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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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