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Vulnerability of WildFly: privilege escalation via FORM Authentication Session Fixation

Synthesis of the vulnerability 

An attacker can bypass restrictions via FORM Authentication Session Fixation of WildFly, in order to escalate his privileges.
Impacted products: JBoss EAP by Red Hat, Red Hat SSO.
Severity of this bulletin: 2/4.
Creation date: 17/08/2020.
Références of this threat: CVE-2020-10714, RHSA-2020:3461-01, RHSA-2020:3462-01, RHSA-2020:3463-01, RHSA-2020:3464-01, RHSA-2020:3495-01, RHSA-2020:3496-01, RHSA-2020:3497-01, RHSA-2020:3501-01, RHSA-2020:3637-01, RHSA-2020:3638-01, RHSA-2020:3639-01, RHSA-2020:3642-01, VIGILANCE-VUL-33093.

Description of the vulnerability 

An attacker can bypass restrictions via FORM Authentication Session Fixation of WildFly, in order to escalate his privileges.
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This computer threat announce impacts software or systems such as JBoss EAP by Red Hat, Red Hat SSO.

Our Vigil@nce team determined that the severity of this computer vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this cybersecurity alert.

Solutions for this threat 

Red Hat JBoss EAP: version 7.2.9.
The version 7.2.9 is fixed:
  https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.2/

Red Hat JBoss EAP: version 7.3.2.
The version 7.3.2 is fixed:
  https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.3/

Red Hat Single Sign-On: version 7.4.2.
The version 7.4.2 is fixed:
  https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso&downloadType=securityPatches&version=7.4
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