IBM MQ and MQ Appliance CVE-2019-4560 Denial of Service Vulnerability

Description

IBM MQ is prone to a denial-of-service vulnerability. An attacker can exploit this issue to crash the process, denying service to legitimate users. The following versions of IBM MQ and MQ Appliance are affected: IBM MQ versions 9.1 CD, 9.1 LTS, 9.0 LTS and 8.0 are vulnerable. IBM MQ Appliance versions 9.1 CD, 9.1 LTS and 8.0 are vulnerable.

Technologies Affected

• IBM MQ Appliance 8.0
• IBM MQ Appliance 9.1 CD
• IBM MQ Appliance 9.1 LTS
• IBM mq 8.0
• IBM mq 9.0 LTS
• IBM mq 9.1 CD
• IBM mq 9.1 LTS

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 detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review logs regularly.

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