glsa-200711-33.xml


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

<glsa id="200711-33">
  <title>nss_ldap: Information disclosure</title>
  <synopsis>
    A race condition might lead to theft of user credentials or information
    disclosure in services using nss_ldap.
  </synopsis>
  <product type="ebuild">nss_ldap</product>
  <announced>November 25, 2007</announced>
  <revised>November 25, 2007: 01</revised>
  <bug>198390</bug>
  <access>remote</access>
  <affected>
    <package name="sys-auth/nss_ldap" auto="yes" arch="*">
      <unaffected range="ge">258</unaffected>
      <vulnerable range="lt">258</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    nss_ldap is a Name Service Switch module which allows 'passwd', 'group'
    and 'host' database information to be pulled from LDAP.
    </p>
  </background>
  <description>
    <p>
    Josh Burley reported that nss_ldap does not properly handle the LDAP
    connections due to a race condition that can be triggered by
    multi-threaded applications using nss_ldap, which might lead to
    requested data being returned to a wrong process.
    </p>
  </description>
  <impact type="low">
    <p>
    Remote attackers could exploit this race condition by sending queries
    to a vulnerable server using nss_ldap, possibly leading to theft of
    user credentials or information disclosure (e.g. Dovecot returning
    wrong mailbox contents).
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All nss_ldap users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=sys-auth/nss_ldap-258&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5794">CVE-2007-5794</uri>
  </references>
  <metadata tag="requester" timestamp="Sun, 18 Nov 2007 15:50:09 +0000">
    p-y
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 18 Nov 2007 15:50:16 +0000">
    p-y
  </metadata>
  <metadata tag="submitter" timestamp="Wed, 21 Nov 2007 00:25:43 +0000">
    rbu
  </metadata>
</glsa>