What it is about

Keycloak ermöglicht Single Sign-On mit Identity and Access Management für moderne Anwendungen und Dienste. Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen, und um einen Cross-Site Scripting Angriff durchzuführen.

Under what conditions?

The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.

What can happen in the worst case

An attacker could use the vulnerability to

• Informationen offenzulegen
• Sicherheitsvorkehrungen zu umgehen
• einen Cross-Site Scripting Angriff durchzuführen

Am I affected?

Affected according to the BSI:

• Open Source Keycloak

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

According to the BSI there is no update yet. The vendor notices below name interim protective measures, if any.

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.