Security Bulletin: IBM WebSphere Application Server Liberty is vulnerable to a denial of service (CVE-2023-38737)

Summary

IBM WebSphere Application Server Liberty is vulnerable to a denial of service with the restfulWS-3.0 or restfulWS-3.1 feature enabled. This has been addressed in the remediation section.

Vulnerability Details

CVEID:CVE-2023-38737
**DESCRIPTION:**IBM WebSphere Application Server Liberty is vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/262567 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

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 PH56004. 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.

For IBM WebSphere Application Server Liberty 22.0.0.13 - 23.0.0.7 using the restfulWS-3.0 or restfulWS-3.1 feature(s):
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH56004
--OR–
· Apply Liberty Fix Pack 23.0.0.8 or later (targeted availability 3Q2023).

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations

None