You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
{{ message }}
Keycloak's unvalidated cross-origin messages in checkLoginIframe leads to DDoS
High severity
GitHub Reviewed
Published
Apr 17, 2024
in
keycloak/keycloak
•
Updated Apr 27, 2024
A potential security flaw in the "checkLoginIframe" which allows unvalidated cross-origin messages, enabling potential DDoS attacks. By exploiting this vulnerability, attackers could coordinate to send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.
Acknowledgements
Special thanks to Adriano Márcio Monteiro from BRZTEC for reporting this issue and helping us improve our project.
A potential security flaw in the "checkLoginIframe" which allows unvalidated cross-origin messages, enabling potential DDoS attacks. By exploiting this vulnerability, attackers could coordinate to send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.
Acknowledgements
Special thanks to Adriano Márcio Monteiro from BRZTEC for reporting this issue and helping us improve our project.
References