glsa-200705-17.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200705-17">
  <title>Apache mod_security: Rule bypass</title>
  <synopsis>
    A vulnerability has been discovered in mod_security, allowing a remote
    attacker to bypass rules.
  </synopsis>
  <product type="ebuild">mod_security</product>
  <announced>2007-05-17</announced>
  <revised count="02">2007-12-30</revised>
  <bug>169778</bug>
  <access>remote</access>
  <affected>
    <package name="www-apache/mod_security" auto="yes" arch="*">
      <unaffected range="ge">2.1.1</unaffected>
      <vulnerable range="lt">2.1.1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    mod_security is an Apache module designed for enhancing the security of
    the Apache web server.
    </p>
  </background>
  <description>
    <p>
    Stefan Esser discovered that mod_security processes NULL characters as
    terminators in POST requests using the
    application/x-www-form-urlencoded encoding type, while other parsers
    used in web applications do not.
    </p>
  </description>
  <impact type="low">
    <p>
    A remote attacker could send a specially crafted POST request, possibly
    bypassing the module ruleset and leading to the execution of arbitrary
    code in the scope of the web server with the rights of the user running
    the web server.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All mod_security users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=www-apache/mod_security-2.1.1"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1359">CVE-2007-1359</uri>
  </references>
  <metadata tag="requester" timestamp="2007-05-11T23:14:33Z">
    shellsage
  </metadata>
  <metadata tag="bugReady" timestamp="2007-05-13T04:49:45Z">
    shellsage
  </metadata>
  <metadata tag="submitter" timestamp="2007-05-13T13:46:57Z">
    p-y
  </metadata>
</glsa>