Heartbleed

The Layer 7 Gateway image version 8.0 is built on RHEL 6.4, which can be confirmed by running the following command:

[root@l7demo ~]# cat /etc/*release
Red Hat Enterprise Linux Server release 6.4 (Santiago)
Red Hat Enterprise Linux Server release 6.4 (Santiago)

Per Red Hat, versions 6.4 and older of their platform were shipped with openSSL 1.0.0 and are therefore unaffected.
Ref: https://access.redhat.com/site/solutions/781793

See Answers and Articles on the Layer 7 support site regarding gateway version 8.1