A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter request_uri. This flaw allows an attacker to use this parameter to execute a Server-side request forgery (SSRF) attack.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10770
Reference (s):
- http://packetstormsecurity.com/files/164499/Keycloak-12.0.1-Server-Side-Request-Forgery.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1846270
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=1846270