<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="201405-16"> <title>Mono: Denial of Service</title> <synopsis>A hash collision vulnerability in Mono allows remote attackers to cause a Denial of Service condition. </synopsis> <product type="ebuild">mono</product> <announced>2014-05-18</announced> <revised count="1">2014-05-18</revised> <bug>433768</bug> <access>remote</access> <affected> <package name="dev-lang/mono" auto="yes" arch="*"> <unaffected range="ge">2.10.9-r2</unaffected> <vulnerable range="lt">2.10.9-r2</vulnerable> </package> </affected> <background> <p>Mono is an open source implementation of Microsoft’s .NET Framework.</p> </background> <description> <p>Mono does not properly randomize hash functions for form posts to protect against hash collision attacks. </p> </description> <impact type="normal"> <p>A remote attacker could send specially crafted parameters, possibly resulting in a Denial of Service condition. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All Mono users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=dev-lang/mono-2.10.9-r2" </code> </resolution> <references> <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3543">CVE-2012-3543</uri> </references> <metadata tag="requester" timestamp="2012-12-16T21:55:51Z">craig</metadata> <metadata tag="submitter" timestamp="2014-05-18T11:28:30Z">ackle</metadata> </glsa>