aRts: Privilege escalation

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200606-22 / aRts
Release Date	June 22, 2006
Latest Revision	June 22, 2006: 01
Impact	high
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
kde-base/arts	< 3.5.2-r1	>= 3.5.2-r1, revision >= 3.4.3-r1	All supported architectures

Related bugreports: #135970

Synopsis

The artswrapper part of aRts allows local users to execute arbitrary code with elevated privileges.

2. Impact Information

Background

aRts is a real time modular system for synthesizing audio used by KDE. artswrapper is a helper application used to start the aRts daemon.

Description

artswrapper fails to properly check whether it can drop privileges accordingly if setuid() fails due to a user exceeding assigned resource limits.

Impact

Local attackers could exploit this vulnerability to execute arbitrary code with elevated privileges. Note that the aRts package provided by Gentoo is only vulnerable if the artswrappersuid USE-flag is enabled.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All aRts users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose kde-base/arts

4. References

CVE-2006-2916

Updated June 22, 2006

Summary: This is a Gentoo Linux Security Advisory

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