Security Bulletin: The IBM® Engineering Lifecycle Engineering products using IBM WebSphere Application Server Liberty is vulnerable to a denial of service (CVE-2023-44487)

Summary

IBM WebSphere Application Server Liberty is vulnerable to a denial of service with the servlet-3.1, servlet-4.0, servlet-5.0, or servlet-6.0 feature with the HTTP/2 protocol enabled. Following IBM® Engineering Lifecycle Engineering products are vulnerable to this attack, it has been addressed in this bulletin: Jazz Foundation, IBM Engineering Workflow Management, Global Configuration Management

Vulnerability Details

Refer to the security bulletin(s) listed in the Remediation/Fixes section

Affected Products and Versions

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the APAR PH57878. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature. To determine if the HTTP/2 protocol is enabled with Liberty Servlet features see HTTP/2 Support for Liberty.

For IBM WebSphere Application Server Liberty 18.0.0.2 - 23.0.0.11 using the servlet-3.1, servlet-4.0, servlet-5.0, or servlet-6.0 feature(s) with the HTTP/2 protocol enabled:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH57878
--OR–
· Apply Liberty Fix Pack 23.0.0.12 or later (targeted availability 4Q2023).

If any of the mentioned affected product is deployed on one of the above versions, Please follow the instruction given in the following article.

Link: <https://www.ibm.com/support/pages/node/7076252&gt;

Workarounds and Mitigations

None