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Published on July 20th, 2019 📆 | 6844 Views ⚑

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Microsoft PowerShell Core 6.1/6.2 Windows Defender Application Control privilege escalation

CVSS Meta Temp Score Current Exploit Price (≈)
5.3 $0-$5k

A vulnerability was found in Microsoft PowerShell Core 6.1/6.2. It has been classified as critical. This affects an unknown functionality of the component Windows Defender Application Control. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-269. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 07/16/2019 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is uniquely identified as CVE-2019-1167 since 11/26/2018. 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 07/20/2019). The advisory points out:

A security feature bypass vulnerability exists in Windows Defender Application Control (WDAC) which could allow an attacker to bypass WDAC enforcement. An attacker who successfully exploited this vulnerability could circumvent PowerShell Core Constrained Language Mode on the machine.

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

Vendor

Name

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

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

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Privilege escalation (CWE-269)
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

11/26/2018 CVE assigned
07/16/2019 +232 days Advisory disclosed
07/16/2019 +0 days Countermeasure disclosed
07/20/2019 +4 days VulDB entry created
07/20/2019 +0 days VulDB last updateVendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Coordinated: 🔒

CVE: CVE-2019-1167 (🔒)

Created: 07/20/2019 08:42 AM
Complete: 🔍

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