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

High Nessus Plugin ID 92823


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: $Revision: 1.8 $

Type: local

Agent: windows

Published: 2016/08/09

Modified: 2017/07/12

Dependencies: 57033, 13855, 93962

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C


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: CVSS:3.0/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: 2016/08/09

Vulnerability Publication Date: 2016/08/09

Reference Information

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

BID: 92290, 92296

OSVDB: 142732, 142736

MSFT: MS16-101

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

IAVA: 2016-A-0207

EDB-ID: 40409