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<h2 id=OpenBSD>
<a href="index.html">
<i>Open</i><b>BSD</b></a>
3.1 Errata
</h2>
<hr>

For errata on a certain release, click below:<br>
<a href="errata20.html">2.0</a>,
<a href="errata21.html">2.1</a>,
<a href="errata22.html">2.2</a>,
<a href="errata23.html">2.3</a>,
<a href="errata24.html">2.4</a>,
<a href="errata25.html">2.5</a>,
<a href="errata26.html">2.6</a>,
<a href="errata27.html">2.7</a>,
<a href="errata28.html">2.8</a>,
<a href="errata29.html">2.9</a>,
<a href="errata30.html">3.0</a>,
<a href="errata32.html">3.2</a>,
<a href="errata33.html">3.3</a>,
<a href="errata34.html">3.4</a>,
<a href="errata35.html">3.5</a>,
<a href="errata36.html">3.6</a>,
<br>
<a href="errata37.html">3.7</a>,
<a href="errata38.html">3.8</a>,
<a href="errata39.html">3.9</a>,
<a href="errata40.html">4.0</a>,
<a href="errata41.html">4.1</a>,
<a href="errata42.html">4.2</a>,
<a href="errata43.html">4.3</a>,
<a href="errata44.html">4.4</a>,
<a href="errata45.html">4.5</a>,
<a href="errata46.html">4.6</a>,
<a href="errata47.html">4.7</a>,
<a href="errata48.html">4.8</a>,
<a href="errata49.html">4.9</a>,
<a href="errata50.html">5.0</a>,
<a href="errata51.html">5.1</a>,
<a href="errata52.html">5.2</a>,
<br>
<a href="errata53.html">5.3</a>,
<a href="errata54.html">5.4</a>,
<a href="errata55.html">5.5</a>,
<a href="errata56.html">5.6</a>,
<a href="errata57.html">5.7</a>,
<a href="errata58.html">5.8</a>,
<a href="errata59.html">5.9</a>,
<a href="errata60.html">6.0</a>,
<a href="errata61.html">6.1</a>,
<a href="errata62.html">6.2</a>,
<a href="errata63.html">6.3</a>,
<a href="errata64.html">6.4</a>,
<a href="errata65.html">6.5</a>,
<a href="errata66.html">6.6</a>,
<a href="errata67.html">6.7</a>,
<a href="errata68.html">6.8</a>,
<br>
<a href="errata69.html">6.9</a>,
<a href="errata70.html">7.0</a>,
<a href="errata71.html">7.1</a>,
<a href="errata72.html">7.2</a>,
<a href="errata73.html">7.3</a>,
<a href="errata74.html">7.4</a>,
<a href="errata75.html">7.5</a>,
<a href="errata76.html">7.6</a>,
<a href="errata77.html">7.7</a>.
<hr>

<p>
Patches for the OpenBSD base system are distributed as unified diffs.
Each patch contains usage instructions.
All the following patches are also available in one
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1.tar.gz">tar.gz file</a>
for convenience.

<p>
Patches for supported releases are also incorporated into the
<a href="stable.html">-stable branch</a>.

<hr>

<ul>

<li id="sshafs">
<strong>001: SECURITY FIX: April 22, 2002</strong>
&nbsp; <i>All architectures</i><br>
A local user can gain super-user privileges due to a buffer overflow
in <a href="https://man.openbsd.org/OpenBSD-3.1/sshd.8">sshd(8)</a>
if AFS has been configured on the system or if
KerberosTgtPassing or AFSTokenPassing has been enabled
in the sshd_config file.  Ticket and token passing is not enabled
by default.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/001_sshafs.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="sudo">
<strong>002: SECURITY FIX: April 25, 2002</strong>
&nbsp; <i>All architectures</i><br>
A bug in <a href="https://man.openbsd.org/OpenBSD-3.1/sudo.8">sudo(8)</a> may allow an attacker to corrupt the heap by specifying a custom prompt.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/002_sudo.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="fdalloc2">
<strong>003: SECURITY FIX: May 8, 2002</strong>
&nbsp; <i>All architectures</i><br>
A race condition exists where an attacker could fill the file descriptor
table and defeat the kernel's protection of fd slots 0, 1, and 2 for a
setuid or setgid process.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/003_fdalloc2.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="sshbsdauth">
<strong>004: SECURITY FIX: May 22, 2002</strong>
&nbsp; <i>All architectures</i><br>
Under certain conditions, on systems using YP with netgroups in the
password database, it is possible that
<a href="https://man.openbsd.org/OpenBSD-3.1/sshd.8">sshd(8)</a>
does ACL checks for the requested user name but uses the password
database entry of a different user for authentication.  This means
that denied users might authenticate successfully while permitted
users could be locked out.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/004_sshbsdauth.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="httpd">
<strong>005: SECURITY FIX: June 19, 2002</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow can occur during the interpretation of chunked
encoding in the http daemon, leading to possible remote crash or exploit.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/005_httpd.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="sshd">
<strong>006: SECURITY FIX: June 24, 2002</strong>
&nbsp; <i>All architectures</i><br>
All versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation
error that can result in an integer overflow and privilege escalation.
This problem is fixed in <a href="https://www.openssh.com/openbsd.html">OpenSSH
3.4</a>, and a patch for the vulnerable releases is available as part of the
<a href="https://www.openssh.com/txt/preauth.adv">security advisory</a>.
<p>

<li id="resolver">
<strong>007: SECURITY FIX: June 25, 2002</strong>
&nbsp; <i>All architectures</i><br>
A potential buffer overflow in the DNS resolver has been found.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/007_resolver.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="modssl">
<strong>008: SECURITY FIX: June 26, 2002</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow can occur in the .htaccess parsing code in mod_ssl httpd
module, leading to possible remote crash or exploit.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/008_mod_ssl.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="ktrace">
<strong>009: SECURITY FIX: June 27, 2002</strong>
&nbsp; <i>All architectures</i><br>
The kernel would let any user <a href="https://man.openbsd.org/OpenBSD-3.1/ktrace.2">ktrace(2)</a> set[ug]id processes.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/009_ktrace.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="isakmpd">
<strong>010: RELIABILITY FIX: July 5, 2002</strong>
&nbsp; <i>All architectures</i><br>
Receiving IKE payloads out of sequence can cause
<a href="https://man.openbsd.org/OpenBSD-3.1/isakmpd.8">isakmpd(8)</a> to crash.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/010_isakmpd.patch">
A source code patch exists which remedies this problem.</a>
<br>
This is the second version of the patch.
<p>

<li id="pppd">
<strong>011: SECURITY FIX: July 29, 2002</strong>
&nbsp; <i>All architectures</i><br>
A race condition exists in the
<a href="https://man.openbsd.org/OpenBSD-3.1/pppd.8">pppd(8)</a>
daemon which may cause it to alter the file permissions of an arbitrary file.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/011_pppd.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="xdr">
<strong>012: SECURITY FIX: July 29, 2002</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow can occur in the
<a href="https://man.openbsd.org/OpenBSD-3.1/xdr_array.3">xdr_array(3)</a>
RPC code, leading to possible remote crash.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/012_xdr.patch">
A source code patch exists which remedies this problem.</a>
<br>
This is the second version of the patch.
<p>

<li id="ssl">
<strong>013: SECURITY FIX: July 30, 2002</strong>
&nbsp; <i>All architectures</i><br>
Several remote buffer overflows can occur in the SSL2 server and SSL3 client of the
<a href="https://man.openbsd.org/OpenBSD-3.1/ssl.8">ssl(8)</a>
library, as in the ASN.1 parser code in the
<a href="https://man.openbsd.org/OpenBSD-3.1/crypto.3">crypto(3)</a>
library, all of them being potentially remotely exploitable.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/013_ssl.patch">
A source code patch exists which remedies this problem.</a>
<br>
This is the second version of the patch.
<p>

<li id="scarg">
<strong>014: SECURITY FIX: August 11, 2002</strong>
&nbsp; <i>All architectures</i><br>
An insufficient boundary check in the
<a href="https://man.openbsd.org/OpenBSD-3.1/select.2">select(2)</a>
system call allows an attacker to overwrite kernel memory and execute arbitrary
code in kernel context.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/014_scarg.patch">
A source code patch exists which remedies this problem.</a>
For more details, see the <a href="advisories/select.txt">OpenBSD advisory</a>.
<p>

<li id="kerntime">
<strong>015: SECURITY FIX: October 2, 2002</strong>
&nbsp; <i>All architectures</i><br>
Incorrect argument checking in the
<a href="https://man.openbsd.org/OpenBSD-3.1/setitimer.2">setitimer(2)</a> system call may allow an attacker to write to kernel memory.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/015_kerntime.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="kadmin">
<strong>016: SECURITY FIX: October 21, 2002</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow can occur in the
<a href="https://man.openbsd.org/OpenBSD-3.1/kadmind.8">kadmind(8)</a>
daemon, leading to possible remote crash or exploit.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/016_kadmin.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="smrsh">
<strong>017: SECURITY FIX: November 6, 2002</strong>
&nbsp; <i>All architectures</i><br>
An attacker can bypass the restrictions imposed by sendmail's restricted shell,
<a href="https://man.openbsd.org/OpenBSD-3.1/smrsh.8">smrsh(8)</a>,
and execute arbitrary commands with the privileges of his own account.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/017_smrsh.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="kernresource">
<strong>018: SECURITY FIX: November 6, 2002</strong>
&nbsp; <i>All architectures</i><br>
Incorrect argument checking in the
<a href="https://man.openbsd.org/OpenBSD-3.1/getrlimit.2">getrlimit(2)</a>
system call may allow an attacker to crash the kernel.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/018_kernresource.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="named">
<strong>019: SECURITY FIX: November 14, 2002</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow in
<a href="https://man.openbsd.org/OpenBSD-3.1/named.8">named(8)</a>
could allow an attacker to execute code with the privileges of named.
On OpenBSD, named runs as a non-root user in a chrooted environment
which mitigates the effects of this bug.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/019_named.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="cvs">
<strong>020: SECURITY FIX: January 20, 2003</strong>
&nbsp; <i>All architectures</i><br>
A double free in
<a href="https://man.openbsd.org/OpenBSD-3.1/cvs.1">cvs(1)</a>
could allow an attacker to execute code with the privileges of the
user running cvs.  This is only an issue when the cvs command is
being run on a user's behalf as a different user.  This means that,
in most cases, the issue only exists for cvs configurations that use
the <em>pserver</em> client/server connection method.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/020_cvs.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="ssl2">
<strong>021: SECURITY FIX: February 23, 2003</strong>
&nbsp; <i>All architectures</i><br>
In
<a href="https://man.openbsd.org/OpenBSD-3.1/ssl.8">ssl(8)</a> an information leak can occur via timing by performing a MAC computation
even if incorrect block cipher padding has been found, this is a
countermeasure. Also, check for negative sizes in memory allocation routines.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/021_ssl.patch">
A source code patch exists which fixes these two issues</a>.
<p>

<li id="sendmail">
<strong>022: SECURITY FIX: March 3, 2003</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow in the envelope comments processing in
<a href="https://man.openbsd.org/OpenBSD-3.1/sendmail.8">sendmail(8)</a>
may allow an attacker to gain root privileges.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/022_sendmail.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="lprm">
<strong>023: SECURITY FIX: March 5, 2003</strong>
&nbsp; <i>All architectures</i><br>
A fix for an
<a href="https://man.openbsd.org/OpenBSD-3.1/lprm.1">lprm(1)</a>
bug made in 1996 contains an error that could lead to privilege escalation.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/023_lprm.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="blinding">
<strong>024: SECURITY FIX: March 18, 2003</strong>
&nbsp; <i>All architectures</i><br>
Various SSL and TLS operations in OpenSSL are vulnerable to timing attacks.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/024_blinding.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="kpr">
<strong>025: SECURITY FIX: March 19, 2003</strong>
&nbsp; <i>All architectures</i><br>
OpenSSL is vulnerable to an extension of the "Bleichenbacher" attack designed
by Czech researchers Klima, Pokorny and Rosa.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/025_kpr.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="kerberos">
<strong>026: SECURITY FIX: March 24, 2003</strong>
&nbsp; <i>All architectures</i><br>
The cryptographic weaknesses in the Kerberos v4 protocol can be exploited
on Kerberos v5 as well.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/026_kerberos.patch">
A source code patch exists which remedies this problem.</a>
<p>

<li id="sendmail2">
<strong>027: SECURITY FIX: March 31, 2003</strong>
&nbsp; <i>All architectures</i><br>
A buffer overflow in the address parsing in
<a href="https://man.openbsd.org/OpenBSD-3.1/sendmail.8">sendmail(8)</a>
may allow an attacker to gain root privileges.<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/027_sendmail.patch">
A source code patch exists which remedies this problem.</a>
<p>

</ul>

<hr>