glsa-200411-07.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200411-07">
  <title>Proxytunnel: Format string vulnerability</title>
  <synopsis>
    Proxytunnel is vulnerable to a format string vulnerability, potentially
    allowing a remote server to execute arbitrary code with the rights of the
    Proxytunnel process.
  </synopsis>
  <product type="ebuild">Proxytunnel</product>
  <announced>2004-11-03</announced>
  <revised count="01">2004-11-03</revised>
  <bug>69379</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/proxytunnel" auto="yes" arch="*">
      <unaffected range="ge">1.2.3</unaffected>
      <vulnerable range="lt">1.2.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Proxytunnel is a program that tunnels connections to a remote server
    through a standard HTTPS proxy.
    </p>
  </background>
  <description>
    <p>
    Florian Schilhabel of the Gentoo Linux Security Audit project found a
    format string vulnerability in Proxytunnel. When the program is started in
    daemon mode (-a [port]), it improperly logs invalid proxy answers to
    syslog.
    </p>
  </description>
  <impact type="normal">
    <p>
    A malicious remote server could send specially-crafted invalid answers to
    exploit the format string vulnerability, potentially allowing the execution
    of arbitrary code on the tunnelling host with the rights of the Proxytunnel
    process.
    </p>
  </impact>
  <workaround>
    <p>
    You can mitigate the issue by only allowing connections to trusted remote
    servers.
    </p>
  </workaround>
  <resolution>
    <p>
    All Proxytunnel users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-misc/proxytunnel-1.2.3"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0992">CAN-2004-0992</uri>
    <uri link="https://proxytunnel.sourceforge.net/news.html">Proxytunnel News</uri>
  </references>
  <metadata tag="requester" timestamp="2004-11-02T21:56:56Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2004-11-03T09:32:39Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2004-11-03T14:02:21Z">
    koon
  </metadata>
</glsa>