bugtraq June 2008 archive
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bugtraq: Denial of Service in S.T.A.L.K.E.R. 1.0006

Denial of Service in S.T.A.L.K.E.R. 1.0006

From: Luigi Auriemma <aluigi_at_nospam>
Date: Sun Jun 15 2008 - 23:41:50 GMT
To: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk, packet@packetstormsecurity.org, cert@cert.org, news@securiteam.com

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Luigi Auriemma Application: S.T.A.L.K.E.R.: Shadow of Chernobyl http://www.stalker-game.com Versions: <= 1.0006 Platforms: Windows Bug: Denial of Service Exploitation: remote Date: 15 Jun 2008 Author: Luigi Auriemma e-mail: aluigi@autistici.org web: aluigi.org
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1) Introduction 2) Bug
3) The Code
4) Fix

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  1. Introduction

S.T.A.L.K.E.R. is a FPS game developed by GSC Game World (http://www.gsc-game.com) and released at the beginning of the 2007 (the Clear Sky sequel is planned for the next months).

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2) Bug

The server of this game can be easily terminated remotely through the usage of a nickname longer than 64 bytes which will reaise an exception.
If the server is protected by password the attacker must know the right keyword to exploit the vulnerability.
Although the server supports the banning of the IP addresses is possible to spoof packets and bypassing this limitation due to the lack of handshakes in the protocol of the game.

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3) The Code

http://aluigi.org/poc/stalkerboom.zip

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4) Fix

No fix

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Luigi Auriemma
http://aluigi.org