metadata/glsa/glsa-200702-03.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">

<glsa id="200702-03">
  <title>Snort: Denial of Service</title>
  <synopsis>
    Snort contains a vulnerability in the rule matching algorithm that could
    result in a Denial of Service.
  </synopsis>
  <product type="ebuild">snort</product>
  <announced>February 13, 2007</announced>
  <revised>February 13, 2007: 01</revised>
  <bug>161632</bug>
  <access>remote</access>
  <affected>
    <package name="net-analyzer/snort" auto="yes" arch="*">
      <unaffected range="ge">2.6.1.2</unaffected>
      <vulnerable range="lt">2.6.1.2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Snort is a widely deployed intrusion detection program.
    </p>
  </background>
  <description>
    <p>
    Randy Smith, Christian Estan and Somesh Jha discovered that the rule
    matching algorithm of Snort can be exploited in a way known as a
    "backtracking attack" to perform numerous time-consuming operations.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could send specially crafted network packets, which
    would result in the cessation of the detections and the consumption of
    the CPU resources.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Snort users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-analyzer/snort-2.6.1.2&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6931">CVE-2006-6931</uri>
  </references>
  <metadata tag="requester" timestamp="Sat, 10 Feb 2007 19:01:49 +0000">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="Mon, 12 Feb 2007 22:41:30 +0000">
    falco
  </metadata>
  <metadata tag="submitter" timestamp="Mon, 12 Feb 2007 23:29:42 +0000">
    falco
  </metadata>
</glsa>