CVE-2020-4869 Denial of service in MQ Appliance

Medium 5.3 Published 11 Jan 2021 Updated 16 Sep 2024

A remote attacker can cause a denial of service on IBM MQ Appliance by sending a specially crafted SNMP query that triggers a buffer overflow.

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-2020-4869?

CVE-2020-4869 is a medium-severity denial of service vulnerability in IBM MQ Appliance, published on 11 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM MQ Appliance 9.2 CD and 9.2 LTS is vulnerable to a denial of service, caused by a buffer overflow. A remote attacker could send a specially crafted SNMP query to cause the appliance to reload. IBM X-Force ID: 190831.

Weakness: CWE-120

Which versions are affected by CVE-2020-4869?

It affects 1 product.

Products include Ibm Mq Appliance.

How do I fix CVE-2020-4869?

No fix has been published for CVE-2020-4869 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-2020-4869 being exploited?

There is no known exploitation of CVE-2020-4869 in the wild and no public exploit code.

Sources

Also known as GHSA-r6xm-wq7q-jr6c.