Vulnerabilities > CVE-2016-7237 - Improper Access Control vulnerability in Microsoft products
Attack vector
NETWORK Attack complexity
LOW Privileges required
SINGLE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
Local Security Authority Subsystem Service (LSASS) 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, 1511, and 1607, and Windows Server 2016 allows remote authenticated users to cause a denial of service (system hang) via a crafted request, aka "Local Security Authority Subsystem Service Denial of Service Vulnerability."
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Signature Spoofing by Key Theft An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Exploit-Db
| description | Microsoft Windows - LSASS SMB NTLM Exchange Null-Pointer Dereference (MS16-137). CVE-2016-7237. Dos exploit for Windows platform |
| file | exploits/windows/dos/40744.txt |
| id | EDB-ID:40744 |
| last seen | 2016-11-09 |
| modified | 2016-11-09 |
| platform | windows |
| port | |
| published | 2016-11-09 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/40744/ |
| title | Microsoft Windows - LSASS SMB NTLM Exchange Null-Pointer Dereference (MS16-137) |
| type | dos |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS16-137.NASL |
| description | The remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in Windows Virtual Secure Mode due to improper handling of objects in memory. An authenticated, remote attacker can exploit this, via a specially crafted application, to disclose sensitive information. (CVE-2016-7220) - A denial of service vulnerability exists in the Local Security Authority Subsystem Service (LSASS) when handling specially crafted requests. An authenticated, remote attacker can exploit this to cause the host to become non-responsive. (CVE-2016-7237) - An elevation of privilege vulnerability exists due to improper handling of NTLM password change requests. An authenticated, remote attacker can exploit this, via a specially crafted application, to gain administrative privileges. (CVE-2016-7238) |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 94638 |
| published | 2016-11-08 |
| reporter | This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/94638 |
| title | MS16-137: Security Update for Windows Authentication Methods (3199173) |
| code | |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/139700/lsass-corrupt.txt |
| id | PACKETSTORM:139700 |
| last seen | 2016-12-05 |
| published | 2016-11-14 |
| reporter | laurent gaffie |
| source | https://packetstormsecurity.com/files/139700/LSASS-SMB-NTLM-Exchange-Remote-Memory-Corruption.html |
| title | LSASS SMB NTLM Exchange Remote Memory Corruption |