Security Bulletin: IBM MQ Appliance is affected by a Java SE vulnerability (CVE-2020-27221)

Summary

IBM MQ Appliance has resolved a Java SE vulnerability.

Vulnerability Details

CVEID:CVE-2020-27221
**DESCRIPTION:**Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/195353 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

This vulnerability is addressed by APARs IT35811 and IT35540

IBM MQ Appliance version 9.1 LTS

Apply iFix IT35811, or later.

IBM MQ Appliance version 9.2 LTS

Apply fixpack 9.2.0.2, or later.

IBM MQ Appliance version 9.1 CD and 9.2 CD

Upgrade to 9.2.2 CD release, or later.

Workarounds and Mitigations

None