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Cross-site Scripting Vulnerability in Microsoft SharePoint Server 2007

Advisory ID:HTB22350
Product:Microsoft SharePoint Server 2007
Vendor:Microsoft Corporation
Vulnerable Versions: and probably prior
Tested Version:
Advisory Publication:April 12, 2010 [without technical details]
Vendor Notification:April 12, 2010
Public Disclosure:April 28, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
CVE Reference:CVE-2010-0817
Risk Level:Medium
CVSSv2 Base Score:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in Microsoft SharePoint Server 2007 which could be exploited to perform cross-site scripting attacks.

1) Cross-site scripting vulnerability in Microsoft SharePoint Server 2007: CVE-2010-0817
An input sanitation error was found in the "cid0" parameter in /_layouts/help.aspx. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.

Exploitation example:

http://host/_layouts/help.aspx?cid0=MS.WSS.manifest.xml%00%3Cscript%3Ealert% 28%27XSS%27%29%3C/script%3E&tid=X

How to Detect Cross-Site Scripting Vulnerabilities
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Install the MS10-039 patch.

More information:

[1] High-Tech Bridge Advisory HTB22350 - - XSS in Microsoft SharePoint Server 2007.
[2] SharePoint - - SharePoint collaboration software helps simplify business intelligence, content management, search, and sharing for intranet and internet sites.
[3] Common Vulnerabilities and Exposures (CVE) - - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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