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Vigil@nce: SharePoint, Cross Site Scripting

October 2010 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/

SYNTHESIS OF THE VULNERABILITY

An attacker can inject script code in a SharePoint site using the SafeHTML method to filter data.

- Severity: 2/4
- Creation date: 13/10/2010

DESCRIPTION OF THE VULNERABILITY

The SafeHTML method filters data. It is for example used to suppress JavaScript code contained in data submitted by web clients, before displaying it on the web site. However, two vulnerabilities impact SafeHTML, so this filtering is useless.

The SafeHTML method does not correctly filter HTML pages, so an attacker can generate a Cross Site Scripting. [severity:2/4; CVE-2010-3243]

The SafeHTML method does not correctly filter HTML pages, so an attacker can generate a Cross Site Scripting. [severity:2/4; CVE-2010-3324]

An attacker can therefore inject script code in a SharePoint site using the SafeHTML method to filter data.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/S...




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