Microsoft Windows 10/Server 2016 TRIE access control

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

A vulnerability was found in Microsoft Windows 10/Server 2016 (Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component TRIE. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-284. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 10/10/2017. The weakness was published 10/10/2017 by Richard Shupak as KB4042895 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-11769 since 07/31/2017. The exploitation appears to be difficult. Attacking locally is a requirement. A single authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/16/2021). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

A remote code execution vulnerability exists in the way that certain Windows components handle the loading of DLL files. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

The vulnerability scanner Nessus provides a plugin with the ID 103745 (KB4041676: Windows 10 Version 1703 October 2017 Cumulative Update (KRACK)), 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 local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91411 (Microsoft Windows Security Update October 2017 (KRACK Attack) (ROCA)).

Applying the patch KB4042895 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 SecurityFocus (BID 101112), SecurityTracker (ID 1039535) and Tenable (103745). Similar entries are available at 107699, 107701, 107702 and 107704.

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VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-284
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103745
Nessus Name: KB4041676: Windows 10 Version 1703 October 2017 Cumulative Update (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4042895)
OpenVAS File: 🔍
OpenVAS Family: 🔍

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Countermeasuresinfoedit

Recommended: Patch
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Patch: KB4042895

Timelineinfoedit

07/31/2017 🔍
10/10/2017 +70 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/11/2017 +1 days 🔍
10/13/2017 +2 days 🔍
01/16/2021 +1191 days 🔍

Sourcesinfoedit

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

Advisory: KB4042895
Researcher: Richard Shupak
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11769 (🔍)
OVAL: 🔍

SecurityFocus: 101112
SecurityTracker: 1039535

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

Entryinfoedit

Created: 10/11/2017 11:38 PM
Updated: 01/16/2021 05:05 PM
Changes: (3) advisory_person_name source_securityfocus_date source_securityfocus_class
Complete: 🔍

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