title: Red Hat Security Advisory: ntp security, bug fix, and enhancement update
description: ntp: vallen in extension fields are not validated ntp: drop packets with source address ::1 ntp: vallen in extension fields are not validated ntp: drop packets with source address ::1 ntp: ntpd accepts unauthenticated packets with symmetric key crypto ntp: authentication doesn't protect symmetric associations against DoS attacks ntp: ntp-keygen may generate non-random symmetric keys on big-endian systems
cpes: cpe:/o:redhat:enterprise_linux:6::client cpe:/o:redhat:enterprise_linux:6::computenode cpe:/o:redhat:enterprise_linux:6::server cpe:/o:redhat:enterprise_linux:6::workstation