Security Bulletin: WebSphere Application Server Liberty is vulnerable to Cross-site Scripting (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 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.
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 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.
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

The recommended solution is to apply the interim fix or Fix Pack containing APAR PH22080 for each named product as soon as practical.

For WebSphere Application Server Liberty 17.0.0.3 - 20.0.0.3 using the oauth-2.0, openidConnectServer-1.0, openidConnectClient-1.0, or samlWeb-2.0 features:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH22080
--OR–
· Apply Liberty Fix Pack 20.0.0.4 or later (targeted availability 1Q2020).** **

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations

None