Microsoft Windows 2012/2012 R2/2016/Server 2008 R2 SP1 Hyper-V RemoteFX vGPU input validation

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CVSS Meta Temp Score
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CTI Interest Score
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8.3$5k-$25k0.00

A vulnerability was found in Microsoft Windows 2012/2012 R2/2016/Server 2008 R2 SP1 (Operating System) and classified as critical. This issue affects an unknown code of the component Hyper-V RemoteFX vGPU. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-20. Impacted is confidentiality, integrity, and availability.

The weakness was presented 07/14/2020 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2020-1043 since 11/04/2019. The attack needs to be initiated within the local network. A simple authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/30/2020). The advisory points out:

A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system, attacking certain third-party video drivers running on the Hyper-V host. This could then cause the host operating system to execute arbitrary code.

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

See 157977, 157976, 157975 and 157974 for similar entries.

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VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.3

VulDB Base Score: 9.0
VulDB Temp Score: 8.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 8.0
Vendor Vector (Microsoft): 🔒

NVD Base Score: 9.0
NVD Vector: 🔒

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation (CWE-20)
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat: 🔍
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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

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

Timelineinfoedit

11/04/2019 CVE assigned
07/14/2020 +253 days Advisory disclosed
07/14/2020 +0 days Countermeasure disclosed
07/15/2020 +1 days VulDB entry created
10/30/2020 +107 days VulDB last update

Sourcesinfoedit

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

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

CVE: CVE-2020-1043 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔒

Entryinfoedit

Created: 07/15/2020 11:22 AM
Updated: 10/30/2020 11:02 AM
Changes: (2) source_cve_assigned advisory_confirm_url
Complete: 🔍

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