Microsoft Windows Network Policy Server RADIUS input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Windows Server 2008/Server 2008 R2/Server 2012/Server 2012 R2. The impacted element is an unknown function of the component Network Policy Server RADIUS. The manipulation leads to input validation. This vulnerability is traded as CVE-2016-0050. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows Server 2008/Server 2008 R2/Server 2012/Server 2012 R2 (Operating System) and classified as problematic. This issue affects an unknown functionality of the component Network Policy Server RADIUS. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability.

The weakness was shared 02/09/2016 with Microsoft as MS16-021 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The identification of this vulnerability is CVE-2016-0050 since 12/04/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 88653 (MS16-021: Security Update for NPS RADIUS Server to Address Denial of Service (3133043)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91161 (Microsoft Windows Network Policy Server RADIUS Implementation Denial of Service (MS16-021)).

Applying the patch MS16-021 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 23845.

The vulnerability is also documented in the databases at Tenable (88653), SecurityFocus (BID 82513†) and Vulnerability Center (SBV-56511†). The entries VDB-80878, VDB-80876, VDB-80877 and VDB-80875 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 88653
Nessus Name: MS16-021: Security Update for NPS RADIUS Server to Address Denial of Service (3133043)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: Microsoft Windows NPS RADIUS Server Denial of Service Vulnerability (3133043)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS16-021
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

12/04/2015 🔍
02/09/2016 +67 days 🔍
02/09/2016 +0 days 🔍
02/09/2016 +0 days 🔍
02/09/2016 +0 days 🔍
02/10/2016 +1 days 🔍
02/10/2016 +0 days 🔍
02/10/2016 +0 days 🔍
11/04/2024 +3189 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-021
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-0050 (🔍)
GCVE (CVE): GCVE-0-2016-0050
GCVE (VulDB): GCVE-100-80879
SecurityFocus: 82513 - Microsoft Network Policy Server RADIUS Implementation CVE-2016-0050 Denial of Service Vulnerability
SecurityTracker: 1034986
Vulnerability Center: 56511 - [MS16-021] Microsoft Network Policy Server Remote DoS via a Crafted RADIUS Authentication Request, Medium

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 02/10/2016 21:39
Updated: 11/04/2024 00:01
Changes: 02/10/2016 21:39 (64), 04/07/2017 13:52 (22), 07/07/2022 14:58 (5), 07/07/2022 15:02 (1), 11/04/2024 00:01 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!