[ GLSA 200604-13 ] fbida: Insecure temporary file creation

[Sune Kloppenborg Jeppesen]

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Gentoo Linux Security Advisory GLSA 200604-13
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http://security.gentoo.org/
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Severity: Normal
Title: fbida: Insecure temporary file creation
Date: April 23, 2006
Bugs: #129470
ID: 200604-13

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Synopsis
========

fbida is vulnerable to linking attacks, potentially allowing a local
user to overwrite arbitrary files.

Background
==========

fbida is a collection of image viewers and editors for the framebuffer
console and X11.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/fbida < 2.03-r3 >= 2.03-r3

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

Jan Braun has discovered that the "fbgs" script provided by fbida
insecurely creates temporary files in the "/var/tmp" directory.

Impact
======

A local attacker could create links in the temporary file directory,
pointing to a valid file somewhere on the filesystem. When an affected
script is called, this could result in the file being overwritten with
the rights of the user running the script.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All fbida users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/fbida-2.03-r3"

References
==========

[ 1 ] CVE-2006-1695
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1695

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

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

http://security.gentoo.org/glsa/glsa-200604-13.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 2006 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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