From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Jul 04 2006 - 06:02:04 CDT

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Reverse Engineer Wanted

Secunia offers a Security Specialist position with emphasis on
reverse engineering of software and exploit code, auditing of
source code, and analysis of vulnerability reports.

http://secunia.com/secunia_security_specialist/

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TITLE:
Quake 3 Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA20946

VERIFY ADVISORY:
http://secunia.com/advisories/20946/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
From remote

SOFTWARE:
Quake3 Engine 3.x
http://secunia.com/product/4653/

DESCRIPTION:
RunningBon has reported two vulnerabilities in the Quake 3 Engine,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially compromise a user's system.

1) A boundary error exist in the "CG_ServerCommand()" function when
receiving long server commands. This can be exploited to cause a
stack-based buffer overflow via overly long server commands sent from
the server.

Successful exploitation may allow arbitrary code execution, but
requires that the user is e.g. tricked into connecting to a malicious
server.

2) A boundary error exists in the handling of CS_ITEMs sent from a
server. This can be exploited to cause a stack-based buffer overflow
by sending overly long values to the client.

Successful exploitation may allow arbitrary code execution, but
requires that the user is e.g. tricked into connecting to a malicious
server.

SOLUTION:
Only connect to trusted servers.

PROVIDED AND/OR DISCOVERED BY:
RunningBon

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/1976
http://milw0rm.com/exploits/1977

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