CVE-2024-11734

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

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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.

Se encontró una vulnerabilidad de denegación de servicio en Keycloak que podría permitir que un usuario administrativo con derecho a cambiar la configuración del dominio interrumpa el servicio. Esta acción se realiza modificando cualquiera de los encabezados de seguridad e insertando nuevas líneas, lo que hace que el servidor de Keycloak escriba en una solicitud que ya se ha finalizado, lo que provoca el fracaso de dicha solicitud.

New images are available for Red Hat build of Keycloak 26.0.8 and Red Hat build of Keycloak 26.0.8 Operator, running on OpenShift Container Platform. Issues addressed include a denial of service vulnerability.

*Credits: Red Hat would like to thank Chase Bowman (Contract Security) for reporting this issue.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-11-26 CVE Reserved
2025-01-14 CVE Published
2025-03-19 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-693: Protection Mechanism Failure

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2025:0299	2025-01-14
https://access.redhat.com/errata/RHSA-2025:0300	2025-01-14
https://access.redhat.com/security/cve/CVE-2024-11734	2025-01-13
https://bugzilla.redhat.com/show_bug.cgi?id=2328846	2025-01-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Build Keycloak Search vendor "Redhat" for product "Build Keycloak"				*		-		Affected
Redhat Search vendor "Redhat"		Build Of Keycloak Search vendor "Redhat" for product "Build Of Keycloak"				*		-		Affected
Redhat Search vendor "Redhat"		Jboss Enterprise Application Platform Search vendor "Redhat" for product "Jboss Enterprise Application Platform"				*		-		Affected
Redhat Search vendor "Redhat"		Jbosseapxp Search vendor "Redhat" for product "Jbosseapxp"				*		-		Affected