Vulnerabilities > CVE-2016-3352 - Improper Authorization vulnerability in Microsoft Windows 10, Windows 8.1 and Windows RT 8.1
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
Microsoft Windows 8.1, Windows RT 8.1, and Windows 10 Gold, 1511, and 1607 do not properly check NTLM SSO requests for MSA logins, which makes it easier for remote attackers to determine passwords via a brute-force attack on NTLM password hashes, aka "Microsoft Information Disclosure Vulnerability."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 5 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing Functionality Not Properly Constrained by ACLs In applications, particularly web applications, access to functionality is mitigated by the authorization framework, whose job it is to map ACLs to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application or can run queries for data that he is otherwise not supposed to.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Directory Indexing An adversary crafts a request to a target that results in the target listing/indexing the content of a directory as output. One common method of triggering directory contents as output is to construct a request containing a path that terminates in a directory name rather than a file name since many applications are configured to provide a list of the directory's contents when such a request is received. An adversary can use this to explore the directory tree on a target as well as learn the names of files. This can often end up revealing test files, backup files, temporary files, hidden files, configuration files, user accounts, script contents, as well as naming conventions, all of which can be used by an attacker to mount additional attacks.
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
- Accessing, Modifying or Executing Executable Files An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
Msbulletin
| bulletin_id | MS16-110 |
| bulletin_url | |
| date | 2016-09-13T00:00:00 |
| impact | Remote code execution |
| knowledgebase_id | 3178467 |
| knowledgebase_url | |
| severity | Important |
| title | Security Update for Microsoft Windows |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS16-110.NASL |
| description | The remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists due to a failure to properly enforce permissions when loading specially crafted DLLs. A local attacker can exploit this vulnerability to execute arbitrary code with administrator privileges. (CVE-2016-3346) - An information disclosure vulnerability exists due to a failure to properly validate NT LAN Manager (NTLM) Single Sign-On (SSO) requests during Microsoft Account (MSA) login sessions. An unauthenticated, remote attacker can exploit this vulnerability, by convincing a user to load a malicious document that initiates an NTLM SSO validation request or to visit a malicious website or SMB / UNC path destination, to disclose a user |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 93469 |
| published | 2016-09-13 |
| reporter | This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/93469 |
| title | MS16-110: Security Update for Microsoft Windows (3178467) |
| code | |