It was discovered that the fix for CVE-2017-12163 was not properly shipped in erratum RHSA-2017:2858 for Red Hat Gluster Storage 3.3 for RHEL 6.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-6556
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15087