<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200603-26"> <title>bsd-games: Local privilege escalation in tetris-bsd</title> <synopsis> tetris-bsd is prone to local privilege escalation vulnerabilities. </synopsis> <product type="ebuild">bsd-games</product> <announced>March 29, 2006</announced> <revised>May 22, 2006: 02</revised> <bug>122399</bug> <access>local</access> <affected> <package name="games-misc/bsd-games" auto="yes" arch="*"> <unaffected range="ge">2.17-r1</unaffected> <vulnerable range="lt">2.17-r1</vulnerable> </package> </affected> <background> <p> bsd-games is a collection of NetBSD games ported to Linux. </p> </background> <description> <p> 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. </p> </description> <impact type="normal"> <p> 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. </p> </impact> <workaround> <p> Do not add untrusted users to the "games" group. </p> </workaround> <resolution> <p> All bsd-games users are advised to update to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=games-misc/bsd-games-2.17-r1"</code> </resolution> <references> <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1539">CVE-2006-1539</uri> </references> <metadata tag="requester" timestamp="Tue, 21 Mar 2006 19:50:34 +0000"> jaervosz </metadata> <metadata tag="submitter" timestamp="Mon, 27 Mar 2006 15:36:51 +0000"> DerCorny </metadata> <metadata tag="bugReady" timestamp="Tue, 28 Mar 2006 18:00:28 +0000"> DerCorny </metadata> </glsa>