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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows WPAD Proxy Discovery Bugs Let Remote Users Gain Elevated Privileges
SecurityTracker Alert ID:  1036104
SecurityTracker URL:
CVE Reference:   CVE-2016-3213, CVE-2016-3236, CVE-2016-3299   (Links to External Site)
Updated:  Aug 9 2016
Original Entry Date:  Jun 14 2016
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Vista SP2, 2008 SP2, 7 SP1, 2008 R2 SP1, 8.1, 2012, 2012 R2, RT 8.1, 10, 10 Version 1511; and prior service packs
Description:   Three vulnerabilities were reported in Microsoft Windows. A remote user can gain elevated privileges.

A remote user on the local network can return specially crafted NetBIOS responses to trigger a flaw in the the Web Proxy Auto Discovery (WPAD) protocol implementation and gain elevated privileges on the target system [CVE-2016-3213].

A remote user on the local network can exploit a flaw in the processing of certain proxy discovery scenarios via WPAD to access and control network traffic [CVE-2016-3236].

A remote user can spoof NetBIOS messages to hijack network traffic or cause untrusted content to be rendered in a browser outside of Enhanced Protected Mode (EPM) or an application container [CVE-2016-3299].

Moritz Jodeit of Blue Frost Security GmbH and Yu Yang (@tombkeeper) of Tencent's Xuanwu Lab reported these vulnerabilities.

Impact:   A remote user can gain elevated privileges on the target system.
Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor advisory.

The Microsoft advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents

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