glsa-200508-16.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200508-16">
  <title>Tor: Information disclosure</title>
  <synopsis>
    A flaw in Tor leads to the disclosure of information and the loss of
    anonymity, integrity and confidentiality.
  </synopsis>
  <product type="ebuild">tor</product>
  <announced>2005-08-25</announced>
  <revised count="01">2005-08-25</revised>
  <bug>102245</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/tor" auto="yes" arch="*">
      <unaffected range="ge">0.1.0.14</unaffected>
      <vulnerable range="lt">0.1.0.14</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Tor is an implementation of second generation Onion Routing, a
    connection-oriented anonymizing communication service.
    </p>
  </background>
  <description>
    <p>
    The Diffie-Hellman implementation of Tor fails to verify the
    cryptographic strength of keys which are used during handshakes.
    </p>
  </description>
  <impact type="low">
    <p>
    By setting up a malicious Tor server and enticing users to use
    this server as first hop, a remote attacker could read and modify all
    traffic of the user.
    </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-0.1.0.14"</code>
  </resolution>
  <references>
    <uri link="https://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2643">CAN-2005-2643</uri>
    <uri link="http://archives.seul.org/or/announce/Aug-2005/msg00002.html">Tor Security Announcement</uri>
  </references>
  <metadata tag="requester" timestamp="2005-08-23T08:23:08Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2005-08-23T09:42:34Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2005-08-23T16:08:44Z">
    DerCorny
  </metadata>
</glsa>