Cisco Unified CM CVE-2019-12711 XML Entity Expansion Multiple Security Vulnerabilities

Description

Cisco Unified Communications Manager is prone to multiple security vulnerabilities. An attacker can exploit these issues to gain access to sensitive information or cause denial-of-service conditions. These issues are being tracked by Cisco Bug ID CSCvp46079.

Technologies Affected

• Cisco Unified Communications Manager 10.5(2)
• Cisco Unified Communications Manager 11.5(1)SU5
• Cisco Unified Communications Manager 12.0(1)SU2
• Cisco Unified Communications Manager 12.5(1)
• Cisco Unified Communications Manager Session Management Edition (SME) 10.5(2)
• Cisco Unified Communications Manager Session Management Edition (SME) 11.5(1)SU5
• Cisco Unified Communications Manager Session Management Edition (SME) 12.0(1)SU2
• Cisco Unified Communications Manager Session Management Edition (SME) 12.5(1)

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.