PulseAudio pa_drop_root function privilege escalation
| pulseaudio-padroproot-privilege-escalation (39992) |  High Risk |
Description:
PulseAudio could allow a local attacker to gain elevated privileges, caused by a failure to drop privileges in the pa_drop_root() function. An attacker could exploit this vulnerability using unknown attack vectors to gain root privileges.
Platforms Affected:
- Canonical, Ubuntu 7.04
- Canonical, Ubuntu 7.10
- Debian, Debian Linux 4.0
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- PulseAudio, PulseAudio prior to 0.9.9
Remedy:
Upgrade to the latest version of PulseAudio (0.9.9 or later), available from the PulseAudio Web site. See References.
Consequences:
Gain Privileges
References:
- PulseAudio Web site, PulseAudio - Trac at http://www.pulseaudio.org/.
- BID-27449: PulseAudio Local Privilege Escalation Vulnerability
- CVE-2008-0008: The pa_drop_root function in PulseAudio 0.9.8, and a certain 0.9.9 build, does not check return values from (1) setresuid, (2) setreuid, (3) setuid, and (4) seteuid calls when attempting to drop privileges, which might allow local users to gain privileges by causing those calls to fail via attacks such as resource exhaustion.
- DSA-1476: pulseaudio -- programming error
- GLSA-200802-07: Pulseaudio: Privilege escalation
- MDVSA-2008:027: Updated pulseaudio packages fix local root vulnerability
- USN-573-1: PulseAudio vulnerability
- VUPEN/ADV-2008-0283: PulseAudio pa_drop_root() Function Privilege Escalation Vulnerability
Reported:
Jan 24, 2008
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