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Vigil@nce: HP Tru64 UNIX, privilege elevation via AdvFS

November 2008 by Vigil@nce

A local attacker can use AdvFS in order to elevate his privileges.

 Gravity: 2/4
 Consequences: administrator access/rights, privileged access/rights
 Provenance: user shell
 Means of attack: no proof of concept, no attack
 Ability of attacker: expert (4/4)
 Confidence: confirmed by the editor (5/5)
 Diffusion of the vulnerable configuration: high (3/3)
 Creation date: 07/11/2008

IMPACTED PRODUCTS

 Hewlett-Packard Tru64 UNIX

DESCRIPTION

The AdvFS filesystem can be installed as an option under Tru64
UNIX. The /usr/sbin/showfile command displays the attributes of an
AdvFS file.

A local attacker can use showfile to elevate his privileges.
Technical details are unknown.

This vulnerability may be related to a buffer overflow occurring
in this suid/sgid command.

CHARACTERISTICS

 Identifiers: BID-32160, c01599842, CVE-2008-4414, HPSBTU02383,
SSRT080098, VIGILANCE-VUL-8228
 Url: http://vigilance.fr/vulnerability/8228


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