MS16-101: Security Update for Windows Authentication Methods (3178465)

high Nessus Plugin ID 92823
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Windows host is affected by multiple vulnerabilities.


The remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities :

- A security downgrade vulnerability exists in Kerberos due to improper handling of password change requests.
A man-in-the-middle attacker can exploit this to cause the authentication protocol to fall back to the NT LAN Manager (NTLM) authentication protocol, resulting in a bypass of Kerberos authentication. (CVE-2016-3237)

- An elevation of privilege vulnerability exists in Windows Netlogon due to a failure to properly establish secure communications to a domain controller. A local attacker who has access to a domain-joined machine that points to a domain controller running either Windows Server 2012 or 2012 R2 can exploit this vulnerability to gain elevated privileges via a specially crafted application. (CVE-2016-3300)


Microsoft has released a set of patches for Windows Vista, 2008, 7, 2008 R2, 2012, 8.1, RT 8.1, 2012 R2, and 10.

See Also

Plugin Details

Severity: High

ID: 92823

File Name: smb_nt_ms16-101.nasl

Version: 1.10

Type: local

Agent: windows

Published: 8/9/2016

Updated: 11/15/2018

Dependencies: smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl, smb_check_rollup.nasl

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:POC/RL:OF/RC:C


Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/9/2016

Vulnerability Publication Date: 8/9/2016

Reference Information

CVE: CVE-2016-3237, CVE-2016-3300

BID: 92290, 92296

MSFT: MS16-101

MSKB: 3167679, 3177108, 3192391, 3185330, 3192392, 3185331, 3192393, 3185332

IAVA: 2016-A-0207

EDB-ID: 40409