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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="200406-16">
<title>Apache 1.3: Buffer overflow in mod_proxy</title>
<synopsis>
A bug in mod_proxy may allow a remote attacker to execute arbitrary code
when Apache is configured a certain way.
</synopsis>
<product type="ebuild">Apache</product>
<announced>June 21, 2004</announced>
<revised>December 30, 2007: 02</revised>
<bug>53544</bug>
<access>remote</access>
<affected>
<package name="www-servers/apache" auto="yes" arch="*">
<unaffected range="ge">1.3.31-r2</unaffected>
<vulnerable range="le">1.3.31-r1</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 proxy_util.c file may lead to a remote buffer overflow. To
trigger the vulnerability an attacker would have to get mod_proxy to
connect to a malicous server which returns an invalid (negative)
Content-Length.
</p>
</description>
<impact type="normal">
<p>
An attacker could cause a Denial of Service as the Apache child handling
the request, which will die and under some circumstances execute arbitrary
code as the user running Apache, usually &quot;apache&quot;.
</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 1.x users should upgrade to the latest version of Apache:
</p>
<code>
# emerge sync
# emerge -pv ">=www-servers/apache-1.3.31-r2"
# emerge ">=www-servers/apache-1.3.31-r2"</code>
</resolution>
<references>
<uri link="http://www.guninski.com/modproxy1.html">Georgi Guninski security advisory #69, 2004</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0492">CAN-2004-0492</uri>
</references>
<metadata tag="submitter">
jaervosz
</metadata>
</glsa>