glsa-200404-17.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200404-17">
  <title>ipsec-tools and iputils contain a remote DoS vulnerability</title>
  <synopsis>
    racoon, which is included in the ipsec-tools and iputils packages in
    Portage, does not check the length of ISAKMP headers. Attackers may be able
    to craft an ISAKMP header of sufficient length to consume all available
    system resoources, causing a Denial of Service.
  </synopsis>
  <product type="ebuild">ipsec-utils</product>
  <announced>2004-04-24</announced>
  <revised count="01">2004-04-24</revised>
  <bug>48847</bug>
  <access>remote </access>
  <affected>
    <package name="net-firewall/ipsec-tools" auto="yes" arch="amd64">
      <unaffected range="ge">0.3.1</unaffected>
      <vulnerable range="lt">0.3.1</vulnerable>
    </package>
    <package name="net-misc/iputils" auto="yes" arch="ppc amd64 ppc64 s390">
      <unaffected range="eq">021109-r3</unaffected>
      <vulnerable range="eq">021109-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    From <uri link="http://ipsec-tools.sourceforge.net/">http://ipsec-tools.sourceforge.n
    et/</uri>
    </p>
    <p>
    "IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec
    implementation."
    </p>
    <p>
    iputils is a collection of network monitoring tools, including racoon, ping
    and ping6.
    </p>
  </background>
  <description>
    <p>
    When racoon receives an ISAKMP header, it allocates memory based on the
    length of the header field. Thus, an attacker may be able to cause a Denial
    of Services by creating a header that is large enough to consume all
    available system resources.
    </p>
  </description>
  <impact type="normal">
    <p>
    This vulnerability may allow an attacker to remotely cause a Denial of
    Service.
    </p>
  </impact>
  <workaround>
    <p>
    A workaround is not currently known for this issue. All users are advised
    to upgrade to the latest version of the affected package.
    </p>
  </workaround>
  <resolution>
    <p>
    ipsec-tools users should upgrade to version 0.2.5 or later:
    </p>
    <code>
    # emerge sync

    # emerge -pv "&gt;=net-firewall/ipsec-tools-0.3.1"
    # emerge "&gt;=net-firewall/ipsec-tools-0.3.1"</code>
    <p>
    iputils users should upgrade to version 021109-r3 or later:
    </p>
    <code>
    # emerge sync

    # emerge -pv "&gt;=net-misc/iputils-021109-r3"
    # emerge "&gt;=net-misc/iputils-021109-r3"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0403">CVE</uri>
  </references>
  <metadata tag="submitter">
    klieber
  </metadata>
</glsa>