glsa-200410-08.xml


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

<glsa id="200410-08">
  <title>ncompress: Buffer overflow</title>
  <synopsis>
    compress and uncompress, which could be used by daemon programs, contain a
    buffer overflow that could lead to remote execution of arbitrary code with
    the rights of the daemon process.
  </synopsis>
  <product type="ebuild">ncompress</product>
  <announced>October 09, 2004</announced>
  <revised>May 22, 2006: 02</revised>
  <bug>66251</bug>
  <access>remote</access>
  <affected>
    <package name="app-arch/ncompress" auto="yes" arch="*">
      <unaffected range="ge">4.2.4-r1</unaffected>
      <vulnerable range="le">4.2.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ncompress is a utility handling compression and decompression of
    Lempel-Ziv archives, compatible with the original *nix compress and
    uncompress utilities (.Z extensions).
    </p>
  </background>
  <description>
    <p>
    compress and uncompress do not properly check bounds on command line
    options, including the filename. Large parameters would trigger a
    buffer overflow.
    </p>
  </description>
  <impact type="normal">
    <p>
    By supplying a carefully crafted filename or other option, an attacker
    could execute arbitrary code on the system. A local attacker could only
    execute code with his own rights, but since compress and uncompress are
    called by various daemon programs, this might also allow a remote
    attacker to execute code with the rights of the daemon making use of
    ncompress.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All ncompress users should upgrade to the latest version:
    </p>
    <code>
    # emerge sync
    
    # emerge -pv &quot;&gt;=app-arch/ncompress-4.2.4-r1&quot;
    # emerge &quot;&gt;=app-arch/ncompress-4.2.4-r1&quot;</code>
  </resolution>
  <references>
    <uri link="http://www.kb.cert.org/vuls/id/176363">US-CERT Vulnerability Note VU#176363</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-1413">CVE-2001-1413</uri>
  </references>
  <metadata tag="requester" timestamp="Fri,  8 Oct 2004 21:09:39 +0000">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="Fri,  8 Oct 2004 21:11:15 +0000">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="Sat,  9 Oct 2004 10:24:20 +0000">
    koon
  </metadata>
</glsa>