GLSA 201006-16: GD: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	GD: User-assisted execution of arbitrary code
Date:	06/03/2010
Bugs:	#292130
ID:	201006-16

Synopsis

The GD library is prone to a buffer overflow vulnerability.

Background

GD is a graphic library for fast image creation.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/gd	< 2.0.35-r1	>= 2.0.35-r1	All supported architectures

Description

Tomas Hoger reported that the _gdGetColors() function in gd_gd.c does not properly verify the colorsTotal struct member, possibly leading to a buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted image file with a program using the GD library, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application, or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All GD users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/gd-2.0.35-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since November 21, 2009. It is likely that your system is already no longer affected by this issue.

References

CVE-2009-3546

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201006-16.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.