glsa-200708-03.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200708-03">
  <title>libarchive (formerly named as bsdtar): Multiple PaX Extension Header Vulnerabilities</title>
  <synopsis>
    Multiple vulnerabilities were found in libarchive (formerly named as
    app-archive/bsdtar), possibly allowing for the execution of arbitrary code
    or a Denial of Service.
  </synopsis>
  <product type="ebuild">libarchive</product>
  <announced>2007-08-08</announced>
  <revised count="02">2007-08-08</revised>
  <bug>184984</bug>
  <access>remote</access>
  <affected>
    <package name="app-arch/libarchive" auto="yes" arch="*">
      <unaffected range="ge">2.2.4</unaffected>
      <vulnerable range="lt">2.2.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    libarchive is a library for manipulating different streaming archive
    formats, including certain tar variants, several cpio formats, and both
    BSD and GNU ar variants.
    </p>
  </background>
  <description>
    <p>
    CPNI, CERT-FI, Tim Kientzle, and Colin Percival reported a buffer
    overflow (CVE-2007-3641), an infinite loop (CVE-2007-3644), and a NULL
    pointer dereference (CVE-2007-3645) within the processing of archives
    having corrupted PaX extension headers.
    </p>
  </description>
  <impact type="normal">
    <p>
    An attacker can trick a user or automated system to process an archive
    with malformed PaX extension headers into execute arbitrary code, crash
    an application using the library, or cause a high CPU load.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All libarchive or bsdtar users should upgrade to the latest libarchive
    version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=app-arch/libarchive-2.2.4"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3641">CVE-2007-3641</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3644">CVE-2007-3644</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3645">CVE-2007-3645</uri>
  </references>
  <metadata tag="requester" timestamp="2007-07-15T10:30:41Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2007-07-15T19:19:38Z">
    DerCorny
  </metadata>
  <metadata tag="bugReady" timestamp="2007-07-17T17:56:39Z">
    jaervosz
  </metadata>
</glsa>