Medium Severity

IBM Security Bulletin: IBM MQ and IBM MQ Appliance command server is vulnerable to a denial of service attack caused by specially crafted PCF messages (CVE-2019-4378)

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An error was found within the IBM MQ and IBM MQ Appliance Command Server PCF logic that means an attacker can cause a denial of service attack by sending a specially crafted PCF message. Doing so will cause the Command Server to crash, which will prevent further administrative commands from being executed against queue managers.

CVE(s): CVE-2019-4378

Affected product(s) and affected version(s):

IBM WebSphere MQ V7.1 versions 7.1.0.0 – 7.1.0.9 IBM WepSphere MQ V7.5 versions 7.5.0.0 – 7.5.0.9 IBM MQ and IBM MQ Appliance V8 versions 8.0.0.0 – 8.0.0.12 IBM MQ V9.0LTS versions 9.0.0.0 – 9.0.0.6 IBM MQ and IBM MQ Appliance V9.1 LTS versions 9.1.0.0 – 9.1.0.2 IBM MQ and IBM MQ Appliance V9.1 CD versions 9.1.0 – 9.1.2

Refer to the following reference URLs for remediation and additional vulnerability details:
Source Bulletin: https://supportcontent.ibm.com/support/pages/node/886885
X-Force Database: https://exchange.xforce.ibmcloud.com/vulnerabilities/162084

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