The (1) SAPDatabase and (2) SAPInstance scripts in OCF Resource Agents (aka resource-agents or cluster-agents) 1.0.3 in Linux-HA place a zero-length directory name in the LD_LIBRARY_PATH, which allows local users to gain privileges via a Trojan horse shared library in the current working directory.
https://bugzilla.redhat.com/show_bug.cgi?id=639044
http://www.vupen.com/english/advisories/2011/0416
http://www.redhat.com/support/errata/RHSA-2011-1580.html
http://www.redhat.com/support/errata/RHSA-2011-1000.html
http://www.redhat.com/support/errata/RHSA-2011-0264.html