Security Bulletin
Summary
IBM WebSphere Application Server Liberty using openidConnectServer feature could allow spoofing identity by an authenticated user. This has been addressed.
Vulnerability Details
CVEID: CVE-2020-4421
DESCRIPTION: IBM WebSphere Application Liberty 19.0.0.5 through 20.0.0.4 could allow an authenticated user using openidconnect to spoof another users identify. IBM X-Force ID: 180084.
CVSS Base score: 5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/180084 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Liberty for Java | 3.44 |
Remediation/Fixes
To upgrade to Liberty for Java 3.45-20200601-1056 or higher, you must re-stage or re-push your application
To find the current version of Liberty for Java in IBM Cloud being used, from the command-line Cloud Foundry client by running the following commands:
cf ssh <appname> -c cat "staging_info.yml"
Look for the following lines:
{"detected_buildpack":"Liberty for Java(TM) (WAR, liberty-19.0.0_9, buildpack-v3.44-20200430-1451, ibmjdk-1.8.0_sr5fp41-20190919, env)","start_command":".liberty/initial_startup.rb"}
To re-stage your application using the command-line Cloud Foundry client, use the following command:
cf restage <appname>
To re-push your application using the command-line Cloud Foundry client, use the following command:
cf push <appname>
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
05 Jun 2020: 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
07 October 2022
Initial Publish date:
05 June 2020
UID
ibm16220578