Permissions, Privileges, and Access Controls in FreeBSD - CVE-2020-7452
Published: March 19, 2020
Vulnerability identifier: #VU26238
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-7452
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect usage of potentially user-controlled pointer within the epair interface in kernel. A local vnet jailed user with root level access (or the PRIV_NET_IFCREATE privilege) cab cause the system panic or execute arbitrary code kernel privileges on the system.
How to mitigate CVE-2020-7452
Install updates from vendor's website.