A flaw was found in Wildfly from version 11. The ElytronManagedThread in Elytron subsystem stores a SecurityIdentity to run the thread as. These threads do not necessarily terminate if the keep alive time has not expired. This could cause a shared thread to use the wrong security identity when executing.
Acknowledgments: Name: James Perkins (Red Hat)
This issue has been addressed in the following products: Red Hat JBoss Enterprise Application Platform Via RHSA-2019:1106 https://access.redhat.com/errata/RHSA-2019:1106
This issue has been addressed in the following products: Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 6 Via RHSA-2019:1107 https://access.redhat.com/errata/RHSA-2019:1107
This issue has been addressed in the following products: Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 7 Via RHSA-2019:1108 https://access.redhat.com/errata/RHSA-2019:1108
This issue has been addressed in the following products: Red Hat Single Sign-On 7.3.1 zip Via RHSA-2019:1140 https://access.redhat.com/errata/RHSA-2019:1140
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-3894