Microsoft Windows up to Server 2016 Security 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows 10 1607/10 1703/10 1709/Server 1709/Server 2016 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Security. Such manipulation leads to 7pk security. This vulnerability is uniquely identified as CVE-2018-8142. Local access is required to approach this attack. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 10 1607/10 1703/10 1709/Server 1709/Server 2016 (Operating System). It has been rated as critical. Affected by this issue is an unknown code of the component Security. 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. CVE summarizes:

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-1035.

The bug was discovered 05/08/2018. The weakness was disclosed 05/08/2018 by Alex with CrowdStrike as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2018-8142 since 03/14/2018. The attack needs to be approached locally. A simple authentication is needed for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211. The advisory points out:

A security feature bypass exists when Windows incorrectly validates kernel driver signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed drivers into the kernel.

The vulnerability scanner Nessus provides a plugin with the ID 108960 (KB4093107: Windows 10 Version 1703 April 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 91447 (Microsoft Windows Security Update May 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 (108960) and SecurityFocus (BID 103962†). The entries VDB-115991, VDB-115992, VDB-115996 and VDB-115998 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

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Version

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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: 🔍

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108960
Nessus Name: KB4093107: Windows 10 Version 1703 April 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
04/10/2018 +27 days 🔍
05/08/2018 +28 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/08/2018 +0 days 🔍
05/21/2018 +12 days 🔍
05/22/2018 +1 days 🔍
02/07/2020 +626 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Alex
Organization: CrowdStrike
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8142 (🔍)
GCVE (CVE): GCVE-0-2018-8142
GCVE (VulDB): GCVE-100-118052

OVAL: 🔍

SecurityFocus: 103962 - Microsoft Windows CVE-2018-8142 Local Security Bypass Vulnerability

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

Entryinfo

Created: 05/22/2018 09:00
Updated: 02/07/2020 19:28
Changes: 05/22/2018 09:00 (84), 02/07/2020 19:28 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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