glsa-200407-18.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200407-18">
  <title>mod_ssl: Format string vulnerability</title>
  <synopsis>
    A bug in mod_ssl may allow a remote attacker to execute arbitrary code when
    Apache is configured to use mod_ssl and mod_proxy.
  </synopsis>
  <product type="ebuild">mod_ssl</product>
  <announced>2004-07-22</announced>
  <revised count="01">2004-07-22</revised>
  <bug>57379</bug>
  <access>remote</access>
  <affected>
    <package name="net-www/mod_ssl" auto="yes" arch="*">
      <unaffected range="ge">2.8.19</unaffected>
      <vulnerable range="le">2.8.18</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    mod_ssl provides Secure Sockets Layer encryption and authentication to
    Apache 1.3.
    </p>
  </background>
  <description>
    <p>
    A bug in ssl_engine_ext.c makes mod_ssl vulnerable to a ssl_log() related
    format string vulnerability in the mod_proxy hook functions.
    </p>
  </description>
  <impact type="normal">
    <p>
    Given the right server configuration, an attacker could execute code as the
    user running Apache, usually "apache".
    </p>
  </impact>
  <workaround>
    <p>
    A server should not be vulnerable if it is not using both mod_ssl and
    mod_proxy. Otherwise there is no workaround other than to disable mod_ssl.
    </p>
  </workaround>
  <resolution>
    <p>
    All mod_ssl users should upgrade to the latest version:
    </p>
    <code>
    # emerge sync

    # emerge -pv "&gt;=net-www/mod_ssl-2.8.19"
    # emerge "&gt;=net-www/mod_ssl-2.8.19"</code>
  </resolution>
  <references>
    <uri link="http://marc.theaimsgroup.com/?l=apache-modssl&amp;m=109001100906749&amp;w=2">mod_ssl Announcement</uri>
  </references>
  <metadata tag="submitter">
    jaervosz
  </metadata>
</glsa>