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Vulnerability of Keycloak: privilege escalation via FailedLogin Event BruteForceProtector Bypass

Synthesis of the vulnerability 

An attacker can bypass restrictions via FailedLogin Event BruteForceProtector Bypass of Keycloak, in order to escalate his privileges.
Vulnerable systems: RHEL, Red Hat SSO.
Severity of this threat: 2/4.
Creation date: 24/03/2020.
Références of this weakness: CERTFR-2020-AVI-179, CVE-2020-1744, RHSA-2020:0945-01, RHSA-2020:0946-01, RHSA-2020:0947-01, RHSA-2020:0951-01, RHSA-2020:0952-01, VIGILANCE-VUL-31862.

Description of the vulnerability 

An attacker can bypass restrictions via FailedLogin Event BruteForceProtector Bypass of Keycloak, in order to escalate his privileges.
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This weakness note impacts software or systems such as RHEL, Red Hat SSO.

Our Vigil@nce team determined that the severity of this threat note is medium.

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

An attacker with a expert ability can exploit this computer weakness.

Solutions for this threat 

Red Hat Single Sign-On: version 7.3.7.
The version 7.3.7 is fixed:
  https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso&downloadType=securityPatches&version=7.3

RHEL: new rh-sso7-keycloak packages.
New packages are available:
  RHEL 6: rh-sso7-keycloak 4.8.18-1.Final_redhat_00001.1.el6sso
  RHEL 7: rh-sso7-keycloak 4.8.18-1.Final_redhat_00001.1.el7sso
  RHEL 8: rh-sso7-keycloak 4.8.18-1.Final_redhat_00001.1.el8sso
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