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Wednesday, October 10, 2007

[NT] World in Conflict NULL Pointer Crash

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World in Conflict NULL Pointer Crash
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SUMMARY

The World in Conflict server is vulneable to a Denial of Service attack
(crash) caused by the access to a NULL pointer. The problem happens in the
GetMagicNumberString function which takes the third byte of the data
received from the client on the VOIP port 52999 and returns a text string
if this value is valid ("ABC" for type 0, "DEF" for 1, "GHI" for 2 and so
on) or NULL if it's invalid. Then the string returned by this function is
compared with another one and here happens the NULL pointer access.

DETAILS

Vulnerable Systems:
* World in Conflict version 1.000 and prior

Immune Systems:
* World in Conflict version 1.00

Exploit:
Connect to the VOIP port of the server (default 52999) with telnet or
netcat and type something like aaaaaaa. The server will crash immediately.


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/adv/wicvoipnull-adv.txt>

http://aluigi.altervista.org/adv/wicvoipnull-adv.txt

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