GLSA 200704-22: BEAST: Denial of Service

http://security.gentoo.org/

Severity:	low
Title:	BEAST: Denial of Service
Date:	04/27/2007
Bugs:	#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	Vulnerable	Unaffected	Architecture(s)
media-sound/beast	< 0.7.1	>= 0.7.1	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:

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

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-22.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.