The following updates has been released for CentOS Linux 6 and 7:
CESA-2017:2831 Critical CentOS 6 firefox Security UpdateFirefox / NSS Updates for CentOS 6 / 7
CESA-2017:2831 Critical CentOS 7 firefox Security Update
CESA-2017:2832 Important CentOS 6 nss Security Update
CESA-2017:2832 Important CentOS 7 nss Security Update
