glsa-200804-06.xml


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

<glsa id="200804-06">
  <title>UnZip: User-assisted execution of arbitrary code</title>
  <synopsis>
    A double free vulnerability discovered in UnZip might lead to the execution
    of arbitrary code.
  </synopsis>
  <product type="ebuild">unzip</product>
  <announced>April 06, 2008</announced>
  <revised>April 06, 2008: 01</revised>
  <bug>213761</bug>
  <access>remote</access>
  <affected>
    <package name="app-arch/unzip" auto="yes" arch="*">
      <unaffected range="ge">5.52-r2</unaffected>
      <vulnerable range="lt">5.52-r2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Info-ZIP's UnZip is a tool to list and extract files inside PKZIP
    compressed files.
    </p>
  </background>
  <description>
    <p>
    Tavis Ormandy of the Google Security Team discovered that the NEEDBITS
    macro in the inflate_dynamic() function in the file inflate.c can be
    invoked using invalid buffers, which can lead to a double free.
    </p>
  </description>
  <impact type="normal">
    <p>
    Remote attackers could entice a user or automated system to open a
    specially crafted ZIP file that might lead to the execution of
    arbitrary code or a Denial of Service.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All UnZip users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=app-arch/unzip-5.52-r2&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0888">CVE-2008-0888</uri>
  </references>
  <metadata tag="requester" timestamp="Sat, 29 Mar 2008 19:46:56 +0000">
    rbu
  </metadata>
  <metadata tag="submitter" timestamp="Thu, 03 Apr 2008 22:38:54 +0000">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="Thu, 03 Apr 2008 22:39:11 +0000">
    rbu
  </metadata>
</glsa>