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Crossfire server: Denial of Service and potential arbitrary code execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200604-11 / Crossfire
Release Date April 22, 2006
Latest Revision April 22, 2006: 01
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
games-server/crossfire-server < 1.9.0 >= 1.9.0 All supported architectures

Related bugreports: #126169


The Crossfire game server is vulnerable to a Denial of Service and potentially to the execution of arbitrary code.

2.  Impact Information


Crossfire is a cooperative multiplayer graphical adventure and role-playing game. The Crossfire game server allows various compatible clients to connect to participate in a cooperative game.


Luigi Auriemma discovered a vulnerability in the Crossfire game server, in the handling of the "oldsocketmode" option when processing overly large requests.


An attacker can set up a malicious Crossfire client that would send a large request in "oldsocketmode", resulting in a Denial of Service on the Crossfire server and potentially in the execution of arbitrary code on the server with the rights of the game server.

3.  Resolution Information


There is no known workaround at this time.


All Crossfire server users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=games-server/crossfire-server-1.9.0"

4.  References


Page updated April 22, 2006

Summary: This is a Gentoo Linux Security Advisory

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