GLSA 200802-01: SDL_image: Two buffer overflow vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	SDL_image: Two buffer overflow vulnerabilities
Date:	02/06/2008
Bugs:	#207933
ID:	200802-01

Synopsis

Two boundary errors have been identified in SDL_image allowing for the remote execution of arbitrary code or the crash of the application using the library.

Background

SDL_image is an image file library that loads images as SDL surfaces, and supports various formats like BMP, GIF, JPEG, LBM, PCX, PNG, PNM, TGA, TIFF, XCF, XPM, and XV.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/sdl-image	< 1.2.6-r1	>= 1.2.6-r1	All supported architectures

Description

The LWZReadByte() function in file IMG_gif.c and the IMG_LoadLBM_RW() function in file IMG_lbm.c each contain a boundary error that can be triggered to cause a static buffer overflow and a heap-based buffer overflow. The first boundary error comes from some old vulnerable GD PHP code (CVE-2006-4484).

Impact

A remote attacker can make an application using the SDL_image library to process a specially crafted GIF file or IFF ILBM file that will trigger a buffer overflow, resulting in the execution of arbitrary code with the permissions of the application or the application crash.

Workaround

There is no known workaround at this time.

Resolution

All SDL_image users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/sdl-image-1.2.6-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200802-01.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.