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Vulnerability Details : CVE-2016-3213

The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold and 1511, and Internet Explorer 9 through 11 has an improper fallback mechanism, which allows remote attackers to gain privileges via NetBIOS name responses, aka "WPAD Elevation of Privilege Vulnerability."
Publish Date : 2016-06-15 Last Update Date : 2018-10-12
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- CVSS Scores & Vulnerability Types

CVSS Score
9.3
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Gain privileges
CWE ID 264

- Products Affected By CVE-2016-3213

# Product Type Vendor Product Version Update Edition Language
1 Application Microsoft Internet Explorer 9 Version Details Vulnerabilities
2 Application Microsoft Internet Explorer 10 Version Details Vulnerabilities
3 Application Microsoft Internet Explorer 11 Version Details Vulnerabilities
4 OS Microsoft Windows 10 - Version Details Vulnerabilities
5 OS Microsoft Windows 10 1511 Version Details Vulnerabilities
6 OS Microsoft Windows 7 SP1 Version Details Vulnerabilities
7 OS Microsoft Windows 8.1 Version Details Vulnerabilities
8 OS Microsoft Windows Rt 8.1 Version Details Vulnerabilities
9 OS Microsoft Windows Server 2008 SP2 Version Details Vulnerabilities
10 OS Microsoft Windows Server 2008 R2 SP1 Version Details Vulnerabilities
11 OS Microsoft Windows Server 2012 - Version Details Vulnerabilities
12 OS Microsoft Windows Server 2012 R2 Version Details Vulnerabilities
13 OS Microsoft Windows Vista SP2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Internet Explorer 3
Microsoft Windows 10 2
Microsoft Windows 7 1
Microsoft Windows 8.1 1
Microsoft Windows Rt 8.1 1
Microsoft Windows Server 2008 2
Microsoft Windows Server 2012 2
Microsoft Windows Vista 1

- References For CVE-2016-3213

http://www.securitytracker.com/id/1036104
SECTRACK 1036104
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-063
MS MS16-063
http://www.securitytracker.com/id/1036096
SECTRACK 1036096
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-077
MS MS16-077

- Metasploit Modules Related To CVE-2016-3213

NetBIOS Response "BadTunnel" Brute Force Spoof (NAT Tunnel)
This module listens for a NetBIOS name request and then continuously spams NetBIOS responses to a target for given hostname, causing the target to cache a malicious address for this name. On high-speed networks, the PPSRATE value should be increased to speed up this attack. As an example, a value of around 30,000 is almost 100% successful when spoofing a response for a 'WPAD' lookup. Distant targets may require more time and lower rates for a successful attack. This module works when the target is behind a NAT gateway, since the stream of NetBIOS responses will keep the NAT mapping alive after the initial setup. To trigger the initial NetBIOS request to the Metasploit system, force the target to access a UNC link pointing to the same address (HTML, Office attachment, etc). This NAT-piercing issue was named the 'BadTunnel' vulnerability by the discoverer, Yu Yang (@tombkeeper). The Microsoft patches (MS16-063/MS16-077) impact the way that the proxy host (WPAD) host is identified, but do change the predictability of NetBIOS requests.
Module type : auxiliary Rank : normal


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