Microsoft Windows up to Server 2016 Hyper-V information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

A vulnerability was found in Microsoft Windows (Operating System) and classified as problematic. Affected by this issue is an unknown code of the component Hyper-V. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The Windows Hyper-V component on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows 10 Gold, 1511, 1607, and 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-2017-8706, CVE-2017-8711, CVE-2017-8712, and CVE-2017-8713.

The bug was discovered 09/12/2017. The weakness was disclosed 09/12/2017 with 360 Marvel Team as KB4038777 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2017-8707 since 05/03/2017. The exploitation is known to be difficult. Local access is required to approach this attack. A simple authentication is needed for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. 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 103127 (Windows 7 and Windows Server 2008 R2 September 2017 Security Updates), 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.

Applying the patch KB4038777 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 vulnerability database at Tenable (103127). The entries 106454, 106472, 106481 and 106483 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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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: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103127
Nessus Name: Windows 7 and Windows Server 2008 R2 September 2017 Security Updates
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Hyper-V Information Disclosure Vulnerability (KB4039325)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: KB4038777

Timelineinfo

05/03/2017 🔍
09/12/2017 +132 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 🔍
01/12/2021 +1217 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: KB4038777
Researcher: ZhenhaoHong
Organization: 360 Marvel Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8707 (🔍)
OVAL: 🔍

SecurityTracker: 1039317
SecurityFocus: 100790 - Microsoft Windows Hyper-V CVE-2017-8707 Information Disclosure Vulnerability

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

Entryinfo

Created: 09/13/2017 11:26
Updated: 01/12/2021 08:14
Changes: 09/13/2017 11:26 (88), 06/06/2020 10:14 (6), 01/12/2021 08:07 (2), 01/12/2021 08:14 (1)
Complete: 🔍

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