Cisco IOS Software Precision Time Protocol Denial of Service Vulnerability

Vulnerability Description

A vulnerability in the Precision Time Protocol (PTP) subsystem of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Precision Time Protocol. The vulnerability is due to insufficient processing of PTP packets. An attacker could exploit this vulnerability by sending a custom PTP packet to, or through, an affected device. A successful exploit could allow the attacker to cause a DoS condition for the PTP subsystem, resulting in time synchronization issues across the network.

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ptp
• http://www.securitytracker.com/id/1041737
• http://www.securityfocus.com/bid/105427
• https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03