metadata/glsa/glsa-200908-08.xml

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

<glsa id="200908-08">
  <title>ISC DHCP: dhcpd Denial of Service</title>
  <synopsis>
    dhcpd as included in the ISC DHCP implementation does not properly handle
    special conditions, leading to a Denial of Service.
  </synopsis>
  <product type="ebuild">dhcp</product>
  <announced>August 18, 2009</announced>
  <revised>August 18, 2009: 01</revised>
  <bug>275231</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/dhcp" auto="yes" arch="*">
      <unaffected range="ge">3.1.2_p1</unaffected>
      <vulnerable range="lt">3.1.2_p1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ISC DHCP is the reference implementation of the Dynamic Host
    Configuration Protocol as specified in RFC 2131.
    </p>
  </background>
  <description>
    <p>
    Christoph Biedl discovered that dhcpd does not properly handle certain
    DHCP requests when configured both using "dhcp-client-identifier" and
    "hardware ethernet".
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker might send a specially crafted request to dhcpd,
    possibly resulting in a Denial of Service (daemon crash).
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All ISC DHCP users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-misc/dhcp-3.1.2_p1&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1892">CVE-2009-1892</uri>
  </references>
  <metadata tag="requester" timestamp="Tue, 28 Jul 2009 17:01:31 +0000">
    rbu
  </metadata>
  <metadata tag="submitter" timestamp="Tue, 04 Aug 2009 19:40:02 +0000">
    a3li
  </metadata>
  <metadata tag="bugReady" timestamp="Wed, 05 Aug 2009 13:32:31 +0000">
    a3li
  </metadata>
</glsa>