Security Bulletin: The version of WebSphere Liberty shipped with IBM MQ is vulnerable to CVE-2020-4590

Summary

IBM MQ ships a version of WebSphere Liberty to provide the Web Console functionality. This version of liberty is vulnerable to CVE-2020-4590.

Vulnerability Details

CVEID:CVE-2020-4590
**DESCRIPTION:**IBM WebSphere Application Server Liberty 17.0.0.3 through 20.0.0.9 running oauth-2.0 or openidConnectServer-1.0 server features is vulnerable to a denial of service attack conducted by an authenticated client. IBM X-Force ID: 184650.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/184650 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

This issue is addressed in MQ releases by APAR IT34473

IBM MQ versions 9.1 LTS

Apply Fixpack 9.1.0.7

IBM MQ version 9.2 LTS

Apply the WebSphere Liberty iFix listed on CVE-2020-4590

IBM MQ version 9.2 CD

Upgrade to IBM MQ 9.2.1

Workarounds and Mitigations

None