Microsoft Windows 10 1803/Server 1803 Subsystem for Linux integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Windows 10 1803/Server 1803 (Operating System). This issue affects an unknown code of the component Subsystem for Linux. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An elevation of privilege vulnerability exists due to an integer overflow in Windows Subsystem for Linux, aka "Windows Subsystem for Linux Elevation of Privilege Vulnerability." This affects Windows 10, Windows 10 Servers.

The bug was discovered 09/11/2018. The weakness was shared 09/11/2018 with Tencent Keen Security Lab as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2018-8441 since 03/14/2018. An attack has to be approached locally. A simple authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/16/2024). The advisory points out:

An elevation of privilege vulnerability exists due to an integer overflow in Windows Subsystem for Linux. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.

The vulnerability scanner Nessus provides a plugin with the ID 117411 (KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 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 91491 (Microsoft Azure Stack 1808 Multiple Security Vulnerabilities).

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 (117411) and SecurityFocus (BID 105271†). The entries VDB-123826, VDB-123833, VDB-123855 and VDB-123866 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117411
Nessus Name: KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 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 🔍
09/11/2018 +180 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/12/2018 +0 days 🔍
09/12/2018 +0 days 🔍
08/16/2024 +2165 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

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

CVE: CVE-2018-8441 (🔍)
OVAL: 🔍

SecurityFocus: 105271 - Microsoft Windows Subsystem for Linux CVE-2018-8441 Local Privilege Escalation Vulnerability
SecurityTracker: 1041641

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

Entryinfo

Created: 09/12/2018 09:20 AM
Updated: 08/16/2024 09:24 PM
Changes: 09/12/2018 09:20 AM (84), 03/22/2020 04:22 PM (6), 05/08/2023 01:27 PM (4), 08/16/2024 09:24 PM (16)
Complete: 🔍
Cache ID: 18:A3C:40

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