Microsoft Windows Network Policy Server RADIUS input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/04/2024).

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.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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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: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS16-021
TippingPoint: 🔍

McAfee IPS: 🔍
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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 (🔍)
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 09:39 PM
Updated: 11/04/2024 12:01 AM
Changes: 02/10/2016 09:39 PM (64), 04/07/2017 01:52 PM (22), 07/07/2022 02:58 PM (5), 07/07/2022 03:02 PM (1), 11/04/2024 12:01 AM (16)
Complete: 🔍
Cache ID: 18:123:40

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