Arch Linux Security Advisory ASA-202106-53 ========================================== Severity: Medium Date : 2021-06-22 CVE-ID : CVE-2020-35509 Package : keycloak Type : certificate verification bypass Remote : Yes Link : https://security.archlinux.org/AVG-2084 Summary ======= The package keycloak before version 14.0.0-1 is vulnerable to certificate verification bypass. Resolution ========== Upgrade to 14.0.0-1. # pacman -Syu "keycloak>=14.0.0-1" The problem has been fixed upstream in version 14.0.0. Workaround ========== None. Description =========== A security issue has been found in Keycloak before version 14.0.0. Depending on the webserver configuration, a malicious user can supply an expired certificate and it would be accepted by Keycloak direct- grant authenticator. This is because Keycloak does not trigger the appropriate timestamp validation. Impact ====== A user could authenticate with an expired certificate. References ========== https://bugzilla.redhat.com/show_bug.cgi?id=1912427 https://issues.redhat.com/browse/KEYCLOAK-16450 https://github.com/keycloak/keycloak/pull/8067 https://github.com/keycloak/keycloak/commit/478319348bdfdb9b6d39122f41edf2af... https://security.archlinux.org/CVE-2020-35509