CVE-2020-4376 Denial of service in MQ for HPE NonStop

Medium 5.3 Published 1 Jul 2020 Updated 17 Sep 2024

An attacker can cause a denial of service in IBM MQ due to an error in the pubsub logic, affecting system availability.

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-2020-4376?

CVE-2020-4376 is a medium-severity denial of service vulnerability in IBM MQ for HPE NonStop, published on 1 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM MQ, IBM MQ Appliance, IBM MQ for HPE NonStop 8.0.4 and 8.1.0 could allow an attacker to cause a denial of service caused by an error within the pubsub logic. IBM X-Force ID: 179081.

Which versions are affected by CVE-2020-4376?

It affects 1 product.

Products include Ibm Mq for Hpe Nonstop.

How do I fix CVE-2020-4376?

No fix has been published for CVE-2020-4376 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-2020-4376 being exploited?

There is no known exploitation of CVE-2020-4376 in the wild and no public exploit code.

Sources

Also known as GHSA-px4f-6m2q-8v75.