Vulnerability Note VU#970915
Quake II Server performs console variable expansion on client-supplied input values
The Quake II Server contains an information leakage vulnerability that allows remote attackers to gain control of the game server process.
The Quake II Server responds to console commands from Quake II clients to perform a variety of game and server management functions. Both the server and client store configuration and status information in console variables (cvars) that are accessed using a syntax of "$name", where "name" is the name of the console variable to be expanded.
In normal operation, users interact with a client console application to issue commands to the server. If the user types a command containing the string "$rcon_password", the client console will include the value of a local variable named "rcon_password" in the command string.
Attackers can obtain authentication information from affected servers, resulting in compromise of the game server process.
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Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|Id Software||Unknown||23 May 2002||23 May 2002|
CVSS Metrics (Learn More)
The CERT/CC thanks Richard Stanway for his assistance in researching this vulnerability.
This document was written by Jeffrey P. Lanza.
- CVE IDs: Unknown
- Date Public: 08 Mar 2002
- Date First Published: 29 May 2002
- Date Last Updated: 29 May 2002
- Severity Metric: 16.87
- Document Revision: 24
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