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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200608-23">
  <title>Heartbeat: Denial of Service</title>
  <synopsis>
    Heartbeat is vulnerable to a Denial of Service which can be triggered by a
    remote attacker without authentication.
  </synopsis>
  <product type="ebuild">heartbeat</product>
  <announced>2006-08-24</announced>
  <revised>2006-09-22: 02</revised>
  <bug>141894</bug>
  <access>remote</access>
  <affected>
    <package name="sys-cluster/heartbeat" auto="yes" arch="*">
      <unaffected range="ge">2.0.7</unaffected>
      <unaffected range="rge">1.2.5</unaffected>
      <vulnerable range="lt">2.0.7</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Heartbeat is a component of the High-Availability Linux project. It is
    used to perform death-of-node detection, communications and cluster
    management.
    </p>
  </background>
  <description>
    <p>
    Yan Rong Ge discovered that the peel_netstring() function in
    cl_netstring.c does not validate the "length" parameter of user input,
    which can lead to an out-of-bounds memory access when processing
    certain Heartbeat messages (CVE-2006-3121). Furthermore an unspecified
    local DoS issue was fixed (CVE-2006-3815).
    </p>
  </description>
  <impact type="normal">
    <p>
    By sending a malicious UDP Heartbeat message, even before
    authentication, a remote attacker can crash the master control process
    of the cluster.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Heartbeat users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose sys-cluster/heartbeat</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3121">CVE-2006-3121</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3815">CVE-2006-3815</uri>
  </references>
  <metadata tag="requester" timestamp="2006-08-19T16:22:39Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2006-08-21T14:22:38Z">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="2006-08-23T14:19:23Z">
    falco
  </metadata>
</glsa>