Keycloak Authentication Bypass via Unvalidated Client Step-Up
CVE-2023-3597 Published on April 25, 2024
Keycloak: secondary factor bypass in step-up authentication
A flaw was found in Keycloak, where it does not correctly validate its client step-up authentication in org.keycloak.authentication. This flaw allows a remote user authenticated with a password to register a false second authentication factor along with an existing one and bypass authentication.
Vulnerability Analysis
CVE-2023-3597 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Timeline
Reported to Red Hat.
Made public. 280 days later.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2023-3597 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2023-3597
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.