Information disclosure in Keycloak - CVE-2020-1744
Published: May 5, 2020
Vulnerability identifier: #VU27523
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1744
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists 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. A remote attacker can gain unauthorized access to sensitive information on the system.
Affected software
Keycloak
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)
How to mitigate CVE-2020-1744
Install updates from vendor's website.
Keycloak - update to 9.0.1
rh-sso7-keycloak (Red Hat package) - addressed in versions 4.8.18-1.Final_redhat_00001.1.el6sso, 4.8.18-1.Final_redhat_00001.1.el7sso, 4.8.18-1.Final_redhat_00001.1.el8sso
Red Hat Single Sign-On - update to 7.3.7
rh-sso7-keycloak (Red Hat package) - addressed in versions 4.8.18-1.Final_redhat_00001.1.el6sso, 4.8.18-1.Final_redhat_00001.1.el7sso, 4.8.18-1.Final_redhat_00001.1.el8sso
Red Hat Single Sign-On - update to 7.3.7