Advisories, March 29, 2006Mar 30, 2006, 04:45 (0 Talkback[s])
Gentoo Linux Security Advisory GLSA 200603-26
tetris-bsd is prone to local privilege escalation vulnerabilities.
bsd-games is a collection of NetBSD games ported to Linux.
Package / Vulnerable / Unaffected
1 games-misc/bsd-games < 2.17-r1 >= 2.17-r1
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.
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.
Do not add untrusted users to the "games" group.
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"
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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 firstname.lastname@example.org or alternatively, you may file a bug at http://bugs.gentoo.org.
Copyright 2006 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
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