<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200705-09">
  <title>IPsec-Tools: Denial of service</title>
  <synopsis>
    IPsec-Tools contains a vulnerability that allows a remote attacker to crash
    the IPsec tunnel.
  </synopsis>
  <product type="ebuild">ipsec-tools</product>
  <announced>2007-05-08</announced>
  <revised count="01">2007-05-08</revised>
  <bug>173219</bug>
  <access>remote</access>
  <affected>
    <package name="net-firewall/ipsec-tools" auto="yes" arch="*">
      <unaffected range="ge">0.6.7</unaffected>
      <vulnerable range="lt">0.6.7</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    IPsec-Tools is a port of KAME's implementation of the IPsec utilities.
    It contains a collection of network monitoring tools, including racoon,
    ping, and ping6.
    </p>
  </background>
  <description>
    <p>
    The isakmp_info_recv() function in src/racoon/isakmp_inf.c does not
    always check that DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N)
    packets are encrypted.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could send a specially crafted IPsec message to one
    of the two peers during the beginning of phase 1, resulting in the
    termination of the IPsec exchange.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All IPsec-Tools users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-firewall/ipsec-tools-0.6.7"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1841">CVE-2007-1841</uri>
  </references>
  <metadata tag="requester" timestamp="2007-05-03T18:53:19Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2007-05-06T12:07:13Z">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="2007-05-07T19:54:14Z">
    vorlon
  </metadata>
</glsa>
