glsa-200508-22.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200508-22">
  <title>pam_ldap: Authentication bypass vulnerability</title>
  <synopsis>
    pam_ldap contains a vulnerability that may allow a remote attacker to gain
    system access.
  </synopsis>
  <product type="ebuild">pam_ldap</product>
  <announced>2005-08-31</announced>
  <revised count="01">2005-08-31</revised>
  <bug>103659</bug>
  <access>remote</access>
  <affected>
    <package name="sys-auth/pam_ldap" auto="yes" arch="*">
      <unaffected range="ge">180</unaffected>
      <vulnerable range="lt">180</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    pam_ldap is a Pluggable Authentication Module which allows
    authentication against LDAP directories.
    </p>
  </background>
  <description>
    <p>
    When a pam_ldap client attempts to authenticate against an LDAP
    server that omits the optional error value from the
    PasswordPolicyResponseValue, the authentication attempt will always
    succeed.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker may exploit this vulnerability to bypass the
    LDAP authentication mechanism, gaining access to the system possibly
    with elevated privileges.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All pam_ldap users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=sys-auth/pam_ldap-180"</code>
  </resolution>
  <references>
    <uri link="https://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2641">CAN-2005-2641</uri>
    <uri link="https://www.kb.cert.org/vuls/id/778916">US-CERT VU#778916</uri>
  </references>
  <metadata tag="requester" timestamp="2005-08-29T14:50:51Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2005-08-29T14:51:34Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2005-08-29T20:08:30Z">
    adir
  </metadata>
</glsa>