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Category:   Application (Generic)  >   Microsoft SharePoint Vendors:   Microsoft
Microsoft SharePoint Lets Remote Users Bypass ACP Restrictions on the Target System
SecurityTracker Alert ID:  1034653
SecurityTracker URL:  http://securitytracker.com/id/1034653
CVE Reference:   CVE-2015-6117, CVE-2016-0011   (Links to External Site)
Date:  Jan 12 2016
Impact:   Disclosure of user information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2013 SP1
Description:   Two vulnerabilities were reported in Microsoft SharePoint. A remote user can bypass security controls on the target system.

The Access Control Policy (ACP) configuration settings are not properly enforced [CVE-2015-6117, CVE-2016-0011]. A remote user can create and add a specially crafted script to a webpart that, when loaded by the target user, will bypass ACP policy to access potentially sensitive information or take actions on the target SharePoint site acting as the target user.

Jonas Nilsson of Disruptive Innovations AB reported one of these vulnerabilities.

Impact:   A remote user can bypass ACP security controls on the target system.
Solution:   The vendor has issued a fix.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms16-004

Vendor URL:  technet.microsoft.com/library/security/ms16-004 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2008), Windows (2012)

Message History:   None.


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