CVE-2019-4560 Denial of service in MQ

Medium 5.3 Published 16 Dec 2019 Updated 16 Sep 2024

Attackers can cause a denial of service in IBM MQ by sending poorly formatted messages through channels.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-4560?

CVE-2019-4560 is a medium-severity denial of service vulnerability in IBM MQ, published on 16 Dec 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM MQ and IBM MQ Appliance 9.1 CD, 9.1 LTS, 9.0 LTS, and 8.0 is vulnerable to a denial of service attack caused by channels processing poorly formatted messages. IBM X-Force ID: 166357.

Which versions are affected by CVE-2019-4560?

It affects 1 product.

Products include Ibm Mq Appliance.

How do I fix CVE-2019-4560?

No fix has been published for CVE-2019-4560 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-4560 being exploited?

There is no known exploitation of CVE-2019-4560 in the wild and no public exploit code.

Sources

Also known as GHSA-hc3j-rrgh-fm8r.