CVE-2023-5978 Information

Description

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.

Reference

https://security.freebsd.org/advisories/FreeBSD-SA-23:16.cap_net.asc