Microsoft Exchange Critical Vulnerability Jan 10 2006 10:49PM
NGSSoftware Insight Security Research (mark ngssoftware com)
John Heasman and Mark Litchfield of NGSSoftware have discovered a critical
vulnerability
affecting Microsoft Exchange. The vulnerable versions include:

Microsoft Exchange Server 5.0 Service Pack 2
Microsoft Exchange Server 5.5 Service Pack 4
Microsoft Exchange 2000 Server Pack 3 with the Post-Service Pack 3 Update
Rollup of August 2004

Microsoft Exchange Server 2003 Service Pack 1 and Microsoft Exchange Server
2003 Service Pack 2
are *not* affected.

The vulnerability potentially allows execution of arbitrary code when the
Microsoft
Exchange Server Information Store processes a specially crafted email
message.

The flaw has now been addressed and patches are available from:

http://www.microsoft.com/technet/security/Bulletin/MS06-003.mspx

NGSSoftware are going to withhold details of this flaw for three months.
Full details will
be published on the 10th April 2006. This three month window will allow
system
administrators the time needed to obtain the patch before the details are
released to the
general public. This reflects NGSSoftware's approach to responsible
disclosure.

http://www.ngssoftware.com/disclosure.pdf

NGSSoftware Insight Security Research
http://www.ngssoftware.com
http://www.databasesecurity.com/
http://www.nextgenss.com/
+44(0)208 401 0070

Mark Litchfield
www.ngssoftware.com
Tel: +44 208 40 100 70
Fax: +44 208 40 100 76
Cell: +1 253 414 4749

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