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TITLE:
Microsoft Outlook Web Access Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA15697

VERIFY ADVISORY:
http://secunia.com/advisories/15697/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Microsoft Exchange 5.5
http://secunia.com/product/148/

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

The vulnerability is caused due to insufficient validation of HTML
messages in Outlook Web Access. This can be exploited to execute
arbitrary HTML and script code in a user's browser session in context
of a vulnerable site when a specially crafted message is viewed.

SOLUTION:
Apply patch.

Microsoft Exchange Server 5.5 (requires Service Pack 4):
http://www.microsoft.com/downloads/details.aspx?familyid=08435B77-9F3A-40F5-B13A-A7019CB1C244

PROVIDED AND/OR DISCOVERED BY:
Gaël Delalleau

ORIGINAL ADVISORY:
MS05-029 (KB895179):
http://www.microsoft.com/technet/security/bulletin/ms05-029.mspx

iDEFENSE:
http://idefense.com/application/poi/display?id=261&type=vulnerabilities

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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
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
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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