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

Posted on 06 December 2008
Gentoo-announce

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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-r=2

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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