Cisco IOS Software PROFINET denial of service (cisco-sa-20170927-profinet)
High Nessus Plugin ID 103670
SynopsisThe remote device is missing a vendor-supplied security patch.
DescriptionAccording to its self-reported version and configuration, the Cisco IOS software running on the remote device is affected by a denial of service vulnerability in the PROFINET Discovery and Configuration Protocol (PN-DCP) feature. An unauthenticated, remote attacker can exploit this, via specially crafted PN-DCP requests, to cause the switch to stop processing traffic, requiring a device restart to regain functionality.
SolutionUpgrade to the relevant fixed version referenced in Cisco bug ID CSCuz47179.