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TITLE:
Microsoft Exchange Server Outlook Web Access Script Insertion

SECUNIA ADVISORY ID:
SA20634

VERIFY ADVISORY:
http://secunia.com/advisories/20634/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Microsoft Exchange Server 2003
http://secunia.com/product/1828/
Microsoft Exchange Server 2000
http://secunia.com/product/41/

DESCRIPTION:
A vulnerability has been reported in Microsoft Exchange Server, which
can be exploited by malicious people to conduct script insertion
attacks.

The vulnerability is caused due to an error within the Microsoft
Outlook Web Access (OWA) service when filtering scripts in e-mail
messages. This can be exploited to insert arbitrary HTML and script
code, which is executed in a user's browser session in context of an
affected site when a malicious e-mail message is viewed.

SOLUTION:
Apply patches.

Microsoft Exchange 2000 with Post-Service Pack 3 Update Rollup of
August 2004:
http://www.microsoft.com/downloads/details.aspx?FamilyId=746CE64E-3186-422B-A13B-004E7942189B

Microsoft Exchange Server 2003 SP1:
http://www.microsoft.com/downloads/details.aspx?FamilyId=0E192781-847F-41C1-B32A-84218DB60942

Microsoft Exchange Server 2003 SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=C777BC9F-52B7-4F17-96C7-DAF3B9987D70

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Daniel Fabian, SEC Consult.

ORIGINAL ADVISORY:
MS06-029 (KB912442):
http://www.microsoft.com/technet/security/Bulletin/MS06-029.mspx

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