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Category:   Application (Game)  >   LuxMan Vendors:   McIngvale, Frank
(Debian Issues Fix) LuxMan Game Software File Path Bug May Let Local Users Gain Root Access on the System
SecurityTracker Alert ID:  1005549
SecurityTracker URL:  http://securitytracker.com/id/1005549
CVE Reference:   CVE-2002-1245   (Links to External Site)
Date:  Nov 6 2002
Impact:   Disclosure of authentication information, Disclosure of system information, Modification of authentication information, Modification of system information, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 0.41
Description:   A vulnerability was reported in the LuxMan game software. A local user can gain access to /dev/mem, potentially yielding root access.

iDEFENSE reported that the 'maped' process, which is configured with set user id (setuid) root privileges, contains a flaw. The code executes 'gzip' without specifying the full path to the executable. So, a local user can create a replacement gzip binary and modify the PATH environment variable to cause the maped process to execute the user's replacement gzip binary.

Exploiting this behavior, a local user can cause certain file operations to be performed with root privileges. A demonstration exploit transcript that duplicates /dev/mem to a readable temporary file is provided in the Source Message. This demonstration exploit shows how a local user might gain read or write access to critical memory contents. A local user could potentially view passwords or modify kernel memory to gain root privileges on the system.

Impact:   A remote user can cause certain file operations to be executed with root privileges. A remote user could gain read/write access to /dev/mem, potentially accessing critical memory contents that could lead to root access on the system.
Solution:   Debian has released a fix in version 0.41-17.1 the current stable distribution (woody) and in version 0.41-19 for the unstable distribution (sid). The old stable distribution (potato) does not contain a luxman package

For Debian GNU/Linux 3.0 alias woody:

This package is only available for the IA-32 architecture.

Source archives:

http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1.dsc
Size/MD5 checksum: 570 6f07d15342abd605028d3cfde3dd1e6a
http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1.diff.gz
Size/MD5 checksum: 6955 0ede91f130be23bd67383f47e6b51ccb
http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41.orig.tar.gz
Size/MD5 checksum: 268279 aa389327578e2d65f3f5035193e407cb

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1_i386.deb
Size/MD5 checksum: 290680 e9aa37d421068e828307ef5c816ad72d

Vendor URL:  packages.debian.org/stable/games/luxman.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Debian)
Underlying OS Comments:  3.0

Message History:   This archive entry is a follow-up to the message listed below.
Nov 6 2002 LuxMan Game Software File Path Bug May Let Local Users Gain Root Access on the System



 Source Message Contents

Subject:  [SECURITY] [DSA 189-1] New luxman packages fix local root exploit


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- --------------------------------------------------------------------------
Debian Security Advisory DSA 189-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
November 6th, 2002                      http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : luxman
Vulnerability  : local root exploit
Problem-Type   : local
Debian-specific: yes
CVE Id         : CAN-2002-1245

iDEFENSE reported about a vulnerability in LuxMan, a maze game for
GNU/Linux, similar to the PacMan arcade game.  When successfully
exploited it a local attacker with read write access to the Memory,
leading to a local root compromise in many ways, examples of which
include scanning the file for fragments of the master password file
and modifying kernel memory to re-map system calls.

This problem has been fixed in version 0.41-17.1 the current stable
distribution (woody) and in version 0.41-19 for the unstable
distribution (sid).  The old stable distribution (potato) is not
affected since it doesn't contain a luxman package

We recommend that you upgrade your luxman package immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.0 alias woody
- --------------------------------

  This package is only available for the IA-32 architecture.

  Source archives:

    http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1.dsc
      Size/MD5 checksum:      570 6f07d15342abd605028d3cfde3dd1e6a
    http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1.diff.gz
      Size/MD5 checksum:     6955 0ede91f130be23bd67383f47e6b51ccb
    http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41.orig.tar.gz
      Size/MD5 checksum:   268279 aa389327578e2d65f3f5035193e407cb

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/l/luxman/luxman_0.41-17.1_i386.deb
      Size/MD5 checksum:   290680 e9aa37d421068e828307ef5c816ad72d


  These files will probably be moved into the stable distribution on
  its next revision.

- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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Version: GnuPG v1.0.7 (GNU/Linux)

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=kQKJ
-----END PGP SIGNATURE-----


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