[ GLSA 200812-08 ] Mgetty: Insecure temporary file usage

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200812-08
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                                             http://security.gentoo.org/
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   Severity: Normal
      Title: Mgetty: Insecure temporary file usage
       Date: December 06, 2008
       Bugs: #235806
         ID: 200812-08

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Synopsis
========

Mgetty uses temporary files in an insecure manner, allowing for symlink
attacks.

Background
==========

Mgetty is a set of fax and voice modem programs.

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

     -------------------------------------------------------------------
      Package            /   Vulnerable   /                  Unaffected
     -------------------------------------------------------------------
   1  net-dialup/mgetty      < 1.1.36-r2                   >= 1.1.36-r2

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

Dmitry E. Oboukhov reported that the "spooldir" directory in
fax/faxspool.in is created in an insecure manner.

Impact
======

A local attacker could exploit this vulnerability to overwrite
arbitrary files with the privileges of the user running the
application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Mgetty users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=net-dialup/mgetty-1.1.36-r2"

References
==========

   [ 1 ] CVE-2008-4936
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4936

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

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

   http://security.gentoo.org/glsa/glsa-200812-08.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 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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