1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200603-26 / bsd-games |
| Release Date | March 29, 2006 |
| Latest Revision | May 22, 2006: 02 |
| Impact | normal |
| Exploitable | local |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| games-misc/bsd-games | < 2.17-r1 | >= 2.17-r1 | All supported architectures |
Related bugreports: #122399
tetris-bsd is prone to local privilege escalation vulnerabilities.
bsd-games is a collection of NetBSD games ported to Linux.
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:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=games-misc/bsd-games-2.17-r1" |