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CVE-2024-11734: Org.keycloak:keycloak-quarkus-server: denial of service in keycloak server via security headers

Description

A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to disrupt the service. This action is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that has already been terminated, leading to the failure of said request.

Classification

CVE ID: CVE-2024-11734

Affected Products

Vendor: Red Hat

Product: Red Hat build of Keycloak 26.0

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 30.53% (scored less or equal to compared to others)

EPSS Date: 2025-02-12 (when was this score calculated)

References

https://access.redhat.com/errata/RHSA-2025:0299
https://access.redhat.com/errata/RHSA-2025:0300
https://access.redhat.com/security/cve/CVE-2024-11734
https://bugzilla.redhat.com/show_bug.cgi?id=2328846

Timeline