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)

Security Bulletin

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

Affected Product(s)	Version(s)
Liberty for Java	3.37

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(TM) (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

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

Change History

14 May 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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Tips

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)