glsa-200403-01.xml


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

<glsa id="200403-01">
  <title>Libxml2 URI Parsing Buffer Overflow Vulnerabilities</title>
  <synopsis>
    A buffer overflow has been discovered in libxml2 versions prior to
    2.6.6 which may be exploited by an attacker allowing the execution of
    arbitrary code.
  </synopsis>
  <product type="ebuild">libxml</product>
  <announced>March 05, 2004</announced>
  <revised>March 05, 2004: 01</revised>
  <bug>42735</bug>
  <access>local and remote combination</access>
  <affected>
    <package name="dev-libs/libxml2" auto="yes" arch="*">
      <unaffected range="ge">2.6.6</unaffected>
      <vulnerable range="lt">2.6.6</vulnerable>
    </package>
  </affected>
  <description>
    <p>
    Yuuichi Teranishi discovered a flaw in libxml2 versions prior to 2.6.6.
    When the libxml2 library fetches a remote resource via FTP or HTTP, libxml2
    uses parsing routines that can overflow a buffer caused by improper bounds
    checking if they are passed a URL longer than 4096 bytes.
    </p>
  </description>
  <impact type="normal">
    <p>
    If an attacker is able to exploit an application using libxml2 that parses
    remote resources, then this flaw could be used to execute arbitrary code.
    </p>
  </impact>
  <workaround>
    <p>
    No workaround is available; users are urged to upgrade libxml2 to 2.6.6.
    </p>
  </workaround>
  <resolution>
    <p>
    All users are recommended to upgrade their libxml2 installation:
    </p>
    <code>
    # emerge sync
    # emerge -pv ">=dev-libs/libxml2-2.6.6"
    # emerge ">=dev-libs/libxml2-2.6.6"</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0110">CVE 2004-0110</uri>
  </references>
</glsa>