Red Hat Security Advisory 2016-0591-01 – Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. The nss-util packages provide utilities for use with the Network Security Services libraries. Netscape Portable Runtime provides platform independence for non-GUI operating system facilities. The following packages have been upgraded to a newer upstream version: nss 3.21.0, nss-util 3.21.0, nspr 4.11.0.