[ GLSA 200510-01 ] gtkdiskfree: Insecure temporary file creation

[Thierry Carrez]

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Gentoo Linux Security Advisory GLSA 200510-01
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http://security.gentoo.org/
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Severity: Normal
Title: gtkdiskfree: Insecure temporary file creation
Date: October 03, 2005
Bugs: #104565
ID: 200510-01

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Synopsis
========

gtkdiskfree is vulnerable to symlink attacks, potentially allowing a
local user to overwrite arbitrary files.

Background
==========

gtkdiskfree is a GTK-based GUI to show free disk space.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-admin/gtkdiskfree < 1.9.3-r1 >= 1.9.3-r1

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

Eric Romang discovered that gtkdiskfree insecurely creates a
predictable temporary file to handle command output.

Impact
======

A local attacker could create a symbolic link in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
gtkdiskfree is executed, this would result in the file being
overwritten with the rights of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All gtkdiskfree users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/gtkdiskfree-1.9.3-r1"

References
==========

[ 1 ] CAN-2005-2918
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2918
[ 2 ] Original Advisory
http://www.zataz.net/adviso/gtkdiskfree-09052005.txt

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

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

http://security.gentoo.org/glsa/glsa-200510-01.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 2005 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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