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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200907-02">
<title>ModSecurity: Denial of Service</title>
<synopsis>
Two vulnerabilities in ModSecurity might lead to a Denial of Service.
</synopsis>
<product type="ebuild">mod_security</product>
<announced>July 02, 2009</announced>
<revised>July 02, 2009: 01</revised>
<bug>262302</bug>
<access>remote</access>
<affected>
<package name="www-apache/mod_security" auto="yes" arch="*">
<unaffected range="ge">2.5.9</unaffected>
<vulnerable range="lt">2.5.9</vulnerable>
</package>
</affected>
<background>
<p>
ModSecurity is a popular web application firewall for the Apache HTTP
server.
</p>
</background>
<description>
<p>
Multiple vulnerabilities were discovered in ModSecurity:
</p>
<ul>
<li>Juan Galiana Lara of ISecAuditors discovered a NULL pointer
dereference when processing multipart requests without a part header
name (CVE-2009-1902).</li>
<li>Steve Grubb of Red Hat reported that the
"PDF XSS protection" feature does not properly handle HTTP requests to
a PDF file that do not use the GET method (CVE-2009-1903).</li>
</ul>
</description>
<impact type="normal">
<p>
A remote attacker might send requests containing specially crafted
multipart data or send certain requests to access a PDF file, possibly
resulting in a Denial of Service (crash) of the Apache HTTP daemon.
NOTE: The PDF XSS protection is not enabled by default.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All ModSecurity users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=www-apache/mod_security-2.5.9&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1902">CVE-2009-1902</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1903">CVE-2009-1903</uri>
</references>
<metadata tag="requester" timestamp="Fri, 12 Jun 2009 22:17:27 +0000">
craig
</metadata>
<metadata tag="submitter" timestamp="Sat, 27 Jun 2009 20:29:14 +0000">
a3li
</metadata>
<metadata tag="bugReady" timestamp="Thu, 02 Jul 2009 11:54:37 +0000">
a3li
</metadata>
</glsa>