Microsoft Windows up to Server 2019 Win32k access control

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been declared as critical. This issue affects some unknown processing of the component Win32k. Such manipulation leads to access control. This vulnerability is documented as CVE-2018-8453. The attack can be executed remotely. Additionally, an exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) and classified as critical. Affected by this issue is some unknown processing of the component Win32k. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/09/2018. The weakness was released 10/09/2018 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2018-8453 since 03/14/2018. The attack may be launched remotely. Required for exploitation is a simple authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

A public exploit has been developed by ze0r/Kaspersky Lab/Jacob Robles and been published 11 months after the advisory. The exploit is available at packetstormsecurity.com. It is declared as attacked. As 0-day the estimated underground price was around $25k-$100k. 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). This issue was added on 01/21/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 07/21/2022:

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 Exploit-DB (47134), Zero-Day.cz (514), Tenable (117999) and SecurityFocus (BID 105467†). Entries connected to this vulnerability are available at VDB-125082, VDB-125083, VDB-125084 and VDB-125089. 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: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: ze0r/Kaspersky Lab/Jacob Robles
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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: 🔍

MetaSploit ID: exploit/windows/local/cve_2018_8453_win32k_priv_esc
MetaSploit Name: Windows NtUserSetWindowFNID Win32k User Callback

Exploit-DB: 🔍
Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

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 🔍
07/17/2019 +279 days 🔍
10/13/2025 +2280 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: 153669
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8453 (🔍)
GCVE (CVE): GCVE-0-2018-8453
GCVE (VulDB): GCVE-100-125096

OVAL: 🔍

SecurityFocus: 105467 - Microsoft Windows Kernel 'Win32k.sys' CVE-2018-8453 Local Privilege Escalation Vulnerability
SecurityTracker: 1041828

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

Entryinfo

Created: 10/10/2018 11:50
Updated: 10/13/2025 02:35
Changes: 10/10/2018 11:50 (87), 03/31/2020 20:44 (5), 05/23/2023 13:59 (6), 04/22/2024 16:29 (25), 06/16/2024 17:09 (2), 07/04/2024 23:24 (2), 07/24/2024 22:19 (3), 08/25/2024 11:44 (4), 08/25/2024 11:47 (1), 09/09/2024 22:29 (1), 10/13/2025 02:35 (1)
Complete: 🔍
Committer: misc
Cache ID: 216::103

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

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