DUMB: Heap buffer overflow

Background

DUMB (Dynamic Universal Music Bibliotheque) is an IT, XM, S3M and MOD player library.

Description

Luigi Auriemma found a heap-based buffer overflow in the it_read_envelope function which reads the envelope values for volume, pan and pitch of the instruments referenced in a “.it” (Impulse Tracker) file with a large number of nodes.

Impact

By enticing a user to load a malicious “.it” (Impulse Tracker) file, an attacker may execute arbitrary code with the rights of the user running the application that uses a vulnerable DUMB library.

Workaround

There is no known workaround at this time.

Resolution

All users of DUMB should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-libs/dumb-0.9.3-r1"