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TITLE:
Microsoft Windows SMB Response Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA37347

VERIFY ADVISORY:
http://secunia.com/advisories/37347/

DESCRIPTION:
Laurent Gaffié has discovered a vulnerability in Microsoft Windows,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error when processing SMB
packets received from an SMB server. This can be exploited to hang an
affected system by tricking a user into connecting to a malicious SMB
server via e.g. a specially crafted web site opened in Internet
Explorer.

The vulnerability is confirmed on a fully patched Microsoft Windows 7
and reported in Microsoft Windows Server 2008 R2.

SOLUTION:
Block outbound connections to untrusted SMB servers via a firewall.

PROVIDED AND/OR DISCOVERED BY:
Laurent Gaffié

ORIGINAL ADVISORY:
http://g-laurent.blogspot.com/2009/11/windows-7-server-2008r2-remote-kernel.html

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