Microsoft Windows 7 SP1 up to Server 2016 Kernel information disclosure

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CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability classified as problematic has been found in Microsoft Windows (Operating System). Affected is an unknown code of the component Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. This is going to have an impact on confidentiality.

The bug was discovered 10/10/2017. The weakness was presented 10/10/2017 by WenQunWang with Tencent as KB4042120 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2017-11765 since 07/31/2017. The attack needs to be approached locally. A authentication is needed for exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s 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 KB4042120 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 101111), SecurityTracker (ID 1039526) and Tenable (103745). See 107699, 107701, 107702 and 107704 for similar entries.

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VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 5.5
Vendor Vector (Microsoft): 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Information disclosure
CWE: CWE-200
ATT&CK: Unknown

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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Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4042895)
OpenVAS File: 🔍
OpenVAS Family: 🔍

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Qualys Name: 🔍

Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: KB4042120

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07/31/2017 🔍
10/10/2017 +71 days 🔍
10/10/2017 +0 days 🔍
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10/10/2017 +0 days 🔍
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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: KB4042120
Researcher: WenQunWang
Organization: Tencent
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11765 (🔍)
OVAL: 🔍

SecurityFocus: 101111 - Microsoft Windows Kernel CVE-2017-11765 Local Information Disclosure Vulnerability
SecurityTracker: 1039526

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

Entryinfoedit

Created: 10/11/2017 11:38 PM
Updated: 01/16/2021 03:52 PM
Changes: (1) advisory_person_name
Complete: 🔍

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