The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_3919.json
Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.
- Packet Storm Staff
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Red Hat Security Advisory
Synopsis:           Important: Migration Toolkit for Runtimes security, bug fix and enhancement update
Advisory ID:        RHSA-2024:3919-03
Product:            Migration Toolkit for Runtimes
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:3919
Issue date:         2024-06-13
Revision:           03
CVE Names:          CVE-2023-4639
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Summary: 
Migration Toolkit for Runtimes 1.2.6 release
Red Hat Product Security has rated this update as having a security impact of Important.
A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description:
Migration Toolkit for Runtimes 1.2.6 Images
Security Fix(es):
* undertow: Cookie Smuggling/Spoofing (CVE-2023-4639)
* jetty: Improper addition of quotation marks to user inputs in CgiServlet (CVE-2023-36479)
* css-tools: Improper Input Validation causes Denial of Service via Regular Expression (CVE-2023-26364)
* css-tools: regular expression denial of service (ReDoS) when parsing CSS (CVE-2023-48631)
* keycloak: path transversal in redirection validation (CVE-2024-1132)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Solution:
CVEs:
CVE-2023-4639
References:
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2166022
https://bugzilla.redhat.com/show_bug.cgi?id=2239630
https://bugzilla.redhat.com/show_bug.cgi?id=2250364
https://bugzilla.redhat.com/show_bug.cgi?id=2254559
https://bugzilla.redhat.com/show_bug.cgi?id=2262117