Cisco Unified Communications Manager CVE-2019-15272 Security Bypass Vulnerability

Description

Cisco Unified Communications Manager is prone to a security-bypass vulnerability. Successful exploits may allow an attacker to bypass certain security restrictions to perform unauthorized actions. This may aid in further attacks. This issue is tracked by Cisco Bug ID CSCvp14434.

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.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

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. 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.