metadata/glsa/glsa-200502-09.xml


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

<glsa id="200502-09">
  <title>Python: Arbitrary code execution through SimpleXMLRPCServer</title>
  <synopsis>
    Python-based XML-RPC servers may be vulnerable to remote execution of
    arbitrary code.
  </synopsis>
  <product type="ebuild">Python</product>
  <announced>February 08, 2005</announced>
  <revised>February 08, 2005: 01</revised>
  <bug>80592</bug>
  <access>remote</access>
  <affected>
    <package name="dev-lang/python" auto="yes" arch="*">
      <unaffected range="ge">2.3.4-r1</unaffected>
      <unaffected range="rge">2.3.3-r2</unaffected>
      <unaffected range="rge">2.2.3-r6</unaffected>
      <vulnerable range="le">2.3.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Python is an interpreted, interactive, object-oriented,
    cross-platform programming language.
    </p>
  </background>
  <description>
    <p>
    Graham Dumpleton discovered that XML-RPC servers making use of the
    SimpleXMLRPCServer library that use the register_instance() method to
    register an object without a _dispatch() method are vulnerable to a
    flaw allowing to read or modify globals of the associated module.
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker may be able to exploit the flaw in such XML-RPC
    servers to execute arbitrary code on the server host with the rights of
    the XML-RPC server.
    </p>
  </impact>
  <workaround>
    <p>
    Python users that don't make use of any SimpleXMLRPCServer-based
    XML-RPC servers, or making use of servers using only the
    register_function() method are not affected.
    </p>
  </workaround>
  <resolution>
    <p>
    All Python users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose dev-lang/python</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0089">CAN-2005-0089</uri>
    <uri link="http://www.python.org/security/PSF-2005-001/">Python PSF-2005-001</uri>
  </references>
  <metadata tag="requester" timestamp="Fri,  4 Feb 2005 14:45:11 +0000">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="Mon,  7 Feb 2005 08:31:41 +0000">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="Tue,  8 Feb 2005 19:35:29 +0000">
    koon
  </metadata>
</glsa>