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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="201009-07">
<title>libxml2: Denial of Service</title>
<synopsis>
Multiple Denial of Services vulnerabilities were found in libxml2.
</synopsis>
<product type="ebuild">libxml2</product>
<announced>September 21, 2010</announced>
<revised>September 21, 2010: 01</revised>
<bug>280617</bug>
<access>remote</access>
<affected>
<package name="dev-libs/libxml2" auto="yes" arch="*">
<unaffected range="ge">2.7.3-r2</unaffected>
<vulnerable range="lt">2.7.3-r2</vulnerable>
</package>
</affected>
<background>
<p>
libxml2 is a library to manipulate XML files.
</p>
</background>
<description>
<p>
The following vulnerabilities were reported after a test with the
Codenomicon XML fuzzing framework:
</p>
<ul>
<li>
Two use-after-free vulnerabilities are possible when parsing a XML file
with Notation or Enumeration attribute types (CVE-2009-2416).
</li>
<li>
A stack consumption vulnerability can be triggered via a large depth of
element declarations in a DTD, related to a function recursion
(CVE-2009-2414).
</li>
</ul>
</description>
<impact type="normal">
<p>
A remote attacker could entice a user or automated system to open a
specially crafted XML document with an application using libxml2
resulting in a Denial of Service condition.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All libxml2 users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=dev-libs/libxml2-2.7.3-r2&quot;</code>
<p>
NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since August 30, 2009. It is likely that your system is
already no longer affected by this issue.
</p>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2414">CVE-2009-2414</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2416">CVE-2009-2416</uri>
</references>
<metadata tag="requester" timestamp="Mon, 31 Aug 2009 02:15:14 +0000">
a3li
</metadata>
<metadata tag="submitter" timestamp="Sun, 11 Apr 2010 13:13:48 +0000">
craig
</metadata>
<metadata tag="bugReady" timestamp="Sun, 30 May 2010 18:03:32 +0000">
vorlon
</metadata>
</glsa>