Main Vulnerability Database Vulnerabilities #VU60005

Permissions, Privileges, and Access Controls in Util-linux - CVE-2021-3996

Published: January 25, 2022

Vulnerability identifier: #VU60005

CSH Severity: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2021-3996

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
Util-linux

Software vendor:
kernel.org

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper UID check in libmount. A local user can unmount FUSE filesystems of users with similar UID.

Install updates from vendor's website.