CVE-2020-4375 Denial of service in MQ Appliance

Medium 5.9 Published 28 Jul 2020 Updated 16 Sep 2024

An attacker can cause a denial of service in IBM MQ by triggering a memory leak during dynamic queue creation.

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

What is CVE-2020-4375?

CVE-2020-4375 is a medium-severity denial of service vulnerability in IBM MQ Appliance, published on 28 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM MQ, IBM MQ Appliance, IBM MQ for HPE NonStop 8.0, 9.1 CD, and 9.1 LTS could allow an attacker to cause a denial of service due to a memory leak caused by an error creating a dynamic queue. IBM X-Force ID: 179080.

Weakness: CWE-401

Which versions are affected by CVE-2020-4375?

It affects 1 product.

Products include Ibm Mq Appliance.

How do I fix CVE-2020-4375?

No fix has been published for CVE-2020-4375 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-2020-4375 being exploited?

There is no known exploitation of CVE-2020-4375 in the wild and no public exploit code.

Sources

Also known as GHSA-3qwg-86mf-pw6m.