Microsoft Windows up to Server 2016 CNG Security Feature cng.sys 7pk security

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$5k-$25k0.00

A vulnerability was found in Microsoft Windows up to Server 2016 (Operating System) and classified as critical. Affected by this issue is an unknown function in the library cng.sys of the component CNG Security Feature. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability.

The bug was discovered 03/13/2018. The weakness was presented 03/13/2018 by James Forshaw with Google Project Zero as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2018-0902 since 12/01/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/17/2024). The MITRE ATT&CK project declares the attack technique as T1211. The advisory points out:

A security feature bypass vulnerability exists in the Cryptography Next Generation (CNG) kernel-mode driver (cng.sys) when it fails to properly validate and enforce impersonation levels.

The vulnerability scanner Nessus provides a plugin with the ID 108288 (KB4088786: Windows 10 March 2018 Security Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91435 (Microsoft Windows Security Update March 2018).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (108288) and SecurityFocus (BID 103266†). See VDB-114501, VDB-114502, VDB-114503 and VDB-114504 for similar entries.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 5.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108288
Nessus Name: KB4088786: Windows 10 March 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 831303
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4088782)
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: 🔍

Timelineinfo

12/01/2017 🔍
03/13/2018 +102 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/14/2018 +1 days 🔍
03/14/2018 +0 days 🔍
08/17/2024 +2348 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: James Forshaw
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0902 (🔍)
OVAL: 🔍

SecurityFocus: 103266 - Microsoft Windows Kernel 'cng.sys' CVE-2018-0902 Security Bypass Vulnerability
SecurityTracker: 1040520

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 03/14/2018 11:33 AM
Updated: 08/17/2024 06:28 PM
Changes: 03/14/2018 11:33 AM (85), 06/05/2020 09:02 PM (7), 02/04/2021 07:56 PM (3), 08/17/2024 06:28 PM (17)
Complete: 🔍
Cache ID: 18:F2F:40

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