Security Bulletin: WebSphere Application Server Liberty is vulnerable to Cross-site Scripting that affects Liberty for Java for IBM Cloud (CVE-2020-4303, CVE-2020-4304)

Summary

There is a cross-site scripting vulnerability in the OAuth, OpenID Connect and SAML features. This has been addressed.

Vulnerability Details

CVEID:CVE-2020-4303
**DESCRIPTION:**IBM WebSphere Application Server - Liberty 17.0.0.3 through 20.0.0.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 176668.
CVSS Base score: 6.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/176668 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

CVEID:CVE-2020-4304
**DESCRIPTION:**IBM WebSphere Application Server - Liberty 17.0.0.3 through 20.0.0.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 176670.
CVSS Base score: 6.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/176670 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

To upgrade to Liberty for Java 3.44-20200430-1451 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™ (WAR, liberty-19.0.0_9, buildpack-v3.37-20191002-1726, 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