Vulnerability identifier: #VU60004
Vulnerability risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-264
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Util-linux
Universal components / Libraries /
Libraries used by multiple products
Vendor: kernel.org
Description
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to improper parsing of the /proc/self/mountinfo file in libmount. A local user can unmount other user's filesystems that are either world-writable themselves or mounted in a world-writable directory.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Util-linux: 2.2 - 2.37.2
External links
http://www.openwall.com/lists/oss-security/2022/01/24/2
http://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.