[ GLSA 200508-03 ] nbSMTP: Format string vulnerability

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200508-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: nbSMTP: Format string vulnerability
      Date: August 02, 2005
      Bugs: #100274
        ID: 200508-03

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Synopsis
========

nbSMTP is vulnerable to a format string vulnerability which may result
in remote execution of arbitrary code.

Background
==========

nbSMTP is an SMTP client suitable to run in chroot jails, in embedded
systems, laptops and workstations.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  mail-mta/nbsmtp       < 1.00                              >= 1.00

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

Niels Heinen discovered a format string vulnerability.

Impact
======

An attacker can setup a malicious SMTP server and exploit this
vulnerability to execute arbitrary code with the permissions of the
user running nbSMTP.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All nbSMTP users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-mta/nbsmtp-1.0"

References
==========

  [ 1 ] nbSMTP official site
        http://nbsmtp.ferdyx.org/

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

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

  http://security.gentoo.org/glsa/glsa-200508-03.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 () gentoo org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0

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