Microsoft Windows 10 1607/10 1703/Server 2016 Hyper-V information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Microsoft Windows 10 1607/10 1703/Server 2016. Impacted is an unknown function of the component Hyper-V. This manipulation causes information disclosure. This vulnerability is tracked as CVE-2017-8712. The attack is restricted to local execution. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Windows 10 1607/10 1703/Server 2016 (Operating System). Affected by this vulnerability is some unknown functionality of the component Hyper-V. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

The Windows Hyper-V component on Microsoft Windows 10 1607, 1703, and Windows Server 2016 allows an information disclosure vulnerability when it fails to properly validate input from an authenticated user on a guest operating system, aka "Hyper-V Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-8707, CVE-2017-8711, CVE-2017-8706, and CVE-2017-8713.

The bug was discovered 09/12/2017. The weakness was disclosed 09/12/2017 as KB4038782 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8712 since 05/03/2017. The exploitation appears to be difficult. Attacking locally is a requirement. A single authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. The advisory points out:

An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker on a guest operating system could run a specially crafted application that could cause the Hyper-V host operating system to disclose memory information.

The vulnerability scanner Nessus provides a plugin with the ID 103128 (KB4038782: Windows 10 Version 1607 and Windows Server 2016 September 2017 Cumulative 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 91408 (Microsoft Windows Security Update September 2017).

Applying the patch KB4038782 is able to eliminate this problem. The bugfix is ready for download at catalog.update.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103128) and SecurityFocus (BID 100795†). The entries VDB-106500, VDB-106501, VDB-106506 and VDB-106508 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 103128
Nessus Name: KB4038782: Windows 10 Version 1607 and Windows Server 2016 September 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4038788)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB4038782

Timelineinfo

05/03/2017 🔍
09/12/2017 +131 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/13/2017 +1 days 🔍
10/07/2024 +2581 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: KB4038782
Researcher: Axel Souchet
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8712 (🔍)
GCVE (CVE): GCVE-0-2017-8712
GCVE (VulDB): GCVE-100-106507

OVAL: 🔍

SecurityFocus: 100795
SecurityTracker: 1039317

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

Entryinfo

Created: 09/13/2017 11:26
Updated: 10/07/2024 19:32
Changes: 09/13/2017 11:26 (80), 11/15/2019 15:14 (9), 01/12/2021 08:56 (2), 01/12/2021 09:00 (3), 10/07/2024 19:32 (17)
Complete: 🔍
Cache ID: 216::103

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