CVE-2002-0770

Quake 2 Server <3.21 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2002-0770. PoCs published by Redix.

AI-analyzed exploit summary The vulnerability in Quake II servers allows a modified client to pass unexpanded variables (e.g., $rcon_password) to the server, which then expands them in its local context, potentially leaking sensitive information. The provided code snippet suggests a client-side modification to exploit this behavior.

Description

Quake 2 (Q2) server 3.20 and 3.21 allows remote attackers to obtain sensitive server cvar variables, obtain directory listings, and execute Q2 server admin commands via a client that does not expand "$" macros, which causes the server to expand the macros and leak the information, as demonstrated using "say $rcon_password."

Exploits (1)

exploitdb WRITEUP VERIFIED
by Redix · textremotemultiple
https://www.exploit-db.com/exploits/21450

The vulnerability in Quake II servers allows a modified client to pass unexpanded variables (e.g., $rcon_password) to the server, which then expands them in its local context, potentially leaking sensitive information. The provided code snippet suggests a client-side modification to exploit this behavior.

Classification
Writeup 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Quake II server
No auth needed
Prerequisites: Modified Quake II client with the suggested code change
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

References (6)

Core 6
Core References
Vendor Advisory vdb-entry x_refsource_xf
http://www.iss.net/security_center/static/9095.php
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://online.securityfocus.com/archive/1/272548
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/970915
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/11187
Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/4744

Scores

EPSS 0.0553
EPSS Percentile 91.9%

Details

Status published
Products (2)
id_software/quake_2i_server 3.20
id_software/quake_2i_server 3.21
Published Aug 12, 2002
Tracked Since Feb 18, 2026