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Gentoo Linux Security Advisory GLSA 200603-23 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: NetHack, Slash'EM, Falcon's Eye: Local privilege escalation |
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Date: March 23, 2006 |
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Bugs: #125902, #122376, #127167, #127319 |
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ID: 200603-23 |
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Synopsis |
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======== |
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|
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NetHack, Slash'EM and Falcon's Eye are vulnerable to local privilege |
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escalation vulnerabilities that could potentially allow the execution |
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of arbitrary code as other users. |
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|
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Background |
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========== |
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|
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NetHack is the classic single player dungeon exploration game. Slash'EM |
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and Falcon's Eye are NetHack variants. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 games-roguelike/nethack <= 3.4.3-r1 Vulnerable! |
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2 games-roguelike/falconseye <= 1.9.4a Vulnerable! |
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3 games-roguelike/slashem <= 0.0.760 Vulnerable! |
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------------------------------------------------------------------- |
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NOTE: Certain packages are still vulnerable. Users should migrate |
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to another package if one is available or wait for the |
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existing packages to be marked stable by their |
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architecture maintainers. |
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------------------------------------------------------------------- |
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3 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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NetHack, Slash'EM and Falcon's Eye have been found to be incompatible |
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with the system used for managing games on Gentoo Linux. As a result, |
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they cannot be played securely on systems with multiple users. |
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|
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Impact |
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====== |
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|
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A local user who is a member of group "games" may be able to modify the |
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state data used by NetHack, Slash'EM or Falcon's Eye to trigger the |
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execution of arbitrary code with the privileges of other players. |
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Additionally, the games may create save game files in a manner not |
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suitable for use on Gentoo Linux, potentially allowing a local user to |
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create or overwrite files with the permissions of other players. |
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|
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Workaround |
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========== |
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|
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Do not add untrusted users to the "games" group. |
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|
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Resolution |
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========== |
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|
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NetHack has been masked in Portage pending the resolution of these |
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issues. Vulnerable NetHack users are advised to uninstall the package |
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until further notice. |
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|
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# emerge --ask --verbose --unmerge "games-roguelike/nethack" |
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|
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Slash'EM has been masked in Portage pending the resolution of these |
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issues. Vulnerable Slash'EM users are advised to uninstall the package |
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until further notice. |
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|
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# emerge --ask --verbose --unmerge "games-roguelike/slashem" |
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|
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Falcon's Eye has been masked in Portage pending the resolution of these |
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issues. Vulnerable Falcon's Eye users are advised to uninstall the |
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package until further notice. |
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# emerge --ask --verbose --unmerge "games-roguelike/falconseye" |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200603-23.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.0 |
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