Use-after-free in Windows and Windows Server - CVE-2022-34699
Published: August 9, 2022 / Updated: August 19, 2022
Vulnerability identifier: #VU66222
CSH Severity: Low
CVSSv4.0: 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:U/U:Clear
CVE-ID: CVE-2022-34699
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the win32kbase.sys driver in Microsoft Windows. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with SYSTEM privileges.
Remediation
Install updates from vendor's website.