glsa-200703-19.xml


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

<glsa id="200703-19">
  <title>LTSP: Authentication bypass in included LibVNCServer code</title>
  <synopsis>
    LTSP includes a version of libVNCServer that is vulnerable to an
    authentication bypass.
  </synopsis>
  <product type="ebuild">ltsp</product>
  <announced>March 18, 2007</announced>
  <revised>March 18, 2007: 01</revised>
  <bug>142661</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/ltsp" auto="yes" arch="*">
      <unaffected range="ge">4.2-r1</unaffected>
      <vulnerable range="lt">4.2-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    The Linux Terminal Server Project adds thin-client support to Linux
    servers.
    </p>
  </background>
  <description>
    <p>
    The LTSP server includes vulnerable LibVNCServer code, which fails to
    properly validate protocol types effectively letting users decide what
    protocol to use, such as "Type 1 - None" (GLSA-200608-05). The LTSP VNC
    server will accept this security type, even if it is not offered by the
    server.
    </p>
  </description>
  <impact type="high">
    <p>
    An attacker could exploit this vulnerability to gain unauthorized
    access with the privileges of the user running the VNC server.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All LTSP users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-misc/ltsp-4.2-r1&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450">CVE-2006-2450</uri>
    <uri link="/security/en/glsa/glsa-200608-05.xml">GLSA 200608-05</uri>
  </references>
  <metadata tag="requester" timestamp="Sat, 10 Feb 2007 19:11:34 +0000">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="Sat, 10 Feb 2007 23:53:14 +0000">
    falco
  </metadata>
  <metadata tag="submitter" timestamp="Tue, 27 Feb 2007 02:25:26 +0000">
    aetius
  </metadata>
</glsa>