GLSA-200603-26 : bsd-games: Local privilege escalation in tetris-bsd

This script is Copyright (C) 2006-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200603-26
(bsd-games: Local privilege escalation in tetris-bsd)

Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that
the checkscores() function in scores.c reads in the data from the
/var/games/tetris-bsd.scores file without validation, rendering it
vulnerable to buffer overflows and incompatible with the system used
for managing games on Gentoo Linux. As a result, it cannot be played
securely on systems with multiple users. Please note that this is
probably a Gentoo-specific issue.

Impact :

A local user who is a member of group 'games' may be able to modify the
tetris-bsd.scores file to trigger the execution of arbitrary code with
the privileges of other players.

Workaround :

Do not add untrusted users to the 'games' group.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200603-26.xml

Solution :

All bsd-games users are advised to update to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=games-misc/bsd-games-2.17-r1'

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 21166 (gentoo_GLSA-200603-26.nasl)

Bugtraq ID:

CVE ID: CVE-2006-1539