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Microsoft SharePoint Server 2007 XSS
XSS in Microsoft SharePoint Server 2007
XSS in Microsoft SharePoint Server 2007

Vulnerability ID: HTB22350
Product: Microsoft SharePoint Server 2007
Vendor: Microsoft Corporation
Vulnerable Version: and Probably Prior Versions
Vendor Notification: 12 April 2010 
Vulnerability Type: XSS (Сross Site Sсriрting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium 
Credit: High-Tech Bridge SA ( 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application. 

The vulnerability exists due to failure in the "/_layouts/help.aspx" script to properly sanitize user-supplied input in "cid0" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.

An attacker can use browser to exploit this vulnerability. The following PoC is available: 


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