Vulnerabilities > CVE-2016-3299 - Improper Access Control vulnerability in Microsoft products
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
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, and Windows 10 Gold and 1511 allow remote attackers to hijack network traffic or bypass intended Enhanced Protected Mode (EPM) or application container protection mechanisms, and consequently render untrusted content in a browser, by leveraging how NetBIOS validates responses, aka "NetBIOS Spoofing 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.
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS16-077.NASL |
| description | The remote Windows host is missing a security update. It is, therefore, affected by multiple elevation of privilege vulnerabilities : - An elevation of privilege vulnerability exists in the Web Proxy Auto Discovery (WPAD) protocol due to improper handling of the proxy discovery process. A remote attacker can exploit this, by responding to NetBIOS name requests for WPAD, to bypass security restrictions and gain elevated privileges. (CVE-2016-3213) - An elevation of privilege vulnerability exists in the Web Proxy Auto Discovery (WPAD) protocol due to improper handling of certain proxy discovery scenarios. A remote attacker can exploit this to elevate privileges, resulting in the ability to disclose or control network traffic. (CVE-2016-3236) - An elevation of privilege vulnerability exists in NetBIOS due to improper handling of responses. A remote attacker can exploit this, via specially crafted NetBIOS responses, to appear as a trusted network device, resulting in the ability to render untrusted content in a browser outside of Enhanced Protected Mode (EPM) or an application container. (CVE-2016-3299) |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 91605 |
| published | 2016-06-14 |
| 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/91605 |
| title | MS16-077: Security Update for WPAD (3165191) |
| code | |