Security Bulletin: A cross site scripting security vulnerability has been identified with Case Builder component shipped with IBM Business Automation Workflow (CVE-2019-4426)

Security Bulletin

Summary

Case Builder component shipped with IBM Business Automation Workflow 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.

Vulnerability Details

CVEID: CVE-2019-4426
DESCRIPTION: Case Builder component shipped with IBM Business Automation Workflow and IBM Case Manager 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: 5.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/162772 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Business Automation Workflow	18.0 19.0

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR PJ45724 as soon as practical:

IBM Business Automation Workflow

For IBM Business Automation Workflow V18.0.0.0 through V19.0.0.2

· Upgrade to at least IBM Business Automation Workflow V18.0.0.1 as required by iFix and then apply iFix PJ45724
--OR--
· Apply cumulative fix Business Automation Workflow V19.0.0.3 (planned for end of Q4 2019)

Workarounds and Mitigations

- There are preventative methods for cross-site scripting vulnerabilities. The following are just a few.
a) Use HTTPOnly flag in the application server
b) Use additional HTTP headers for added security

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

12 Dec 2019: 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: A cross site scripting security vulnerability has been identified with Case Builder component shipped with IBM Business Automation Workflow (CVE-2019-4426)