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[ GLSA 200808-09 ] OpenLDAP: Denial of Service vulnerability



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Gentoo Linux Security Advisory                           GLSA 200808-09
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: OpenLDAP: Denial of Service vulnerability
      Date: August 08, 2008
      Bugs: #230269
        ID: 200808-09

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Synopsis
========

A flaw in OpenLDAP allows remote unauthenticated attackers to cause a
Denial of Service.

Background
==========

OpenLDAP Software is an open source implementation of the Lightweight
Directory Access Protocol.

Affected packages
=================

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  net-nds/openldap      < 2.3.43                          >= 2.3.43

Description
===========

Cameron Hotchkies discovered an error within the parsing of ASN.1 BER
encoded packets in the "ber_get_next()" function in
libraries/liblber/io.c.

Impact
======

A remote unauthenticated attacker can send a specially crafted ASN.1
BER encoded packet which will trigger the error and cause an
"assert()", terminating the "slapd" daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenLDAP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-nds/openldap-2.3.43"

References
==========

  [ 1 ] CVE-2008-2952
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2952

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200808-09.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5

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