#VU20356 Permissions, Privileges, and Access Controls in FreeBSD - CVE-2019-5603
Published: August 21, 2019 / Updated: March 29, 2023
Vulnerability identifier: #VU20356
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-2019-5603
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
FreeBSD
FreeBSD
Software vendor:
FreeBSD Foundation
FreeBSD Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a reference count overflow within the mqueuefs(5). A local user can obtain access to files, directories, sockets opened by processes owned by other users, including access to files outside of the jail. A local user can run a specially crafted application to gain elevated privileges on the system.
Remediation
Install updates from vendor's website.