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TITLE:
RealWin INFOTAG/SET_CONTROL Packet Processing Buffer Overflow

SECUNIA ADVISORY ID:
SA32055

VERIFY ADVISORY:
http://secunia.com/advisories/32055/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
RealWin 2.x
http://secunia.com/advisories/product/19990/

DESCRIPTION:
Ruben Santamarta has discovered a vulnerability in RealWin, 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 TCP packets received on port 910 by default. This can be exploited
to cause a stack-based buffer overflow via an overly large
INFOTAG/SET_CONTROL packet.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in RealWin demo version 2.0 (build
6.0.10.37). Other versions may also be affected.

SOLUTION:
Restrict network access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Ruben Santamarta, Reversemode

ORIGINAL ADVISORY:
http://reversemode.com/index.php?option=com_content&task=view&id=55&Itemid=1

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