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TITLE:
Unreal Engine Web Server Logging Denial of Service

SECUNIA ADVISORY ID:
SA26506

VERIFY ADVISORY:
http://secunia.com/advisories/26506/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Unreal Engine
http://secunia.com/product/1042/

DESCRIPTION:
Luigi Auriemma has reported a vulnerability in the Unreal Engine,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to a boundary error within the
logging function of the Unreal Engine, which can be exploited to
crash the server by e.g. sending specially crafted data through the
built in web server (port 80, not enabled by default).

It is also reported that it is possible to slow a game server running
on a Windows system and annoy the game host by sending bell characters
(0x07) to the server.

SOLUTION:
Do not enable the built-in web server. Restrict access to trusted
persons only.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

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

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
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http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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