[ GLSA 200704-22 ] BEAST: Denial of Service

[GLSA]

Gentoo Linux Security Advisory

Title: BEAST: Denial of Service (GLSA 200704-22)
Severity: low
Exploitable: local
Date: April 27, 2007
Bug(s): #163146
ID: 200704-22

Synopsis


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


Background


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


Affected Packages

Package: media-sound/beast
Vulnerable: < 0.7.1
Unaffected: >= 0.7.1
Architectures: All supported architectures


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: