Title: Quake Server Backdoor Vulnerability
Severity: HIGH
Description:
The Quake server has a feature where it allows administrators to remotely send commands to the Quake console with a password. However, it is possible to remotely bypass authentication.
In order for this to be exploited, the attacker would have to create a handcrafted udp packet with a header containing the rcon command and the password "tms" with a source IP coming from ID Software's Subnet. (192.246.40)
The Quake server does not require an open connection for sending the rcon packet. When this is exploited, no logs are reported of the rcon command being used.
This vulnerability is present in Quake 1, QuakeWorld, Quake 2, Quake 2 Linux and Quake 2 Solaris, all versions.
Affected Products:
- id Software Linux Quake II 3.13.0
- id Software Linux Quake II 3.14.0a
- id Software Linux QuakeWorld 2.1.0
- id Software Quake 1.9.0
- id Software Quake II 3.13.0
- id Software Quake II 3.14.0
- id Software QuakeWorld 2.0.0
- id Software QuakeWorld 2.1.0
- id Software Solaris Quake II 3.13.0
- id Software Solaris Quake II 3.14.0
References:
- David Wright: QuakeWorld and Quake 2 Backdoor
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