The FreeBSD Security Team has issued the following security warnings:
- FreeBSD-SA-09:11.ntpd – ntpd stack-based buffer-overflow vulnerability
- FreeBSD-SA-09:10.ipv6 – Missing permission check on SIOCSIFINFO_IN6 ioctl
- FreeBSD-SA-09:09.pipe – Local information disclosure via direct pipe writes
For background info, problem description, impact, workaround and solutions, have a look at the individual advisory pages.