Timothy B. Terriberry discovered that libvpx contains an integer overflow vulnerability in the processing of video streams that may allow user-assisted execution of arbitrary code.
|Package||media-libs/libvpx on all architectures|
|Affected versions||< 0.9.5|
|Unaffected versions||>= 0.9.5|
libvpx is the VP8 codec SDK used to encode and decode video streams, typically within a WebM format media file.
libvpx is vulnerable to an integer overflow vulnerability when processing crafted VP8 video streams.
A remote attacker could entice a user to open a specially crafted media file, 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 libvpx users should upgrade to the latest stable version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libvpx-0.9.5"
Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying some of these packages.
January 15, 2011
January 15, 2011: 01