Date: Fri, 05 Aug 2005 12:44:32 +0200
From: Thierry Carrez <koon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200508-04 ] Netpbm: Arbitrary code execution in pstopnm
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Gentoo Linux Security Advisory GLSA 200508-04
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http://security.gentoo.org/
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Severity: Normal
Title: Netpbm: Arbitrary code execution in pstopnm
Date: August 05, 2005
Bugs: #100398
ID: 200508-04
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Synopsis
========
The pstopnm utility, part of the Netpbm tools, contains a vulnerability
which can potentially result in the execution of arbitrary code.
Background
==========
Netpbm is a package of 220 graphics programs and a programming
libraries, including pstopnm. pstopnm is a tool which converts
PostScript files to PNM image files.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/netpbm < 10.28 >= 10.28
Description
===========
Max Vozeler reported that pstopnm calls the GhostScript interpreter on
untrusted PostScript files without specifying the -dSAFER option, to
convert a PostScript file into a PBM, PGM, or PNM file.
Impact
======
An attacker could craft a malicious PostScript file and entice a user
to run pstopnm on it, resulting in the execution of arbitrary commands
with the permissions of the user running pstopnm.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Netpbm users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/netpbm-10.28"
References
==========
[ 1 ] Secunia Advisory SA16184
http://secunia.com/advisories/16184/
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200508-04.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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