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TITLE:
PRISM Guard Shield Asura Engine Packet Handling Buffer Overflow

SECUNIA ADVISORY ID:
SA24023

VERIFY ADVISORY:
http://secunia.com/advisories/24023/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
PRISM Guard Shield 1.x
http://secunia.com/product/15430/

DESCRIPTION:
Luigi Auriemma has discovered a vulnerability in PRISM Guard Shield,
which can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error in the processing
of network packets by the included Asura engine when PRISM Guard
Shield runs as a server. This can be exploited to cause a stack-based
buffer overflow via a specially crafted packet with a type of "0xF007"
sent to the vulnerable server (default port 3658/udp).

The vulnerability is confirmed in PRISM Guard Shield version 1.1.2.3
and is reported in version 1.1.1.0. Other versions may also be
affected.

SOLUTION:
Use PRISM Guard Shield as a multiplayer server only in a trusted
network environment.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/asurabof-adv.txt

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About:
This Advisory was delivered by Secunia as a free service to help
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