Microsoft Visual Studio File Permission privilege escalation

A vulnerability classified as critical has been found in Microsoft Visual Studio 2017 Version 15.9/2019 Version 16.0/2019 Version 16.1 (Programming Tool Software). This affects an unknown code of the component File Permission. 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 disclosed 07/09/2019 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with Microsoft. This vulnerability is uniquely identified as CVE-2019-1077. It is possible to initiate the attack remotely. A single authentication is required for exploitation. 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 07/10/2019). The advisory points out:

An elevation of privilege vulnerability exists when the Visual Studio updater service improperly handles file permissions. An attacker who successfully exploited this vulnerability overwrite arbitrary files with XML content in the security context of the local system.

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

The entry 137548 is pretty similar.

Type

• Programming Tool Software

Vendor

• Microsoft

Name

• Visual Studio

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VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

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

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

CVE: CVE-2019-1077 (🔒)
See also: 🔒

Created: 07/10/2019 08:26 AM
Complete: 🔍

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