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Quake3 Engine "remapShader" Buffer Overflow and Directory Traversal
Secunia Advisory: SA19984
Release Date: 2006-05-05
Last Update: 2006-05-10
Popularity: 10,006 views

Critical:
Moderately critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Quake3 Engine 1.x

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CVE reference:CVE-2006-2082
CVE-2006-2236


Description:
Two vulnerabilities have been reported in the Quake3 Engine, which can be exploited by malicious people to access arbitrary files on a vulnerable system and potentially to compromise a user's system.

1) A boundary error exists within the handling of the "remapShader" command. This can be exploited to cause a buffer overflow via specially crafted "remapShader" commands sent to a client.

Successful exploitation may allow arbitrary code execution, but requires that the user is e.g. tricked into connecting to a malicious game server.

The vulnerability has been reported in the following software:
* Quake III Arena 1.32b.
* Return to Castle Wolfenstein 1.41.
* Wolfenstein: Enemy Territory 2.60.

Other versions may also be affected.

2) An input validation error exists within the processing of ".pk3" file download requests from a client. This can be to download arbitrary files accessible to the server process via directory traversal attacks.

The vulnerability has been reported in the following software:
* Quake III Arena / Team Arena
* Return to Castle Wolfenstein
* Wolfenstein: Enemy Territory
* Star Trek Voyager: Elite Force

Other versions may also be affected.

Solution:
Update to the fixed versions.
http://www.idsoftware.com/

Quake III Arena:
Update to version 1.32c.

Return to Castle Wolfenstein:
Update to version 1.41b.

Wolfenstein: Enemy Territory:
Update to version 2.60b.

Provided and/or discovered by:
1) landser
2) Thilo Schulz and Ludwig Nussel

Changelog:
2006-05-09: Added information of additional vulnerability. Updated "Solution Status", "Description", "Solution" and credit sections.
2006-05-10: Added CVE reference.

Original Advisory:
http://www.milw0rm.com/exploits/1750


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