BEAST: Denial of Service — GLSA 200704-22

A vulnerability has been discovered in BEAST allowing for a Denial of Service.

Affected Packages

media-sound/beast on all architectures
Affected versions < 0.7.1
Unaffected versions >= 0.7.1

Background

BEdevilled Audio SysTem is an audio compositor, supporting a wide range of audio formats.

Description

BEAST, which is installed as setuid root, fails to properly check whether it can drop privileges accordingly if seteuid() fails due to a user exceeding assigned resource limits.

Impact

A local user could exceed his resource limit in order to prevent the seteuid() call from succeeding. This may lead BEAST to keep running with root privileges. Then, the local user could use the "save as" dialog box to overwrite any file on the vulnerable system, potentially leading to a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All BEAST users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=media-sound/beast-0.7.1"

References

Release Date
April 27, 2007

Latest Revision
April 27, 2007: 01

Severity
low

Exploitable
local

Bugzilla entries