Microsoft Windows up to Server 2016 Object information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Windows up to Server 2016. This affects an unknown function of the component Object Handler. Performing a manipulation results in information disclosure. This vulnerability is cataloged as CVE-2017-8486. The attack must be initiated from a local position. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as problematic has been found in Microsoft Windows up to Server 2016 (Operating System). This affects an unknown functionality of the component Object Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an information disclosure due to the way it handles objects in memory, aka "Win32k Information Disclosure Vulnerability".

The bug was discovered 07/11/2017. The weakness was shared 07/11/2017 with Qihoo 360 as KB4025341 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-2017-8486 since 05/03/2017. The exploitability is told to be difficult. Attacking locally is a requirement. The successful exploitation needs a authentication. 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 in Microsoft Windows when Win32k fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. To exploit the vulnerability, an attacker could create a special application to run on a target system.

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 KB4025341 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 99414†). The entries VDB-4431, VDB-7953, VDB-10710 and VDB-10696 are related to this item. Statistical analysis made it clear that VulDB provides the best quality 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: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.7
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.7
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: 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: 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 (KB4025877)
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: KB4025341

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: KB4025341
Researcher: pgboy, zhong_sf
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8486 (🔍)
GCVE (CVE): GCVE-0-2017-8486
GCVE (VulDB): GCVE-100-103419

OVAL: 🔍

SecurityFocus: 99414 - Microsoft Windows Kernel 'Win32k.sys' CVE-2017-8486 Local Information Disclosure Vulnerability
SecurityTracker: 1038853

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

Entryinfo

Created: 07/12/2017 10:35
Updated: 12/31/2020 16:31
Changes: 07/12/2017 10:35 (91), 06/06/2020 07:20 (5), 12/31/2020 16:26 (2), 12/31/2020 16:31 (1)
Complete: 🔍
Cache ID: 216::103

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