Security Bulletin: IBM MQ is vulnerable to a buffer overflow vulnerability due to an error within the channel processing code (CVE-2020-4465)

Summary

An error was found within the channel processing code that could cause a buffer overflow.

Vulnerability Details

CVEID:CVE-2020-4465
**DESCRIPTION:**IBM MQ, IBM MQ Appliance, and IBM MQ for HPE NonStop 8.0, 9.1 CD, and 9.1 LTS are 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.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181562 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

IBM WebSphere MQ 7.1

Contact IBM Support and request a fix for APAR IT32141

IBM WebSphere MQ 7.5

Contact IBM Support and request a fix for APAR IT32141

IBM MQ 8

Apply FixPack 8.0.0.15

IBM MQ 9.0 LTS

Apply FixPack 9.0.0.10

IBM MQ 9.1 LTS

Apply FixPack 9.1.0.6

IBM MQ 9.1 CD

Upgrade to IBM MQ 9.1.5

Workarounds and Mitigations

None