GraphicsMagick: Format string vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200602-13 / graphicsmagick
Release Date	February 26, 2006
Latest Revision	February 26, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/graphicsmagick	< 1.1.7	>= 1.1.7	All supported architectures

Related bugreports: #119476

Synopsis

A vulnerability in GraphicsMagick allows attackers to crash the application and potentially execute arbitrary code.

2. Impact Information

Background

GraphicsMagick is a collection of tools to read, write and manipulate images in many formats.

Description

The SetImageInfo function was found vulnerable to a format string mishandling. Daniel Kobras discovered that the handling of "%"-escaped sequences in filenames passed to the function is inadequate in ImageMagick GLSA 200602-06 and the same vulnerability exists in GraphicsMagick.

Impact

By feeding specially crafted file names to GraphicsMagick an attacker can crash the program and possibly execute arbitrary code with the privileges of the user running GraphicsMagick.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All GraphicsMagick users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/graphicsmagick-1.1.7"

4. References

Updated February 26, 2006

Summary: This is a Gentoo Linux Security Advisory

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