#VU79225 Incorrect conversion between numeric types in Windows and Windows Server - CVE-2023-36900
Published: August 8, 2023 / Updated: May 13, 2024
Vulnerability identifier: #VU79225
Vulnerability risk: 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:P/U:Clear
CVE-ID: CVE-2023-36900
CWE-ID: CWE-681
Exploitation vector: Local access
Exploit availability:
Public exploit is 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 incorrect integer conversion in Windows Common Log File System driver (clfs.sys). A local user can create a specially crafted BLF file to trigger an incorrect integer calculation before allocating a buffer and execute arbitrary code on the system.
Remediation
Install updates from vendor's website.