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GHSA-c25h-c27q-5qpv: Keycloak leaks configured LDAP bind credentials through the Keycloak admin console

Impact

The LDAP testing endpoint allows to change the Connection URL independently of and without having to re-enter the currently configured LDAP bind credentials. An attacker with admin access (permission manage-realm) can 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/compromised a user with sufficient privileges can leak domain credentials and can now attack the domain.

Acknowledgements

Special thanks to Simon Wessling for reporting this issue and helping us improve our project

ghsa
#mac#git#java#ldap#auth#maven#ssl
  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2024-5967

Keycloak leaks configured LDAP bind credentials through the Keycloak admin console

Low severity GitHub Reviewed Published Jun 21, 2024 in keycloak/keycloak • Updated Jun 21, 2024

Package

maven org.keycloak:keycloak-ldap-federation (Maven)

Affected versions

= 25.0.0

<= 22.0.11

>= 23.0.0, <= 24.0.5

Patched versions

25.0.1

22.0.12

24.0.6

Impact

The LDAP testing endpoint allows to change the Connection URL independently of and without having to re-enter the currently configured LDAP bind credentials. An attacker with admin access (permission manage-realm) can 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/compromised a user with sufficient privileges can leak domain credentials and can now attack the domain.

Acknowledgements

Special thanks to Simon Wessling for reporting this issue and helping us improve our project

References

  • GHSA-c25h-c27q-5qpv
  • https://nvd.nist.gov/vuln/detail/CVE-2024-5967
  • https://access.redhat.com/security/cve/CVE-2024-5967
  • https://bugzilla.redhat.com/show_bug.cgi?id=2292200

Published to the GitHub Advisory Database

Jun 21, 2024

Last updated

Jun 21, 2024

Related news

GHSA-gmrm-8fx4-66x7: Keycloak: Leak of configured LDAP bind credentials

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.