A vulnerability in the authentication service of the Cisco Unified Communications Manager IM&P Service, Cisco TelePresence VCS, and Cisco Expressway Series Denial of Service Vulnerability High Advisory ID: cisco-sa-20190605-cucm-imp-dos First Published: 2019 June 5 16:00 GMT Version 1.1: Final Workarounds: No workarounds available. The vulnerability is due to insufficient controls for specific memory operations. An attacker could exploit this vulnerability by sending a malformed Extensible Messaging and Presence Protocol (XMPP) authentication request.”]
Source: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190605-cucm-imp-dos