Security Bulletin: Denial of Service vulnerability in Spring may affect IBM Business Automation Workflow - CVE-2023-20861

Summary

IBM Business Automation Workflow packages a vulnerable copy of Spring expressions in /BPM/Lombardi/lib.

Vulnerability Details

CVEID:CVE-2023-20861
**DESCRIPTION:**VMware Tanzu Spring Framework is vulnerable to a denial of service. By sending a specially crafted SpEL expression, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/250701 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

V22.0.2 - V22.0.2.IF003
V22.0.1 all fixes
V21.0.3 - V21.0.3-IF019
V21.0.2 all fixes
V20.0.0.2 all fixes
V20.0.0.1 all fixes

| affected
IBM Business Automation Workflow traditional| V22.0.1 - V22.0.2
V21.0.1 - V21.0.3.1| affected
IBM Business Automation Workflow traditional| V20.0.0.1 - V20.0.0.2
V19.0.0.1 - V19.0.0.3| not affected
IBM Business Automation Workflow Enterprise Service Bus| V22.0.2| affected

For earlier and unsupported versions of the products, IBM recommends upgrading to a fixed, supported version of the product.

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR DT209212 as soon as practical.

Workarounds and Mitigations

None