SDL_image: Two buffer overflow vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200802-01 / sdl-image
Release Date	February 06, 2008
Latest Revision	February 06, 2008: 01
Impact	normal
Exploitable	remote

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

Related bugreports: #207933

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.

2. Impact Information

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.

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All SDL_image users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4. References

Updated February 06, 2008

Summary: This is a Gentoo Linux Security Advisory

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