Multiple Cisco Products CVE-2019-12678 Denial of Service Vulnerability

Description

Multiple Cisco Products are prone to a denial-of-service vulnerability. Attackers can exploit this issue to crash the affected device, denying service to legitimate users This issue is being tracked by Cisco Bug ID CSCvp45882.

Technologies Affected

• Cisco Adaptive Security Appliance (ASA) Software 9.0
• Cisco Adaptive Security Appliance (ASA) Software 9.1
• Cisco Adaptive Security Appliance (ASA) Software 9.10
• Cisco Adaptive Security Appliance (ASA) Software 9.12
• Cisco Adaptive Security Appliance (ASA) Software 9.2
• Cisco Adaptive Security Appliance (ASA) Software 9.3
• Cisco Adaptive Security Appliance (ASA) Software 9.4
• Cisco Adaptive Security Appliance (ASA) Software 9.4.1
• Cisco Adaptive Security Appliance (ASA) Software 9.5.1
• Cisco Adaptive Security Appliance (ASA) Software 9.6
• Cisco Adaptive Security Appliance (ASA) Software 9.7.1
• Cisco Adaptive Security Appliance (ASA) Software 9.8
• Cisco Adaptive Security Appliance (ASA) Software 9.9
• Cisco Firepower Threat Defense Software (FTD) 6.1.0
• Cisco Firepower Threat Defense Software (FTD) 6.2.0
• Cisco Firepower Threat Defense Software (FTD) 6.2.1
• Cisco Firepower Threat Defense Software (FTD) 6.2.2
• Cisco Firepower Threat Defense Software (FTD) 6.2.3
• Cisco Firepower Threat Defense Software (FTD) 6.3.0
• Cisco Firepower Threat Defense Software (FTD) 6.4.0

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.

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 including 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.