GLSA 200508-04: Netpbm: Arbitrary code execution in pstopnm

http://security.gentoo.org/

Severity:	normal
Title:	Netpbm: Arbitrary code execution in pstopnm
Date:	08/05/2005
Bugs:	#100398
ID:	200508-04

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	Architecture(s)
media-libs/netpbm	< 10.28	>= 10.28	All supported architectures

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

References

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 https://bugs.gentoo.org.