Security Bulletin: Denial of Service vulnerability in WebSphere Liberty may affect IBM Business Automation Workflow (CVE-2023-44487)

Summary

WebSphere Liberty is shipped with IBM Business Automation Workflow traditional to support Process Federation Server and User Management Services. WebSphere Liberty is also the application server for IBM Business Automation Workflow on Containers. A denial of service vulnerability has been reported for WebSphere Liberty.

Vulnerability Details

CVEID:CVE-2023-44487
**DESCRIPTION:**Multiple vendors are vulnerable to a denial of service, caused by a flaw in handling multiplexed streams in the HTTP/2 protocol. By sending numerous HTTP/2 requests and RST_STREAM frames over multiple streams, a remote attacker could exploit this vulnerability to cause a denial of service due to server resource consumption.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268044 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

V23.0.2 - 23.0.2-IF001
V23.0.1 - V23.0.1-IF005
V22.0.2 all fixes
V22.0.1 all fixes
V21.0.3 - V21.0.3-IF027
V21.0.2 all fixes
V20.0.0.2 all fixes
V20.0.0.1 all fixes

| affected
IBM Business Automation Workflow traditional| V23.0.2
V23.0.1
V22.0.1 - V22.0.2
V21.0.1 - V21.0.3
earlier unsupported releases| affected
IBM Business Automation Workflow Enterprise Service Bus| V23.0.1
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

V23.0.1 - V23.0.2
V22.0.1 - V22.0.2
V21.0.1 - V21.0.3
earlier unsupported releases

| Follow Security Bulletin: IBM WebSphere Application Server Liberty is vulnerable to a denial of service (CVE-2023-44487)

Workarounds and Mitigations

None