It was found that Diffie Hellman Client key exchange handling in NSS, was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.
Name: Hubert Kario (Red Hat)
This issue has been addressed in the following products:
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 5
Via RHSA-2016:2779 https://rhn.redhat.com/errata/RHSA-2016-2779.html