<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="201203-04"> <title>libxml2: Denial of service</title> <synopsis>A hash collision vulnerability in libxml2 allows remote attackers to cause a Denial of Service condition. </synopsis> <product type="ebuild">libxml2</product> <announced>2012-03-06</announced> <revised count="1">2012-03-06</revised> <bug>405261</bug> <access>remote</access> <affected> <package name="dev-libs/libxml2" auto="yes" arch="*"> <unaffected range="ge">2.7.8-r5</unaffected> <vulnerable range="lt">2.7.8-r5</vulnerable> </package> </affected> <background> <p>libxml2 is the XML C parser and toolkit developed for the Gnome project.</p> </background> <description> <p>libxml2 does not properly randomize hash functions to protect against hash collision attacks. </p> </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 ">=dev-libs/libxml2-2.7.8-r5" </code> </resolution> <references> <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0841">CVE-2012-0841</uri> </references> <metadata timestamp="2012-03-04T20:55:53Z" tag="requester">ackle</metadata> <metadata timestamp="2012-03-06T01:04:40Z" tag="submitter">ackle</metadata> </glsa>