A new security update has been released for Gentoo Linux - aview: Insecure temporary file usage. Here the announcement:

Gentoo Linux Security Advisory GLSA 200812-14
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http://security.gentoo.org/
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Severity: Normal
Title: aview: Insecure temporary file usage
Date: December 14, 2008
Bugs: #235808
ID: 200812-14

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Synopsis
========

An insecure temporary file usage has been reported in aview, leading to
symlink attacks.

Background
==========

aview is an ASCII image viewer and animation player.

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

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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/aview < 1.3.0_rc1-r1 >= 1.3.0_rc1-r1

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

Dmitry E. Oboukhov reported that aview uses the "/tmp/aview$$.pgm" file
in an insecure manner when processing files.

Impact
======

A local attacker could perform symlink attacks to overwrite arbitrary
files on the system with the privileges of the user running the
application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All aview users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/aview-1.3.0_rc1-r1"=


References
==========

[ 1 ] CVE-2008-4935
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4935

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

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

http://security.gentoo.org/glsa/glsa-200812-14.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