MQ Appliance vulnerability

What happened

IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication.

Affected versions

MQ Appliance: 9.4 LTS through 9.4.0.0 to 9.4.0.25 (custom); 9.4 CD through 9.4.1.0 to 9.4.5.2 (custom); 10.0.0.0 through 10.0.0.1 only (semver) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.