GitHub Advisoryadvisory · Maven

GHSA-w3g8-r9gw-qrh8 Denial of Service in Keycloak Server via Security Headers

MEDIUM Published 2025-01-13 Modified 2025-01-14 Official page ↗
Aliases
CVE-2024-11734
Ecosystem
Maven
Packages
org.keycloak:keycloak-quarkus-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-693
Reviewed
2025-01-13

Affected packages

• Maven org.keycloak:keycloak-quarkus-server: < 26.0.8 → fixed in 26.0.8

Description

A potential Denial of Service (DoS) vulnerability has been identified in Keycloak, which could allow an administrative user with the rights to change realm settings to disrupt the service. This is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that is already terminated, leading to a failure of said request. Service disruption may happen, users will be unable to access applications relying on Keycloak, or any of the consoles provided by Keycloak itself on the affected realm.

Related

Alias · CVE (1)

  • CVE-2024-11734 A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to… vulnerability

Weakness · CWE (1)

  • CWE-693 Protection Mechanism Failure weakness

References