VDB-125112 · CVE-2018-8329 · BID 105505

Microsoft Windows 10 1803/Server 1803 Subsystem for Linux access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$5k-$25k0.00

A vulnerability, which was classified as critical, was found in Microsoft Windows 10 1803/Server 1803 (Operating System). Affected is an unknown functionality of the component Subsystem for Linux. 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. CVE summarizes:

An Elevation of Privilege vulnerability exists in Windows Subsystem for Linux when it fails to properly handle objects in memory, aka "Linux On Windows Elevation Of Privilege Vulnerability." This affects Windows 10, Windows 10 Servers.

The bug was discovered 10/09/2018. The weakness was disclosed 10/09/2018 with Tencent Keen Security Lab as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2018-8329 since 03/14/2018. It is possible to launch the attack remotely. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/01/2020). The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

An Elevation of Privilege vulnerability exists in Windows Subsystem for Linux when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 117999 (KB4462919: Windows 10 Version 1803 and Windows Server Version 1803 October 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 91474 (Microsoft Windows Security Update October 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 vulnerability database at Tenable (117999). The entries 125082, 125083, 125084 and 125089 are pretty similar.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.0
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117999
Nessus Name: KB4462919: Windows 10 Version 1803 and Windows Server Version 1803 October 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Timelineinfo

03/14/2018 🔍
10/09/2018 +208 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/10/2018 +1 days 🔍
10/10/2018 +0 days 🔍
04/01/2020 +539 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Tencent Keen Security Lab
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8329 (🔍)
OVAL: 🔍

SecurityFocus: 105505 - Microsoft Windows Subsystem for Linux CVE-2018-8329 Local Privilege Escalation Vulnerability

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

Entryinfo

Created: 10/10/2018 12:14
Updated: 04/01/2020 07:40
Changes: 10/10/2018 12:14 (86), 04/01/2020 07:40 (6)
Complete: 🔍

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