Keycloak: leak of configured ldap bind credentials through the keycloak admin console

2.7 CVSS

Vulnerability Description

A vulnerability was found in Keycloak. The LDAP testing endpoint allows changing the Connection URL independently without re-entering the currently configured LDAP bind credentials. This flaw allows an attacker with admin access (permission manage-realm) to change the LDAP host URL ("Connection URL") to a machine they control. The Keycloak server will connect to the attacker's host and try to authenticate with the configured credentials, thus leaking them to the attacker. As a consequence, an attacker who has compromised the admin console or compromised a user with sufficient privileges can leak domain credentials and attack the domain.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Upstream acknowledges Simon Wessling as the original reporter.

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Affected Vendor

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Affected Software

Red Hat Build of Keycloak, Red Hat build of Keycloak 22, Red Hat Single Sign-On 7, Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Single Sign-On 7.6 for RHEL 8, Red Hat Single Sign-On 7.6 for RHEL 9, RHEL-8 based Middleware Containers

Vulnerable Versions:

0, 23.0.0, 25.0.0, 22.0.12-1, 22-17, 22-20, 0:18.0.16-1.redhat_00001.1.el7sso, 0:18.0.16-1.redhat_00001.1.el8sso, 0:18.0.16-1.redhat_00001.1.el9sso, 7.6-52