Microsoft Windows up to Server 2016 Device Guard Code Integrity Policy 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.5$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Windows up to Server 2016. Affected by this vulnerability is an unknown functionality of the component Device Guard Code Integrity Policy. The manipulation results in 7pk security. This vulnerability is known as CVE-2018-8211. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows up to Server 2016 (Operating System). Affected is an unknown code block of the component Device Guard Code Integrity Policy. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 06/12/2018. The weakness was published 06/12/2018 by Matt as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated with the vendor. This vulnerability is traded as CVE-2018-8211 since 03/14/2018. It is possible to launch the attack remotely. The requirement for exploitation is a authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/27/2023). The MITRE ATT&CK project declares the attack technique as T1211. The advisory points out:

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session. An attacker who successfully exploited this vulnerability could inject code into a trusted PowerShell process to bypass the Device Guard Code Integrity policy on the local machine.

The vulnerability scanner Nessus provides a plugin with the ID 110487 (KB4284835: Windows 10 Version 1803 and Windows Server Version 1803 June 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 91452 (Microsoft Windows Security Update June 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 (110487) and SecurityFocus (BID 104326†). Similar entries are available at VDB-119431, VDB-119432, VDB-119433 and VDB-119434. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110487
Nessus Name: KB4284835: Windows 10 Version 1803 and Windows Server Version 1803 June 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 🔍
06/12/2018 +90 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/13/2018 +1 days 🔍
06/14/2018 +0 days 🔍
03/27/2023 +1747 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Matt
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8211 (🔍)
GCVE (CVE): GCVE-0-2018-8211
GCVE (VulDB): GCVE-100-119460

OVAL: 🔍

SecurityFocus: 104326 - Microsoft Windows Device Guard CVE-2018-8211 Local Security Bypass Vulnerability
SecurityTracker: 1041098

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

Entryinfo

Created: 06/13/2018 18:41
Updated: 03/27/2023 08:10
Changes: 06/13/2018 18:41 (86), 02/18/2020 20:26 (6), 03/27/2023 08:10 (5)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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