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Quake 2 Server Format String (Lithium II)
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SUMMARY
" <http://www.planetquake.com/lithium/> Lithium II is a very configurable
server-side deathmatch modification for Quake II." By crafting a special
nick name it is possible to cause a format string attack under Quake 2
Lithium.
DETAILS
Vulnerable Systems:
* Quake 2 Lithium II version 1.2
Quake 2 Lithium does not not filter the nick name that users selects for
themselves. Creating a nick name such as %999f%f%f%f%f allow real number
to overflow their range and cause a carry flag.
The format string is entered to the stuck as following:
004144A1 |. 68 E821AF00 PUSH QUAKE2.00AF21E8 ;
ASCII "0.000000 0.000000 0.000000"
The format string takes place when a user is been killed, and the server
caused an invalid page fault in module <unknown> at 0000:3030302e.
ADDITIONAL INFORMATION
The information has been provided by <mailto:nukemmeister@gmail.com>
sinNULL.
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