[ GLSA 200407-14 ] Unreal Tournament 2003/2004: Buffer overflow in 'secure' queries

[GLSA]

Gentoo Linux Security Advisory

Title: Unreal Tournament 2003/2004: Buffer overflow in 'secure' queries (GLSA 200407-14)
Severity: high
Exploitable: remote
Date: July 19, 2004
Bug(s): #54726
ID: 200407-14

Synopsis


Game servers based on the Unreal engine are vulnerable to remote code
execution through malformed 'secure' queries.


Background


Unreal Tournament 2003 and 2004 are popular first-person-shooter games.
They are both based on the Unreal engine, and can be used in a game server
/ client setup.


Affected Packages

Package: games-fps/ut2003
Vulnerable: <= 2225-r2
Unaffected: >= 2225-r3
Architectures: All supported architectures

Package: games-server/ut2003-ded
Vulnerable: <= 2225-r1
Unaffected: >= 2225-r2
Architectures: All supported architectures

Package: games-fps/ut2004
Vulnerable: < 3236
Unaffected: >= 3236
Architectures: All supported architectures

Package: games-fps/ut2004-demo
Vulnerable: <= 3120-r3
Unaffected: >= 3120-r4
Architectures: All supported architectures


Description


The Unreal-based game servers support a specific type of query called
'secure'. Part of the Gamespy protocol, this query is used to ask if the
game server is able to calculate an exact response using a provided string.
Luigi Auriemma found that sending a long 'secure' query triggers a buffer
overflow in the game server.


Impact


By sending a malicious UDP-based 'secure' query, an attacker could execute
arbitrary code on the game server.


Workaround


Users can avoid this vulnerability by not using Unreal Tournament to host
games as a server. All users running a server should upgrade to the latest
versions.


Resolution


All Unreal Tournament users should upgrade to the latest available
versions: