Microsoft Windows up to Server 2016 PowerShell PSObject Object access control

CVSS Meta Temp Score
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Windows up to Server 2016. This impacts an unknown function of the component PowerShell. Performing a manipulation as part of PSObject Object results in access control. This vulnerability is identified as CVE-2017-8565. The attack can be initiated remotely. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows up to Server 2016 (Operating System). This affects some unknown processing of the component PowerShell. The manipulation as part of a PSObject Object leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Windows PowerShell in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows a remote code execution vulnerability when PSObject wraps a CIM Instance, aka "Windows PowerShell Remote Code Execution Vulnerability".

The bug was discovered 07/11/2017. The weakness was released 07/11/2017 as KB4025338 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2017-8565 since 05/03/2017. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Required for exploitation is a authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/31/2020). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 101365 (Windows 8.1 and Windows Server 2012 R2 July 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91499 (Microsoft Azure Stack 1809 Multiple Security Vulnerabilities).

Applying the patch KB4025338 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 (101365) and SecurityFocus (BID 99394†). Entries connected to this vulnerability are available at VDB-4431, VDB-7953, VDB-10710 and VDB-10696. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101365
Nessus Name: Windows 8.1 and Windows Server 2012 R2 July 2017 Security Updates
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4025344)
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: KB4025338

Timelineinfo

05/03/2017 🔍
07/11/2017 +69 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/12/2017 +1 days 🔍
12/31/2020 +1268 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: KB4025338
Researcher: Oleksandr Mirosh, Alvaro Muñoz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8565 (🔍)
GCVE (CVE): GCVE-0-2017-8565
GCVE (VulDB): GCVE-100-103431

OVAL: 🔍

SecurityFocus: 99394 - Microsoft Windows PowerShell CVE-2017-8565 Remote Code Execution Vulnerability
SecurityTracker: 1038854

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

Entryinfo

Created: 07/12/2017 10:40
Updated: 12/31/2020 18:06
Changes: 07/12/2017 10:40 (91), 10/24/2019 20:25 (4), 12/31/2020 18:01 (2), 12/31/2020 18:06 (1)
Complete: 🔍
Cache ID: 216::103

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