VDB-87951 · CVE-2016-3236 · MS16-077

Microsoft Windows Vista SP2 up to Server 2012 R2 WPAD data processing

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System). This affects an unknown part of the component WPAD. The manipulation with an unknown input leads to a remote code execution vulnerability. CWE is classifying the issue as CWE-19. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 06/14/2016 as MS16-077 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2016-3236 since 03/15/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

It is declared as highly functional. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 91605 (MS16-077: Security Update for WPAD (3165191)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91229 (Microsoft Web Proxy Auto Discovery (WPAD) Elevation of Privilege Vulnerability (MS16-077)).

Applying the patch MS16-077 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91605). Entries connected to this vulnerability are available at 87950 and 90713.

Productinfoedit

Type

Operating System

Vendor

Microsoft

Name

Windows

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2infoedit

AV	AC	Au	C	I	A
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfoedit

Class: Remote Code Execution
CWE: CWE-19
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 91605
Nessus Name: MS16-077: Security Update for WPAD (3165191)
Nessus File: 🔍
Nessus Family: 🔍

OpenVAS ID: 65550
OpenVAS Name: Microsoft Web Proxy Auto Discovery (WPAD) Privilege Elevation Vulnerabilities (3165191)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: netbios_spoof_nat.rb
MetaSploit Name: NetBIOS Response BadTunnel Brute Force Spoof (NAT Tunnel)
MetaSploit File: 🔍