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gentoo-overlay/metadata/glsa/glsa-200407-03.xml

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<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200407-03">
<title>Apache 2: Remote denial of service attack</title>
<synopsis>
A bug in Apache may allow a remote attacker to perform a Denial of Service
attack. With certain configurations this could lead to a heap based buffer
overflow.
</synopsis>
<product type="ebuild">Apache</product>
<announced>July 04, 2004</announced>
<revised>December 30, 2007: 02</revised>
<bug>55441</bug>
<access>remote</access>
<affected>
<package name="www-servers/apache" auto="yes" arch="*">
<unaffected range="ge">2.0.49-r4</unaffected>
<unaffected range="lt">2</unaffected>
<vulnerable range="le">2.0.49-r3</vulnerable>
</package>
</affected>
<background>
<p>
The Apache HTTP Server Project is an effort to develop and maintain an
open-source HTTP server for modern operating systems. The goal of this
project is to provide a secure, efficient and extensible server that
provides services in tune with the current HTTP standards.
</p>
</background>
<description>
<p>
A bug in the protocol.c file handling header lines will cause Apache to
allocate memory for header lines starting with TAB or SPACE.
</p>
</description>
<impact type="normal">
<p>
An attacker can exploit this vulnerability to perform a Denial of Service
attack by causing Apache to exhaust all memory. On 64 bit systems with more
than 4GB of virtual memory a possible integer signedness error could lead
to a buffer based overflow causing Apache to crash and under some
circumstances execute arbitrary code as the user running Apache, usually
"apache".
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version:
</p>
</workaround>
<resolution>
<p>
Apache 2 users should upgrade to the latest version of Apache:
</p>
<code>
# emerge sync
# emerge -pv ">=www-servers/apache-2.0.49-r4"
# emerge ">=www-servers/apache-2.0.49-r4"</code>
</resolution>
<references>
<uri link="http://www.guninski.com/httpd1.html">Georgi Guninski security advisory #70, 2004</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0493">CAN-2004-0493</uri>
</references>
<metadata tag="submitter">
jaervosz
</metadata>
</glsa>