GLSA 200508-04: Netpbm: Arbitrary code execution in pstopnm
Posted on: 08/05/2005 11:40 AM

A Netpbm update has been released for Gentoo Linux

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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
================

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Package / Vulnerable / Unaffected
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1 media-libs/netpbm lt; 10.28 gt;= 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 "gt;=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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