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<h2 id=OpenBSD>
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<i>Open</i><b>BSD</b></a>
5.4 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="errata31.html">3.1</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>,
<br>
<a href="errata36.html">3.6</a>,
<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>,
<br>
<a href="errata52.html">5.2</a>,
<a href="errata53.html">5.3</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>.
<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/5.4.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="p001_pflow">
<strong>001: RELIABILITY FIX: Nov 7, 2013</strong>
<i>All architectures</i><br>
A crash can happen on
<a href="https://man.openbsd.org/OpenBSD-5.4/pflow.4">pflow(4)</a>
interface destruction.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/001_pflow.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p002_sshgcm">
<strong>002: SECURITY FIX: Nov 7, 2013</strong>
<i>All architectures</i><br>
A memory corruption vulnerability exists in the post-authentication sshd process
when an AES-GCM cipher (aes128-gcm@openssh.com or aes256-gcm@openssh.com) is
selected during kex exchange.
Review the <a href="https://www.openssh.com/txt/gcmrekey.adv">gcmrekey advisory</a>
for a mitigation.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/002_sshgcm.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p003_vnode">
<strong>003: RELIABILITY FIX: Nov 11, 2013</strong>
<i>All architectures</i><br>
An unprivileged user may hang the system.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/003_vnode.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p004_nginx">
<strong>004: SECURITY FIX: Nov 21, 2013</strong>
<i>All architectures</i><br>
A problem exists in
<a href="https://man.openbsd.org/OpenBSD-5.4/nginx.8">nginx(8)</a>
which might allow an attacker to bypass security restrictions in certain
configurations by using a specially crafted request.
This issue was assigned CVE-2013-4547.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/004_nginx.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p005_sha512">
<strong>005: RELIABILITY FIX: Dec 19, 2013</strong>
<i>Strict alignment architectures</i><br>
In OpenSSL, use of the SHA384 SSL/TLS ciphers may result in a crash of
the application. The i386, amd64, vax and m68k platforms aren't
affected.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/005_sha512.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p006_libXfont">
<strong>006: SECURITY FIX: Jan 10, 2014</strong>
<i>All architectures</i><br>
A BDF font file containing a longer than expected string could overflow
a buffer on the stack in the X server.
This issue was assigned CVE-2013-6462.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/006_libXfont.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p007_openssl">
<strong>007: SECURITY FIX: April 8, 2014</strong>
<i>All architectures</i><br>
Missing bounds checking in OpenSSL's implementation of the TLS/DTLS
heartbeat extension (RFC6520) which can result in a leak of memory contents.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/007_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p008_openssl">
<strong>008: SECURITY FIX: April 12, 2014</strong>
<i>All architectures</i><br>
A use-after-free race condition in OpenSSL's read buffer may permit an attacker
to inject data from one connection into another.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/008_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p009_openssl">
<strong>009: RELIABILITY FIX: May 1, 2014</strong>
<i>All architectures</i><br>
An attacker can trigger generation of an SSL alert which could cause
a null pointer dereference.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/009_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p010_libXfont">
<strong>010: SECURITY FIX: May 24, 2014</strong>
<i>All architectures with X server</i><br>
X Font Service Protocol & Font metadata file handling issues in libXfont
<ul>
<li>CVE-2014-0209: integer overflow of allocations in font metadata file parsing
<li>CVE-2014-0210: unvalidated length fields when parsing xfs protocol replies
<li>CVE-2014-0211: integer overflows calculating memory needs for xfs replies
</ul>
Please see <a href="http://lists.x.org/archives/xorg-announce/2014-May/002431.html">the advisory</a> for more information.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/010_libXfont.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p011_sendmail">
<strong>011: SECURITY FIX: June 5, 2014</strong>
<i>All architectures</i><br>
Sendmail was not properly closing file descriptions before executing programs.
This could enable local users to interfere with an open SMTP connection.
This issue was assigned CVE-2014-3956.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/011_sendmail.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p012_openssl">
<strong>012: SECURITY FIX: June 6, 2014</strong>
<i>All architectures</i><br>
This patch contains a number of SSL library fixes.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/012_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p013_dhcp">
<strong>013: RELIABILITY FIX: July 30, 2014</strong>
<i>All architectures</i><br>
Packets with illegal DHCP options can lead to memory exhaustion of
<a href="https://man.openbsd.org/OpenBSD-5.4/dhclient.8">dhclient(8)</a>
and
<a href="https://man.openbsd.org/OpenBSD-5.4/dhcpd.8">dhcpd(8)</a>.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/013_dhcp.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p014_openssl">
<strong>014: SECURITY FIX: August 9, 2014</strong>
<i>All architectures</i><br>
This patch contains a number of SSL library fixes.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/014_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p015_nginx">
<strong>015: SECURITY FIX: October 1, 2014</strong>
<i>All architectures</i><br>
nginx can reuse cached SSL sessions in unrelated contexts, allowing virtual
host confusion attacks in some configurations.
This issue was assigned CVE-2014-3616.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/015_nginx.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p016_openssl">
<strong>016: RELIABILITY FIX: October 20, 2014</strong>
<i>All architectures</i><br>
Two remotely triggerable memory leaks in OpenSSL can lead to a denial of
service in server applications.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/016_openssl.patch">
A source code patch exists which remedies this problem.</a>
<p>
<li id="p017_kernexec">
<strong>017: RELIABILITY FIX: October 20, 2014</strong>
<i>All architectures</i><br>
Executable headers with an unaligned address will trigger a kernel panic.
<br>
<a href="https://ftp.openbsd.org/pub/OpenBSD/patches/5.4/common/017_kernexec.patch">
A source code patch exists which remedies this problem.</a>
<p>
</ul>
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