In fence-agents before 4.0.17 does not verify remote SSL certificates in the fence_cisco_ucs.py script which can potentially allow for man-in-the-middle attackers to spoof SSL servers via arbitrary SSL certificates.
https://security-tracker.debian.org/tracker/CVE-2014-0104
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2014-0104