glsa-201405-16.xml


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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="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>May 18, 2014</announced>
  <revised>May 18, 2014: 1</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 "&gt;=dev-lang/mono-2.10.9-r2"
    </code>
  </resolution>
  <references>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3543">CVE-2012-3543</uri>
  </references>
  <metadata tag="requester" timestamp="Sun, 16 Dec 2012 21:55:51 +0000">craig</metadata>
  <metadata tag="submitter" timestamp="Sun, 18 May 2014 11:28:30 +0000">ackle</metadata>
</glsa>