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Windows Kernel

CVE-2018-8233 — Win32k Elevation of Privilege Vulnerability

Important CVSS 7.8 2018-06 archive

Executive Summary

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. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how Win32k handles objects in memory.

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Jun 12 2018
Last Updated Jun 12 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
Temporal Score: 7.8

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

3 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1803 for 32-bit Systems 4284835 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for x64-based Systems 4284835 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1803 (Server Core Installation) 4284835 (Security Update) Important Elevation of Privilege Yes

Patches

1 patch
Article Type Restart
4284835 Security Update Yes

Known Exploits

Acknowledgments

Georgios Baltas of MSRC Vulnerabilities & Mitigations Team

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