Microsoft Windows up to Server 1803 Windows Shell input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Microsoft Windows 10 1703/10 1709/10 1803/Server 1709/Server 1803. The impacted element is an unknown function of the component Windows Shell. Such manipulation leads to input validation. This vulnerability is listed as CVE-2018-8414. The attack may be performed from remote. In addition, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows 10 1703/10 1709/10 1803/Server 1709/Server 1803 (Operating System). Affected by this issue is an unknown part of the component Windows Shell. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

The bug was discovered 08/14/2018. The weakness was presented 08/14/2018 by Matt as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2018-8414 since 03/14/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/07/2025). The advisory points out:

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 111684 (KB4343885: Windows 10 Version 1703 August 2018 Security Update (Foreshadow)), 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 91465 (Microsoft Windows Security Update August 2018). This issue was added on 03/25/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 04/15/2022:

Apply updates per vendor instructions.

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 Zero-Day.cz (507), Tenable (111684) and SecurityFocus (BID 105016†). See VDB-122826, VDB-122844 and VDB-122881 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.8
Vendor Vector (Microsoft): 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 111684
Nessus Name: KB4343885: Windows 10 Version 1703 August 2018 Security Update (Foreshadow)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

03/14/2018 🔍
08/14/2018 +152 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +0 days 🔍
02/07/2025 +2368 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Matt
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8414 (🔍)
GCVE (CVE): GCVE-0-2018-8414
GCVE (VulDB): GCVE-100-122888

OVAL: 🔍

SecurityFocus: 105016 - Microsoft Windows Shell CVE-2018-8414 Remote Code Execution Vulnerability
SecurityTracker: 1041458

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

Entryinfo

Created: 08/14/2018 22:01
Updated: 02/07/2025 18:58
Changes: 08/14/2018 22:01 (84), 03/15/2020 16:04 (6), 05/02/2023 08:47 (4), 04/24/2024 12:24 (25), 07/05/2024 02:34 (2), 07/15/2024 09:26 (2), 09/09/2024 22:29 (1), 02/07/2025 18:58 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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