dec 4, 2000:
1.154 millert 1229: A single-byte buffer overflow exists in ftpd (patch included).</a>
1.294 david 1230: <li><a href="errata27.html#sshforwarding">Nov 10, 2000:
1.152 deraadt 1231: Hostile servers can force OpenSSH clients to do agent or X11 forwarding.
1232: (patch included)</a>
1.294 david 1233: <li><a href="errata27.html#xtrans">Oct 26, 2000:
1.151 matthieu 1234: X11 libraries have 2 potential overflows in xtrans code.
1235: (patch included)</a>
1.294 david 1236: <li><a href="errata27.html#httpd">Oct 18, 2000:
1.150 beck 1237: Apache mod_rewrite and mod_vhost_alias modules could expose files
1238: on the server in certain configurations if used.
1239: (patch included)</a>
1.294 david 1240: <li><a href="errata27.html#telnetd">Oct 10, 2000:
1.149 millert 1241: The telnet daemon does not strip out the TERMINFO, TERMINFO_DIRS,
1242: TERMPATH and TERMCAP environment variables as it should.
1243: (patch included)</a>
1.294 david 1244: <li><a href="errata27.html#format_strings">Oct 6, 2000:
1.148 millert 1245: There are printf-style format string bugs in several privileged
1246: programs. (patch included)</a>
1.294 david 1247: <li><a href="errata27.html#curses">Oct 6, 2000:
1.147 millert 1248: libcurses honored terminal descriptions in the $HOME/.terminfo
1249: directory as well as in the TERMCAP environment variable for
1250: setuid and setgid applications.
1.146 deraadt 1251: (patch included)</a>
1.294 david 1252: <li><a href="errata27.html#talkd">Oct 6, 2000:
1.146 deraadt 1253: A format string vulnerability exists in talkd(8).
1254: (patch included)</a>
1.294 david 1255: <li><a href="errata27.html#pw_error">Oct 3, 2000:
1.145 aaron 1256: A format string vulnerability exists in the pw_error() function of the
1257: libutil library, yielding localhost root through chpass(1).
1258: (patch included)</a>
1.294 david 1259: <li><a href="errata27.html#ipsec">Sep 18, 2000:
1.144 jason 1260: Bad ESP/AH packets could cause a crash under certain conditions.
1261: (patch included)</a>
1.294 david 1262: <li><a href="errata27.html#xlock">Aug 16, 2000:
1.141 deraadt 1263: A format string vulnerability (localhost root) exists in xlock(1).
1264: (patch included)</a>
1.294 david 1265: <li><a href="errata27.html#X11_libs">July 14, 2000:
1.139 deraadt 1266: Various bugs found in X11 libraries have various side effects, almost
1267: completely denial of service in OpenBSD.
1268: (patch included)</a>
1.294 david 1269: <li><a href="errata27.html#ftpd">July 5, 2000:
1.136 deraadt 1270: Just like pretty much all the other unix ftp daemons
1271: on the planet, ftpd had a remote root hole in it.
1272: Luckily, ftpd was not enabled by default.
1.137 deraadt 1273: The problem exists if anonymous ftp is enabled.
1.136 deraadt 1274: (patch included)</a>
1.294 david 1275: <li><a href="errata27.html#mopd">July 5, 2000:
1.136 deraadt 1276: Mopd, very rarely used, contained some buffer overflows.
1277: (patch included)</a>
1.294 david 1278: <li><a href="errata27.html#libedit">June 28, 2000:
1.135 deraadt 1279: libedit would check for a <b>.editrc</b> file in the current
1280: directory. Not known to be a real security issue, but a patch
1281: is available anyways.
1282: (patch included)</a>
1.294 david 1283: <li><a href="errata27.html#dhclient">June 24, 2000:
1.134 deraadt 1284: A serious bug in dhclient(8) could allow strings from a
1285: malicious dhcp server to be executed in the shell as root.
1286: (patch included)</a>
1.294 david 1287: <li><a href="errata27.html#isakmpd">June 9, 2000:
1.133 deraadt 1288: A serious bug in isakmpd(8) policy handling wherein
1289: policy verification could be completely bypassed in isakmpd.
1290: (patch included)</a>
1.294 david 1291: <li><a href="errata27.html#uselogin">June 6, 2000:
1.132 deraadt 1292: The non-default flag UseLogin in <b>/etc/sshd_config</b> is broken,
1293: should not be used, and results in security problems on
1294: other operating systems.</a>
1.294 david 1295: <li><a href="errata27.html#bridge">May 26, 2000:
1.129 deraadt 1296: The bridge(4) <i>learning</i> flag may be bypassed.
1.128 deraadt 1297: (patch included)</a>
1.294 david 1298: <li><a href="errata27.html#ipf">May 25, 2000:
1.127 kjell 1299: Improper use of ipf <i>keep-state</i> rules can result
1300: in firewall rules being bypassed. (patch included)</a>
1301:
1.124 deraadt 1302: </ul>
1303:
1304: <p>
1305: <li>
1.288 matthieu 1306: <a name="26"></a>
1.119 deraadt 1307:
1.294 david 1308: <h3><font color="#e00000">OpenBSD 2.6 Security Advisories</font></h3>
1.119 deraadt 1309: These are the OpenBSD 2.6 advisories -- all these problems are solved
1.294 david 1310: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.119 deraadt 1311: OpenBSD 2.5 advisories listed below are fixed in OpenBSD 2.6.
1312:
1313: <p>
1314: <ul>
1.294 david 1315: <li><a href="errata26.html#semconfig">May 26, 2000:
1.130 deraadt 1316: SYSV semaphore support contained an undocumented system call
1.131 deraadt 1317: which could wedge semaphore-using processes from exiting. (patch included)</a>
1.294 david 1318: <li><a href="errata26.html#ipf">May 25, 2000:
1.127 kjell 1319: Improper use of ipf <i>keep-state</i> rules can result
1320: in firewall rules being bypassed. (patch included)</a>
1.294 david 1321: <li><a href="errata26.html#xlockmore">May 25, 2000:
1.125 deraadt 1322: xlockmore has a bug which a localhost attacker can use to gain
1323: access to the encrypted root password hash (which is normally
1.245 miod 1324: encoded using blowfish</a> (see
1.294 david 1325: <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=crypt&sektion=3">
1.125 deraadt 1326: crypt(3)</a>)
1.245 miod 1327: (patch included).
1.294 david 1328: <li><a href="errata26.html#procfs">Jan 20, 2000:
1.123 deraadt 1329: Systems running with procfs enabled and mounted are
1330: vulnerable to a very tricky exploit. procfs is not
1331: mounted by default.
1332: (patch included).</a>
1.294 david 1333: <li><a href="errata26.html#sendmail">Dec 4, 1999:
1.296 david 1334: Sendmail permitted any user to cause an aliases file wrap,
1.190 mpech 1335: thus exposing the system to a race where the aliases file
1336: did not exist.
1.119 deraadt 1337: (patch included).</a>
1.294 david 1338: <li><a href="errata26.html#poll">Dec 4, 1999:
1.190 mpech 1339: Various bugs in poll(2) may cause a kernel crash.</a>
1.294 david 1340: <li><a href="errata26.html#sslUSA">Dec 2, 1999:
1.120 deraadt 1341: A buffer overflow in the RSAREF code included in the
1342: USA version of libssl, is possibly exploitable in
1343: httpd, ssh, or isakmpd, if SSL/RSA features are enabled.
1.124 deraadt 1344: (patch included).<br></a>
1345: <strong>Update:</strong> Turns out that this was not exploitable
1346: in any of the software included in OpenBSD 2.6.
1.294 david 1347: <li><a href="errata26.html#ifmedia">Nov 9, 1999:
1.190 mpech 1348: Any user could change interface media configurations, resulting in
1349: a localhost denial of service attack.
1.121 deraadt 1350: (patch included).</a>
1.119 deraadt 1351: </ul>
1352:
1353: <p>
1354: <li>
1.288 matthieu 1355: <a name="25"></a>
1.106 deraadt 1356:
1.294 david 1357: <h3><font color="#e00000">OpenBSD 2.5 Security Advisories</font></h3>
1.93 deraadt 1358: These are the OpenBSD 2.5 advisories -- all these problems are solved
1.294 david 1359: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.93 deraadt 1360: OpenBSD 2.4 advisories listed below are fixed in OpenBSD 2.5.
1361:
1.96 deraadt 1362: <p>
1.104 deraadt 1363: <ul>
1.294 david 1364: <li><a href="errata25.html#cron">Aug 30, 1999:
1.103 deraadt 1365: In cron(8), make sure argv[] is NULL terminated in the
1366: fake popen() and run sendmail as the user, not as root.
1367: (patch included).</a>
1.294 david 1368: <li><a href="errata25.html#miscfs">Aug 12, 1999: The procfs and fdescfs
1.101 deraadt 1369: filesystems had an overrun in their handling of uio_offset
1370: in their readdir() routines. (These filesystems are not
1371: enabled by default). (patch included).</a>
1.294 david 1372: <li><a href="errata25.html#profil">Aug 9, 1999: Stop profiling (see profil(2))
1.100 deraadt 1373: when we execve() a new process. (patch included).</a>
1.294 david 1374: <li><a href="errata25.html#ipsec_in_use">Aug 6, 1999: Packets that should have
1.98 deraadt 1375: been handled by IPsec may be transmitted as cleartext.
1376: PF_KEY SA expirations may leak kernel resources.
1377: (patch included).</a>
1.294 david 1378: <li><a href="errata25.html#rc">Aug 5, 1999: In /etc/rc, use mktemp(1) for
1.97 deraadt 1379: motd re-writing and change the find(1) to use -execdir
1380: (patch included).</a>
1.294 david 1381: <li><a href="errata25.html#chflags">Jul 30, 1999: Do not permit regular
1.95 deraadt 1382: users to chflags(2) or fchflags(2) on character or block devices
1383: which they may currently be the owner of (patch included).</a>
1.294 david 1384: <li><a href="errata25.html#nroff">Jul 27, 1999: Cause groff(1) to be invoked
1.95 deraadt 1385: with the -S flag, when called by nroff(1) (patch included).</a>
1.93 deraadt 1386: </ul>
1387:
1.106 deraadt 1388: <p>
1389: <li>
1.288 matthieu 1390: <a name="24"></a>
1.235 miod 1391:
1.294 david 1392: <h3><font color="#e00000">OpenBSD 2.4 Security Advisories</font></h3>
1.75 deraadt 1393: These are the OpenBSD 2.4 advisories -- all these problems are solved
1.294 david 1394: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.75 deraadt 1395: OpenBSD 2.3 advisories listed below are fixed in OpenBSD 2.4.
1396:
1.96 deraadt 1397: <p>
1.75 deraadt 1398: <ul>
1.294 david 1399: <li><a href="errata24.html#poll">Mar 22, 1999: The nfds argument for poll(2) needs
1.91 deraadt 1400: to be constrained, to avoid kvm starvation (patch included).</a>
1.294 david 1401: <li><a href="errata24.html#tss">Mar 21, 1999: A change in TSS handling stops
1.91 deraadt 1402: another kernel crash case caused by the <strong>crashme</strong>
1403: program (patch included).</a>
1.294 david 1404: <li><a href="errata24.html#nlink">Feb 25, 1999: An unbounded increment on the
1.90 deraadt 1405: nlink value in FFS and EXT2FS filesystems can cause a system crash.
1.89 deraadt 1406: (patch included).</a>
1.294 david 1407: <li><a href="errata24.html#ping">Feb 23, 1999: Yet another buffer overflow
1.88 deraadt 1408: existed in ping(8). (patch included).</a>
1.294 david 1409: <li><a href="errata24.html#ipqrace">Feb 19, 1999: ipintr() had a race in use of
1.87 deraadt 1410: the ipq, which could permit an attacker to cause a crash.
1411: (patch included).</a>
1.294 david 1412: <li><a href="errata24.html#accept">Feb 17, 1999: A race condition in the
1.86 deraadt 1413: kernel between accept(2) and select(2) could permit an attacker
1414: to hang sockets from remote.
1415: (patch included).</a>
1.294 david 1416: <li><a href="errata24.html#maxqueue">Feb 17, 1999: IP fragment assembly can
1.85 deraadt 1417: bog the machine excessively and cause problems.
1418: (patch included).</a>
1.294 david 1419: <li><a href="errata24.html#trctrap">Feb 12, 1999: i386 T_TRCTRAP handling and
1.84 deraadt 1420: DDB interacted to possibly cause a crash.
1421: (patch included).</a>
1.294 david 1422: <li><a href="errata24.html#rst">Feb 11, 1999: TCP/IP RST handling was sloppy.
1.83 deraadt 1423: (patch included).</a>
1.294 david 1424: <li><a href="errata24.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1425: problem in bootpd(8). (patch included).</a>
1.294 david 1426: <li><a href="errata24.html#termcap">Nov 19, 1998: There is a possibly locally
1.82 deraadt 1427: exploitable problem relating to environment variables in termcap
1428: and curses. (patch included).</a>
1.294 david 1429: <li><a href="errata24.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1430: bug in the TCP decoding kernel. (patch included).</a>
1.75 deraadt 1431: </ul>
1432:
1.106 deraadt 1433: <p>
1434: <li>
1.288 matthieu 1435: <a name="23"></a>
1.235 miod 1436:
1.294 david 1437: <h3><font color="#e00000">OpenBSD 2.3 Security Advisories</font></h3>
1.73 deraadt 1438: These are the OpenBSD 2.3 advisories -- all these problems are solved
1.294 david 1439: in <a href="anoncvs.html">OpenBSD current</a>. Obviously, all the
1.73 deraadt 1440: OpenBSD 2.2 advisories listed below are fixed in OpenBSD 2.3.
1.53 matthieu 1441:
1.96 deraadt 1442: <p>
1.53 matthieu 1443: <ul>
1.294 david 1444: <li><a href="errata23.html#bootpd">Nov 27, 1998: There is a remotely exploitable
1.81 deraadt 1445: problem in bootpd(8). (patch included).</a>
1.294 david 1446: <li><a href="errata23.html#tcpfix">Nov 13, 1998: There is a remote machine lockup
1.78 deraadt 1447: bug in the TCP decoding kernel. (patch included).</a>
1.294 david 1448: <li><a href="errata23.html#resolver">August 31, 1998: A benign looking resolver
1.190 mpech 1449: buffer overflow bug was re-introduced accidentally (patches included).</a>
1.294 david 1450: <li><a href="errata23.html#chpass">Aug 2, 1998:
1.190 mpech 1451: chpass(1) has a file descriptor leak which allows an
1452: attacker to modify /etc/master.passwd.</a>
1.294 david 1453: <li><a href="errata23.html#inetd">July 15, 1998: Inetd had a file descriptor leak.</a>
1454: <li><a href="errata23.html#fdalloc">Jul 2, 1998: setuid and setgid processes
1.72 deraadt 1455: should not be executed with fd slots 0, 1, or 2 free.
1456: (patch included).</a>
1.294 david 1457: <li><a href="errata23.html#xlib">June 6, 1998: Further problems with the X
1.71 deraadt 1458: libraries (patches included).</a>
1.294 david 1459: <li><a href="errata23.html#kill">May 17, 1998: kill(2) of setuid/setgid target
1.66 deraadt 1460: processes too permissive (4th revision patch included).</a>
1.294 david 1461: <li><a href="errata23.html#immutable">May 11, 1998: mmap() permits partial bypassing
1.60 deraadt 1462: of immutable and append-only file flags. (patch included).</a>
1.294 david 1463: <li><a href="errata23.html#ipsec">May 5, 1998: Incorrect handling of IPSEC packets
1.190 mpech 1464: if IPSEC is enabled (patch included).</a>
1.294 david 1465: <li><a href="errata23.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm and Xaw
1.58 deraadt 1466: (CERT advisory VB-98.04) (patch included).</a>
1.53 matthieu 1467: </ul>
1.9 deraadt 1468:
1.106 deraadt 1469: <p>
1470: <li>
1.288 matthieu 1471: <a name="22"></a>
1.235 miod 1472:
1.294 david 1473: <h3><font color="#e00000">OpenBSD 2.2 Security Advisories</font></h3>
1.45 deraadt 1474: These are the OpenBSD 2.2 advisories. All these problems are solved
1.294 david 1475: in <a href="23.html">OpenBSD 2.3</a>. Some of these problems
1.45 deraadt 1476: still exist in other operating systems. (The supplied patches are for
1477: OpenBSD 2.2; they may or may not work on OpenBSD 2.1).
1.9 deraadt 1478:
1.96 deraadt 1479: <p>
1.9 deraadt 1480: <ul>
1.294 david 1481: <li><a href="errata22.html#ipsec">May 5, 1998: Incorrect handling of IPSEC
1.72 deraadt 1482: packets if IPSEC is enabled (patch included).</a>
1.294 david 1483: <li><a href="errata22.html#xterm-xaw">May 1, 1998: Buffer overflow in xterm
1.72 deraadt 1484: and Xaw (CERT advisory VB-98.04) (patch included).</a>
1.294 david 1485: <li><a href="errata22.html#uucpd">Apr 22, 1998: Buffer overflow in uucpd
1.72 deraadt 1486: (patch included).</a>
1.294 david 1487: <li><a href="errata22.html#rmjob">Apr 22, 1998: Buffer mismanagement in lprm
1.72 deraadt 1488: (patch included).</a>
1.294 david 1489: <li><a href="errata22.html#ping">Mar 31, 1998: Overflow in ping -R (patch included).</a>
1490: <li><a href="errata22.html#named">Mar 30, 1998: Overflow in named fake-iquery
1.59 deraadt 1491: (patch included).</a>
1.294 david 1492: <li><a href="errata22.html#mountd">Mar 2, 1998: Accidental NFS filesystem
1.72 deraadt 1493: export (patch included).</a>
1.112 philen 1494: <li><a href="advisories/mmap.txt">Feb 26, 1998: Read-write mmap() flaw.</a>
1.294 david 1495: Revision 3 of the patch is available <a href="errata22.html#mmap">here</a>
1.112 philen 1496: <li><a href="advisories/sourceroute.txt">Feb 19, 1998: Sourcerouted Packet
1.59 deraadt 1497: Acceptance.</a>
1.294 david 1498: A patch is available <a href="errata22.html#sourceroute">here</a>.
1499: <li><a href="errata22.html#ruserok">Feb 13, 1998: Setuid coredump & Ruserok()
1.72 deraadt 1500: flaw (patch included).</a>
1.294 david 1501: <li><a href="errata22.html#ldso">Feb 9, 1998: MIPS ld.so flaw (patch included).</a>
1.1 deraadt 1502: </ul>
1503:
1.106 deraadt 1504: <p>
1505: <li>
1.288 matthieu 1506: <a name="21"></a>
1.235 miod 1507:
1.294 david 1508: <h3><font color="#e00000">OpenBSD 2.1 Security Advisories</font></h3>
1.52 deraadt 1509: These are the OpenBSD 2.1 advisories. All these problems are solved
1.294 david 1510: in <a href="22.html">OpenBSD 2.2</a>. Some of these problems still
1.52 deraadt 1511: exist in other operating systems. (If you are running OpenBSD 2.1, we
1512: would strongly recommend an upgrade to the newest release, as this
1513: patch list only attempts at fixing the most important security
1514: problems. In particular, OpenBSD 2.2 fixes numerous localhost
1515: security problems. Many of those problems were solved in ways which
1516: make it hard for us to provide patches).
1517:
1.96 deraadt 1518: <p>
1.52 deraadt 1519: <ul>
1.112 philen 1520: <li><a href="advisories/signals.txt">Sep 15, 1997: Deviant Signals (patch included)</a>
1521: <li><a href="advisories/rfork.txt">Aug 2, 1997: Rfork() system call flaw
1.59 deraadt 1522: (patch included)</a>
1.112 philen 1523: <li><a href="advisories/procfs.txt">Jun 24, 1997: Procfs flaws (patch included)</a>
1.52 deraadt 1524: </ul>
1.51 deraadt 1525:
1.106 deraadt 1526: <p>
1527: <li>
1.288 matthieu 1528: <a name="20"></a>
1.235 miod 1529:
1.294 david 1530: <h3><font color="#e00000">OpenBSD 2.0 Security Advisories</font></h3>
1.99 deraadt 1531: These are the OpenBSD 2.0 advisories. All these problems are solved
1.294 david 1532: in <a href="21.html">OpenBSD 2.1</a>. Some of these problems still
1.99 deraadt 1533: exist in other operating systems. (If you are running OpenBSD 2.0, we
1534: commend you for being there back in the old days!, but you're really
1535: missing out if you don't install a new version!)
1536:
1537: <p>
1538: <ul>
1.112 philen 1539: <li><a href="advisories/res_random.txt">April 22, 1997: Predictable IDs in the
1.99 deraadt 1540: resolver (patch included)</a>
1541: <li>Many others... if people can hunt them down, please let me know
1542: and we'll put them up here.
1543: </ul>
1.51 deraadt 1544: <p>
1.106 deraadt 1545:
1.288 matthieu 1546: <a name="watching"></a>
1.294 david 1547: <li><h3><font color="#e00000">Watching our Changes</font></h3><p>
1.106 deraadt 1548:
1.21 deraadt 1549: Since we take a proactive stance with security, we are continually
1550: finding and fixing new security problems. Not all of these problems
1.80 espie 1551: get widely reported because (as stated earlier) many of them are not
1.45 deraadt 1552: confirmed to be exploitable; many simple bugs we fix do turn out to
1553: have security consequences we could not predict. We do not have the
1554: time resources to make these changes available in the above format.<p>
1.21 deraadt 1555:
1556: Thus there are usually minor security fixes in the current source code
1557: beyond the previous major OpenBSD release. We make a limited
1.45 deraadt 1558: guarantee that these problems are of minimal impact and unproven
1.44 ian 1559: exploitability. If we discover that a problem definitely matters for
1.45 deraadt 1560: security, patches will show up here <strong>VERY</strong> quickly.<p>
1.21 deraadt 1561:
1.45 deraadt 1562: People who are really concerned with security can do a number of
1563: things:<p>
1.21 deraadt 1564:
1565: <ul>
1566: <li>If you understand security issues, watch our
1.294 david 1567: <a href="mail.html">source-changes mailing list</a> and keep an
1.23 deraadt 1568: eye out for things which appear security related. Since
1.21 deraadt 1569: exploitability is not proven for many of the fixes we make,
1570: do not expect the relevant commit message to say "SECURITY FIX!".
1571: If a problem is proven and serious, a patch will be available
1572: here very shortly after.
1.161 horacio 1573: <li>In addition to source changes, you can watch our <a href="mail.html">
1.160 ericj 1574: security-announce mailing list</a> which will notify you for every
1.186 ian 1575: security related item that the OpenBSD team deems as a possible threat,
1.160 ericj 1576: and instruct you on how to patch the problem.
1.21 deraadt 1577: <li>Track our current source code tree, and teach yourself how to do a
1.29 deraadt 1578: complete system build from time to time (read /usr/src/Makefile
1579: carefully). Users can make the assumption that the current
1580: source tree always has stronger security than the previous release.
1.45 deraadt 1581: However, building your own system from source code is not trivial;
1.265 miod 1582: it is nearly 600MB of source code, and problems do occur as we
1.45 deraadt 1583: transition between major releases.
1.115 ericj 1584: <li>Install a binary snapshot for your
1.80 espie 1585: architecture, which are made available fairly often. For
1.29 deraadt 1586: instance, an i386 snapshot is typically made available weekly.
1.21 deraadt 1587: </ul>
1588:
1.9 deraadt 1589: <p>
1.288 matthieu 1590: <a name="reporting"></a>
1.294 david 1591: <li><h3><font color="#e00000">Reporting problems</font></h3><p>
1.3 deraadt 1592:
1.5 deraadt 1593: <p> If you find a new security problem, you can mail it to
1.294 david 1594: <a href="mailto:deraadt@openbsd.org">deraadt@openbsd.org</a>.
1.7 deraadt 1595: <br>
1.5 deraadt 1596: If you wish to PGP encode it (but please only do so if privacy is very
1.112 philen 1597: urgent, since it is inconvenient) use this <a href="advisories/pgpkey.txt">pgp key</a>.
1.5 deraadt 1598:
1.107 deraadt 1599: <p>
1.288 matthieu 1600: <a name="papers"></a>
1.294 david 1601: <li><h3><font color="#e00000">Further Reading</font></h3><p>
1.107 deraadt 1602:
1603: A number of papers have been written by OpenBSD team members, about security
1604: related changes they have done in OpenBSD. The postscript versions of these
1.108 deraadt 1605: documents are available as follows.<p>
1.107 deraadt 1606:
1607: <ul>
1.113 deraadt 1608: <li>A Future-Adaptable Password Scheme.<br>
1.294 david 1609: <a href="events.html#usenix99">Usenix 1999</a>,
1610: by <a href="mailto:provos@openbsd.org">Niels Provos</a>,
1611: <a href="mailto:dm@openbsd.org">David Mazieres</a>.<br>
1612: <a href="papers/bcrypt-paper.ps">paper</a> and
1613: <a href="papers/bcrypt-slides.ps">slides</a>.
1.113 deraadt 1614: <p>
1615: <li>Cryptography in OpenBSD: An Overview.<br>
1.294 david 1616: <a href="events.html#usenix99">Usenix 1999</a>,
1617: by <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>,
1618: <a href="mailto:niklas@openbsd.org">Niklas Hallqvist</a>,
1619: <a href="mailto:art@openbsd.org">Artur Grabowski</a>,
1620: <a href="mailto:angelos@openbsd.org">Angelos D. Keromytis</a>,
1621: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1622: <a href="papers/crypt-paper.ps">paper</a> and
1623: <a href="papers/crypt-slides.ps">slides</a>.
1.113 deraadt 1624: <p>
1625: <li>strlcpy and strlcat -- consistent, safe, string copy and concatenation.<br>
1.294 david 1626: <a href="events.html#usenix99">Usenix 1999</a>,
1627: by <a href="mailto:millert@openbsd.org">Todd C. Miller</a>,
1628: <a href="mailto:deraadt@openbsd.org">Theo de Raadt</a>.<br>
1629: <a href="papers/strlcpy-paper.ps">paper</a> and
1630: <a href="papers/strlcpy-slides.ps">slides</a>.
1.113 deraadt 1631: <p>
1.118 deraadt 1632: <li>Dealing with Public Ethernet Jacks-Switches, Gateways, and Authentication.<br>
1.294 david 1633: <a href="events.html#lisa99">LISA 1999</a>,
1634: by <a href="mailto:beck@openbsd.org">Bob Beck</a>.<br>
1635: <a href="papers/authgw-paper.ps">paper</a> and
1636: <a href="papers/authgw-slides.ps">slides</a>.
1.118 deraadt 1637: <p>
1.153 jufi 1638: <li>Encrypting Virtual Memory<br>
1.294 david 1639: <a href="events.html#sec2000">Usenix Security 2000</a>,
1640: <a href="mailto:provos@openbsd.org">Niels Provos</a>.<br>
1641: <a href="papers/swapencrypt.ps">paper</a> and
1642: <a href="papers/swapencrypt-slides.ps">slides</a>.
1.142 deraadt 1643: <p>
1.107 deraadt 1644: </ul>
1.294 david 1645: </ul>
1.106 deraadt 1646:
1.2 deraadt 1647: <hr>
1.294 david 1648: <a href="index.html"><img height=24 width=24 src="back.gif" border=0 alt="OpenBSD"></a>
1649: <a href="mailto:www@openbsd.org">www@openbsd.org</a>
1.24 deraadt 1650: <br>
1.361 ! brad 1651: <small>$OpenBSD: security.html,v 1.360 2008/04/15 11:01:18 tobias Exp $</small>
1.1 deraadt 1652:
1.24 deraadt 1653: </body>
1654: </html>
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