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Keycloak leaks configured LDAP bind credentials through the Keycloak admin console

Low severity GitHub Reviewed Published Jun 21, 2024 in keycloak/keycloak • Updated Jul 1, 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

Description

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

@rmartinc rmartinc published to keycloak/keycloak Jun 21, 2024
Published to the GitHub Advisory Database Jun 21, 2024
Reviewed Jun 21, 2024
Last updated Jul 1, 2024

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.044%
(15th percentile)

Weaknesses

CVE ID

CVE-2024-5967

GHSA ID

GHSA-c25h-c27q-5qpv

Source code

Credits

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