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

Security Bulletin


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

 

Affected Product(s)Version(s)Status
IBM Business Automation Workflow containers

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 traditionalV23.0.2
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 BusV23.0.1
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

 

Affected Product(s)Version(s)Remediation / Fix
IBM Business Automation Workflow containersV23.0.2Apply 23.0.2-IF002
IBM Business Automation Workflow containersV23.0.1Apply 23.0.1-IF006 or upgrade to 23.0.2-IF002
IBM Business Automation Workflow containersV21.0.3Apply 21.0.3-IF028
or upgrade to 23.0.1-IF006 or 23.0.2-IF002 or later
IBM Business Automation Workflow containersV23.0.1
V22.0.1 - V22.0.2
V21.0.1 - V21.0.2
V20.0.0.1 - V20.0.0.2
Upgrade to 21.0.3-IF028   
or upgrade to 23.0.2-IF002 or later
IBM Business Automation Workflow traditional and IBM Business Automation Workflow Enterprise Service Bus

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

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

01 Mar 2024: 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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
01 March 2024

UID

ibm17129250