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Warrior Kings: Battles Fromat String
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SUMMARY
Warrior Kings: Battles is "a real-time strategy game developed by Black
Cactus (http://www.blackcactus.co.uk) and released in March 2003. The game
is published by Empire Interactive and Strategy First. Warrior Kings
instead is published by Microids and Empire Interactive and has been
released exactly one year before its successor".
A format string vulnerability exists in Warrior Kings and its successor
Warrior Kings: Battles, exploiting this vulnerability allows arbitrary
code execution on vulnerable game server.
DETAILS
Vulnerable Systems:
* Warrior Kings: Battles version 1.23 and prior
* Warrior Kings version 1.3 and prior
The game is affected by a format string bug in the function used to
visualize the text on the screen. The best and simplest way to exploit the
bug is through a malformed nickname. The only limitation is that the
attacker cannot exploit the bug if the server is locked.
A partial join packet causes the crash of the server due to the access to
a NULL pointer. Only Warrior Kings Battles seems affected by this problem.
Proof of concepts:
<http://aluigi.altervista.org/poc/wkbbugs.zip>
http://aluigi.altervista.org/poc/wkbbugs.zip
<http://aluigi.altervista.org/poc/warkingsfs.zip>
http://aluigi.altervista.org/poc/warkingsfs.zip
ADDITIONAL INFORMATION
The information has been provided by <mailto:aluigi@autistici.org> Luigi
Auriemma.
The original article can be found at: <http://aluigi.altervista.org>
http://aluigi.altervista.org
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