Microsoft Windows up to Server 2019 AppX Deployment Service privilege escalation – DigitalMunition




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Published on July 11th, 2019 📆 | 1913 Views ⚑

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Microsoft Windows up to Server 2019 AppX Deployment Service privilege escalation

CVSS Meta Temp Score Current Exploit Price (≈)
6.7 $5k-$25k

A vulnerability, which was classified as critical, was found in Microsoft Windows (Operating System). Affected is an unknown functionality of the component AppX Deployment Service. 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 released 07/09/2019 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability is traded as CVE-2019-1130. It is possible to launch the attack remotely. The successful exploitation needs a single authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/10/2019). The advisory points out:

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data.

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

Entries connected to this vulnerability are available at 137585, 137584, 137583 and 137582.

Type

Vendor

Name

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔒


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

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: 🔒

07/09/2019 Advisory disclosed
07/09/2019 +0 days Countermeasure disclosed
07/10/2019 +1 days VulDB entry created
07/10/2019 +0 days VulDB last updateVendor: microsoft.com
Product: microsoft.com

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

CVE: CVE-2019-1130 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔒

Created: 07/10/2019 10:11 AM
Complete: 🔍

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