FLAC: User-assisted execution of arbitrary code

Background

The Free Lossless Audio Codec (FLAC) library is the reference implementation of the FLAC audio file format.

Description

A stack-based buffer overflow flaw has been discovered in FLAC.

Impact

A remote attacker could entice a user to open a specially crafted .flac file using an application linked against FLAC, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All FLAC users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-libs/flac-1.3.1-r1"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.