glsa-201309-20.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201309-20">
  <title>Dropbear: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in Dropbear, the worst of
    which could lead to arbitrary code execution.
  </synopsis>
  <product type="ebuild">dropbear</product>
  <announced>2013-09-26</announced>
  <revised count="1">2013-09-26</revised>
  <bug>328409</bug>
  <bug>405607</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/dropbear" auto="yes" arch="*">
      <unaffected range="ge">2012.55</unaffected>
      <vulnerable range="lt">2012.55</vulnerable>
    </package>
  </affected>
  <background>
    <p>Dropbear is an SSH server and client designed with a small memory
      footprint.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in Dropbear. Please review
      the CVE identifier and Gentoo bug referenced below for details.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could send a specially crafted request to trigger a
      use-after-free condition, possibly resulting in arbitrary code execution
      or a Denial of Service condition. Additionally, the bundled version of
      libtommath has an error in its prime number generation, which could
      result in the generation of weak keys.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Dropbear users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-misc/dropbear-2012.55"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0920">CVE-2012-0920</uri>
    <uri link="https://bugs.gentoo.org/show_bug.cgi?id=328383">libtommath
      Gentoo bug
    </uri>
  </references>
  <metadata tag="requester" timestamp="2012-03-03T20:26:25Z">
    underling
  </metadata>
  <metadata tag="submitter" timestamp="2013-09-26T23:47:21Z">
    creffett
  </metadata>
</glsa>