Halo: Combat Evolved Off-by-One Error Lets Remote Deny Service
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SecurityTracker Alert ID: 1011202 |
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SecurityTracker URL: http://securitytracker.com/id/1011202
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Sep 9 2004
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes
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Version(s): 1.4 and prior versions
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Description:
Luigi Auriemma reported a denial of service vulnerability in the Halo: Combat Evolved game software. A remote user can cause the target server to crash.
It is reported that there is an off-by-one boundary error in the server in the processing of client response packets during the handshake. A remote user can send a value that is longer than 32 bytes to cause the game server to crash.
A demonstration exploit is available at:
http://aluigi.altervista.org/poc/haloboom.zip
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Impact:
A remote user can cause the game server to crash.
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Solution:
The vendor has issued a fix (Patch 1.05).
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Vendor URL: www.bungie.net/Games/HaloPC/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
MacOS, UNIX (OS X), Windows (Any)
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Message History:
None.
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Source Message Contents
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Date: Thu, 9 Sep 2004 20:05:51 +0000
Subject: Off-by-one bug in Halo 1.04
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#######################################################################
Luigi Auriemma
Application: Halo: Combat Evolved
http://www.bungie.net/Games/HaloPC/
Versions: <= 1.4
Platforms: Windows and MacOS
Bug: off-by-one (Denial of Service)
Risk: medium/high
Exploitation: remote, versus server
Date: 09 September 2004
Author: Luigi Auriemma
e-mail: aluigi@altervista.org
web: http://aluigi.altervista.org
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1) Introduction
2) Bug
3) The Code
4) Fix
#######################################################################
===============
1) Introduction
===============
Halo is the widely known game originally developed by Bungie Studios
and ported on PC by Gearbox Software (http://www.gearboxsoftware.com).
It has been released in September 2003.
#######################################################################
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2) Bug
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Halo uses the Gamespy SDK and moreover the handshake algorithm provided
in this library (http://aluigi.altervista.org/papers/gssdkcr.h) to let
players to join servers.
The off-by-one bug is located just in the client's response (the last
stage of this handshake) because if it is longer than 32 bytes causes
the immediate crash of the server.
#######################################################################
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3) The Code
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http://aluigi.altervista.org/poc/haloboom.zip
#######################################################################
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4) Fix
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Patch 1.05 for both Win32 and MacOS.
#######################################################################
---
Luigi Auriemma
http://aluigi.altervista.org
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