PORTSERV.exe in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and DeltaV ProEssentials Scientific Graph 5.0.0.6 allows remote attackers to cause a denial of service (daemon crash) via a crafted (1) TCP or (2) UDP packet to port 111.
http://www.us-cert.gov/control_systems/pdf/ICSA-12-138-01.pdf
http://www.securityfocus.com/bid/53591