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Category:   Application (Game)  >   LTris Vendors:   lgames.sourceforge.net
(Gentoo Issues Fix) LTris Buffer Overflow in Processing Highscores File May Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1013489
SecurityTracker URL:  http://securitytracker.com/id/1013489
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Mar 21 2005
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.0.9
Description:   A vulnerability was reported in the LTris game. A local user may be able to obtain elevated privileges.

A local user with access to the highscores file can modify the file. Then, when a target user loads the game, a buffer overflow will be triggered and arbitrary code will be executed with the privileges of the target user.

The flaw resides in 'chart.c'.

Impact:   A local user can cause arbitrary code to be executed with the privileges of the target user.
Solution:   Gentoo has issued a fix and indicates that all LTris users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=games-puzzle/ltris-1.0.10"

Vendor URL:  lgames.sourceforge.net/index.php?project=LTris (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Mar 19 2005 LTris Buffer Overflow in Processing Highscores File May Let Local Users Gain Elevated Privileges



 Source Message Contents

Subject:  [Full-disclosure] [ GLSA 200503-24 ] LTris: Buffer overflow


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Gentoo Linux Security Advisory                           GLSA 200503-24
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: LTris: Buffer overflow
      Date: March 20, 2005
      Bugs: #85770
        ID: 200503-24

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Synopsis
========

LTris is vulnerable to a buffer overflow which could lead to the
execution of arbitrary code.

Background
==========

LTris is a Tetris clone.

Affected packages
=================

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  games-puzzle/ltris      < 1.0.10                        >= 1.0.10

Description
===========

LTris is vulnerable to a buffer overflow when reading the global
highscores file.

Impact
======

By modifying the global highscores file a malicious user could trick
another user to execute arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All LTris users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=games-puzzle/ltris-1.0.10"

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200503-24.xml

Concerns?
=========

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
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
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