A flaw was found in keycloak before version 9.0.1. When configuring an Conditional OTP Authentication Flow as a post login flow of an IDP, the failure login events for OTP are not being sent to the brute force protection event queue. So BruteForceProtector does not handle this events.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1744
Reference (s):
- https://access.redhat.com/security/cve/CVE-2020-1744
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1744