Joined: 12 May 2004
|Posted: Mon Mar 09, 2009 3:26 pm Post subject: [ GLSA 200903-12 ] OptiPNG: User-assisted execution of arbit
|Gentoo Linux Security Advisory
Title: OptiPNG: User-assisted execution of arbitrary code (GLSA 200903-12)
Date: March 09, 2009
A vulnerability in OptiPNG might result in user-assisted execution of arbitrary code.
OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information.
Vulnerable: < 0.6.2-r1
Unaffected: >= 0.6.2-r1
Architectures: All supported architectures
Roy Tam reported a use-after-free vulnerability in the GIFReadNextExtension() function in lib/pngxtern/gif/gifread.c leading to a memory corruption when reading a GIF image.
A remote attacker could entice a user to process a specially crafted GIF image, possibly resulting in the execution of arbitrary code with the privileges of the user running the application, or a Denial of Service.
There is no known workaround at this time.
All OptiPNG users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/optipng-0.6.2-r1"