Crossfire server: Denial of Service and potential arbitrary code execution

1.  Gentoo Linux Security Advisory

Version Information

Related bugreports: #126169

Synopsis

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

2.  Impact Information

Background

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.

Description

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

Impact

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

Workaround

There is no known workaround at this time.

Resolution

All Crossfire server users should upgrade to the latest version:

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

4.  References

• CVE-2006-1010