Buffer overflow in Windows Server and Windows - CVE-2018-8589
Published: November 13, 2018 / Updated: June 2, 2020
Vulnerability identifier: #VU15834
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2018-8589
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Microsoft
Affected software:
Windows Server
Windows
Windows Server
Windows
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within Win32k.sys driver. A local user can create a specially crafted application, run it on vulnerable system and execute code withe superuser privileges.
Note: this vulnerability is being actively exploited in limited targeted attacks.
How to mitigate CVE-2018-8589
Install updates from vendor's website.