Half-Life Client Server Message Format String Vulnerability
Risk
High
Date Discovered
01-10-2003
Description
It has been reported that the Half-Life client contains a format string vulnerability. When receiving messages from an administrator through the adminmod add-on package, the client does not properly handle input. This could result in denial of service, or code execution.
Platforms Affected
Microsoft Windows 98
Microsoft Windows 98 a
Microsoft Windows 98 b
Microsoft Windows 98 SP1
Microsoft Windows 98SE
Microsoft Windows NT 4.0
Microsoft Windows NT 4.0 SP1
Microsoft Windows NT 4.0 SP2
Microsoft Windows NT 4.0 SP3
Microsoft Windows NT 4.0 SP4
Microsoft Windows NT 4.0 SP5
Microsoft Windows NT 4.0 SP6
Microsoft Windows NT 4.0 SP6a
Components Affected
Valve Software Half-Life 1.1 .0.9
Valve Software Half-Life 1.1 .0.8
Valve Software Half-Life 1.1.1 .0
Recommendations
Run all client software as a non-privileged user with minimal access rights.
Do not execute Half-Life client software as a privileged user.
Do not use client software to access unknown or untrusted hosts from critical systems.
Do not connect to unknown or untrusted Half-Life clients.
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com .
Valve Software Half-Life 1.1 .0.9:
Valve Software Half-Life 1.1 .0.8:
Valve Software Half-Life 1.1.1 .0:
References
Source: [VSA0304] Half-Life Client remote hole via Adminmod plugin
URL: msg://bugtraq/3E1F07AF.6090701@void.at
Source: Re: [VSA0304] Half-Life Client remote hole via Adminmod plugin
URL: msg://bugtraq/102-1439168865.20030111134026@SECURITY.NNOV.RU
Credits
Vulnerability discovery credited to "VOID.AT Security" <crew@void.at>.
Copyright (c) 2003 by Symantec Corp.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from symsecurity@symantec.com.
Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and SymSecurity are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.
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