bugtraq - [ GLSA 200701-19 ] OpenLDAP: Insecure usage of /tmp during installation

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Message-ID: <20070123223807.GD28520@falco.falcal.net>
Date: Tue, 23 Jan 2007 23:38:07 +0100
From: Raphael Marichez <falco@...too.org>
To: gentoo-announce@...too.org
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200701-19 ] OpenLDAP: Insecure usage of /tmp during installation

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Gentoo Linux Security Advisory                           GLSA 200701-19
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: OpenLDAP: Insecure usage of /tmp during installation
      Date: January 23, 2007
      Bugs: #159508
        ID: 200701-19

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Synopsis
========

A shell script commonly released with OpenLDAP makes insecure usage of
files in /tmp during the emerge process.

Background
==========

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

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

    -------------------------------------------------------------------
     Package           /   Vulnerable   /                   Unaffected
    -------------------------------------------------------------------
  1  net-nds/openldap     < 2.1.30-r10                   >= 2.1.30-r10
                                                          >= 2.2.28-r7
                                                          >= 2.3.30-r2
     net-nds/openldap      < 2.2.28-r7                   >= 2.1.30-r10
                                                          >= 2.2.28-r7
                                                          >= 2.3.30-r2
     net-nds/openldap      < 2.3.30-r2                   >= 2.1.30-r10
                                                          >= 2.2.28-r7
                                                          >= 2.3.30-r2

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

Tavis Ormandy of the Gentoo Linux Security Team has discovered that the
file gencert.sh distributed with the Gentoo ebuild for OpenLDAP does
not exit upon the existence of a directory in /tmp during installation
allowing for directory traversal.

Impact
======

A local attacker could create a symbolic link in /tmp and potentially
overwrite arbitrary system files upon a privileged user emerging
OpenLDAP.

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"

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

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

  http://security.gentoo.org/glsa/glsa-200701-19.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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