glsa-200904-11.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200904-11">
  <title>Tor: Multiple vulnerabilities</title>
  <synopsis>
    Multiple vulnerabilities in Tor might allow for heap corruption, Denial of
    Service, escalation of privileges and information disclosure.
  </synopsis>
  <product type="ebuild">tor</product>
  <announced>2009-04-08</announced>
  <revised count="01">2009-04-08</revised>
  <bug>250018</bug>
  <bug>256078</bug>
  <bug>258833</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/tor" auto="yes" arch="*">
      <unaffected range="ge">0.2.0.34</unaffected>
      <vulnerable range="lt">0.2.0.34</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Tor is an implementation of second generation Onion Routing, a
    connection-oriented anonymizing communication service.
    </p>
  </background>
  <description>
    <ul>
    <li>
    Theo de Raadt reported that the application does not properly drop
    privileges to the primary groups of the user specified via the "User"
    configuration option (CVE-2008-5397).
    </li>
    <li>
    rovv reported that the "ClientDNSRejectInternalAddresses" configuration
    option is not always enforced (CVE-2008-5398).
    </li>
    <li>
    Ilja van Sprundel reported a heap-corruption vulnerability that might
    be remotely triggerable on some platforms (CVE-2009-0414).
    </li>
    <li>
    It has been reported that incomplete IPv4 addresses are treated as
    valid, violating the specification (CVE-2009-0939).
    </li>
    <li>
    Three unspecified vulnerabilities have also been reported
    (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938).
    </li>
    </ul>
  </description>
  <impact type="high">
    <p>
    A local attacker could escalate privileges by leveraging unintended
    supplementary group memberships of the Tor process. A remote attacker
    could exploit these vulnerabilities to cause a heap corruption with
    unknown impact and attack vectors, to cause a Denial of Service via CPU
    consuption or daemon crash, and to weaken anonymity provided by the
    service.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Tor users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-misc/tor-0.2.0.34"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5397">CVE-2008-5397</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5398">CVE-2008-5398</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0414">CVE-2009-0414</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0936">CVE-2009-0936</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0937">CVE-2009-0937</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0938">CVE-2009-0938</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0939">CVE-2009-0939</uri>
  </references>
  <metadata tag="requester" timestamp="2009-01-25T14:41:40Z">
    craig
  </metadata>
  <metadata tag="submitter" timestamp="2009-02-12T16:48:01Z">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="2009-02-12T16:48:17Z">
    rbu
  </metadata>
</glsa>