CVE-2020-4465 Memory corruption in MQ Appliance

Medium 5.3 Published 28 Jul 2020 Updated 16 Sep 2024

A remote attacker can cause a denial of service in IBM MQ by exploiting a buffer overflow in channel processing code using an older client.

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-2020-4465?

CVE-2020-4465 is a medium-severity memory corruption vulnerability in IBM MQ Appliance, published on 28 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, and IBM MQ for HPE NonStop 8.0, 9.1 CD, and 9.1 LTS is vulnerable to a buffer overflow vulnerability due to an error within the channel processing code. A remote attacker could overflow the buffer using an older client and cause a denial of service. IBM X-Force ID: 181562.

Weakness: CWE-120

Which versions are affected by CVE-2020-4465?

It affects 1 product.

Products include Ibm Mq Appliance.

How do I fix CVE-2020-4465?

No fix has been published for CVE-2020-4465 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-4465 being exploited?

There is no known exploitation of CVE-2020-4465 in the wild and no public exploit code.

Sources

Also known as GHSA-xr77-4rxw-6357.