The packet-processing microcode in Cisco IOS 15.2(2)EA, 15.2(2)EA1, 15.2(2)EA2, and 15.2(4)EA on Industrial Ethernet 4000 devices and 15.2(2)EB and 15.2(2)EB1 on Industrial Ethernet 5000 devices allows remote attackers to cause a denial of service (packet data corruption) via crafted IPv4 ICMP packets, aka Bug ID CSCuy13431.
https://ics-cert.us-cert.gov/advisories/ICSA-16-175-01
http://www.securitytracker.com/id/1035898
http://www.securityfocus.com/bid/90665
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160513-ies