IBM Support

Security Bulletin: IBM MQ is vulnerable to an issue within IBM® Runtime Environment Java™ Technology Edition (CVE-2020-27221)

Security Bulletin


Summary

An issue was identified in the IBM® Runtime Environment Java™ Technology Edition shipped with IBM MQ.

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

Affected Product(s) Version(s)
IBM MQ 9.2 LTS
IBM MQ 9.1 LTS
IBM MQ 9.0 LTS
IBM MQ 9.2 CD
IBM MQ 9.1 CD
IBM MQ 8.0

Remediation/Fixes

This issue has been addressed under the following APARs:
  • Version 8 - IT35343
  • Version 9.0 - IT35811
  • Version 9.1 - IT35811
  • Version 9.2 - IT35540

IBM MQ 8

Apply Fix Pack 8.0.0.16

IBM MQ 9.0

Appy interim fix for APAR IT35811

IBM MQ 9.1

Apply interim fix for APAR IT35811

IBM MQ 9.2 LTS

Apply Fix Pack 9.2.0.2

IBM MQ 9.1 CD & 9.2 CD

Upgrade to IBM MQ 9.2.2

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

14 May 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location

Worldwide

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"Java","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF002","label":"AIX"}],"Version":"8.0.0, 9.0.0, 9.1.0, 9.2.0","Edition":"All","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
20 May 2021

UID

ibm16453367