Microsoft Windows 10 1709/10 1803/Server 1709/Server 1803 Cortana access control

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Windows 10 1709/10 1803/Server 1709/Server 1803 and classified as critical. This affects an unknown part of the component Cortana. Performing a manipulation results in access control. This vulnerability is identified as CVE-2018-8140. The attack may be carried out on the physical device. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows 10 1709/10 1803/Server 1709/Server 1803 (Operating System). This affects an unknown part of the component Cortana. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An Elevation of Privilege vulnerability exists when Cortana retrieves data from user input services without consideration for status, aka "Cortana Elevation of Privilege Vulnerability." This affects Windows 10 Servers, Windows 10.

The bug was discovered 06/12/2018. The weakness was released 06/12/2018 with McAfee as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is uniquely identified as CVE-2018-8140 since 03/14/2018. Attacking locally is a requirement. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

An Elevation of Privilege vulnerability exists when Cortana retrieves data from user input services without consideration for status. An attacker who successfully exploited the vulnerability could execute commands with elevated permissions.

The vulnerability scanner Nessus provides a plugin with the ID 110487 (KB4284835: Windows 10 Version 1803 and Windows Server Version 1803 June 2018 Security Update), 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 91452 (Microsoft Windows Security Update June 2018).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110487) and SecurityFocus (BID 104354†). Entries connected to this vulnerability are available at VDB-119431, VDB-119432, VDB-119433 and VDB-119434. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.8
Vendor Vector (Microsoft): 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110487
Nessus Name: KB4284835: Windows 10 Version 1803 and Windows Server Version 1803 June 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
06/12/2018 +90 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/12/2018 +0 days 🔍
06/13/2018 +1 days 🔍
06/14/2018 +0 days 🔍
03/27/2023 +1747 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: McAfee
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8140 (🔍)
GCVE (CVE): GCVE-0-2018-8140
GCVE (VulDB): GCVE-100-119451
SecurityFocus: 104354 - Microsoft Windows Cortana CVE-2018-8140 Local Privilege Escalation Vulnerability
SecurityTracker: 1041108

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

Entryinfo

Created: 06/13/2018 18:30
Updated: 03/27/2023 07:19
Changes: 06/13/2018 18:30 (86), 02/18/2020 19:23 (6), 03/27/2023 07:19 (4)
Complete: 🔍
Cache ID: 216:0A5:103

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