Privilege escalation in Freebsd
CVE-2023-5978
In versions of FreeBSD 13-RELEASE before 13-RELEASE-p5, under certain circumstances the cap_net libcasper(3) service incorrectly validates that updated constraints are strictly subsets of the active constraints. When only a list of resolvable domain names was specified without setting any other limitations, an application could submit a new list of domains including include entries not previously listed. This could permit the application to resolve domain names that were previously restricted.
Vulnerability class: Privilege Escalation
EPSS: 0.005 (40.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Freebsd — versions 13.2, 13.2-RELEASE
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secteam@freebsd.org (vendor-advisory, Vendor Advisory)
- secteam@freebsd.org
Frequently asked questions
- What is CVE-2023-5978?
- CVE-2023-5978 is a high-severity vulnerability in Freebsd, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2023-11-08.
- How severe is CVE-2023-5978?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-5978 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.