glsa-200603-11.xml


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

<glsa id="200603-11">
  <title>Freeciv: Denial of Service</title>
  <synopsis>
    A memory allocation bug in Freeciv allows a remote attacker to perform a
    Denial of Service attack.
  </synopsis>
  <product type="ebuild">freeciv</product>
  <announced>March 16, 2006</announced>
  <revised>March 16, 2006: 01</revised>
  <bug>125304</bug>
  <access>remote</access>
  <affected>
    <package name="games-strategy/freeciv" auto="yes" arch="*">
      <unaffected range="ge">2.0.8</unaffected>
      <vulnerable range="lt">2.0.8</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Freeciv is an open source turn-based multiplayer strategy game,
    similar to the famous Civilization series.
    </p>
  </background>
  <description>
    <p>
    Luigi Auriemma discovered that Freeciv could be tricked into the
    allocation of enormous chunks of memory when trying to uncompress
    malformed data packages, possibly leading to an out of memory condition
    which causes Freeciv to crash or freeze.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could exploit this issue to cause a Denial of
    Service by sending specially crafted data packages to the Freeciv game
    server.
    </p>
  </impact>
  <workaround>
    <p>
    Play solo games or restrict your multiplayer games to trusted
    parties.
    </p>
  </workaround>
  <resolution>
    <p>
    All Freeciv users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=games-strategy/freeciv-2.0.8&quot;</code>
  </resolution>
  <references>
    <uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0047">CVE-2006-0047</uri>
    <uri link="http://aluigi.altervista.org/adv/freecivdos-adv.txt">Original advisory</uri>
  </references>
  <metadata tag="submitter" timestamp="Sun, 12 Mar 2006 20:13:19 +0000">
    DerCorny
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 12 Mar 2006 20:29:12 +0000">
    DerCorny
  </metadata>
</glsa>