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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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows up to Server 2016. It has been rated as critical. Impacted is an unknown function of the component Device Guard Code Integrity Policy. This manipulation causes 7pk security. This vulnerability appears as CVE-2018-8222. The attack requires local access. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows up to Server 2016 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown function of the component Device Guard Code Integrity Policy. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 07/10/2018. The weakness was presented 07/10/2018 by Matt as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is known as CVE-2018-8222 since 03/14/2018. An attack has to be approached locally. The successful exploitation requires a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue. 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 110980 (KB4338814: Windows 10 Version 1607 and Windows Server 2016 July 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 91456 (Microsoft Windows Security Update July 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 (110980) and SecurityFocus (BID 104635†). See VDB-121071, VDB-121073, VDB-121078 and VDB-121088 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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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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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: 110980
Nessus Name: KB4338814: Windows 10 Version 1607 and Windows Server 2016 July 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: 🔍
Exposure Time: 🔍

Timelineinfo

03/14/2018 🔍
07/10/2018 +117 days 🔍
07/10/2018 +0 days 🔍
07/10/2018 +0 days 🔍
07/10/2018 +0 days 🔍
07/10/2018 +0 days 🔍
07/10/2018 +0 days 🔍
07/11/2018 +1 days 🔍
04/05/2023 +1729 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

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

CVE: CVE-2018-8222 (🔍)
GCVE (CVE): GCVE-0-2018-8222
GCVE (VulDB): GCVE-100-121093

OVAL: 🔍

SecurityFocus: 104635 - Microsoft Windows Device Guard CVE-2018-8222 Local Security Bypass Vulnerability
SecurityTracker: 1041265

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

Entryinfo

Created: 07/11/2018 10:09
Updated: 04/05/2023 15:30
Changes: 07/11/2018 10:09 (85), 03/01/2020 15:26 (6), 04/05/2023 15:30 (5)
Complete: 🔍
Cache ID: 216::103

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