CVE-2019-3868: Exposure of Sensitive Information to an Unauthorized Actor

April 30, 2019 (updated August 3, 2021)

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.

References

www.securityfocus.com/bid/108061
access.redhat.com/errata/RHSA-2019:1140
access.redhat.com/errata/RHSA-2019:2998
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3868
github.com/advisories/GHSA-gc52-xj6p-9pxp
nvd.nist.gov/vuln/detail/CVE-2019-3868

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