CVE-2019-3868: Infoleak
Keycloak allows end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.
Other sources
Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2019-3868?
CVE-2019-3868 has been classified as a critical vulnerability due to the potential for session hijacking.
How do I fix CVE-2019-3868?
To fix CVE-2019-3868, upgrade Keycloak to version 6.0.1 or later.
What versions of Keycloak are affected by CVE-2019-3868?
CVE-2019-3868 affects Keycloak versions up to and including 6.0.0.
Can CVE-2019-3868 lead to data breaches?
Yes, CVE-2019-3868 can lead to data breaches by allowing attackers to hijack user sessions.
What type of attack does CVE-2019-3868 facilitate?
CVE-2019-3868 facilitates session hijacking attacks where an attacker can take control of a user's active session.