What’s Vulnerable › Vulnerabilities

CVE-2022-3916: Keycloak: session takeover with oidc offline refreshtokens

Description

A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.

Affected products

How to fix

Upgrade to a fixed version: Keycloak 20.0.2. Check the vendor advisory for mitigations.

References

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