Bug 2328846 (CVE-2024-11734)

Summary: CVE-2024-11734 org.keycloak:keycloak-quarkus-server: Denial of Service in Keycloak Server via Security Headers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: asoldano, bbaranow, bmaxwell, boliveir, brian.stansberry, cdewolf, chazlett, darran.lofthouse, dkreling, dosoudil, drichtar, fjuma, istudens, ivassile, iweiss, jkoops, lgao, mosmerov, msochure, msvehla, nwallace, pdrozd, peholase, pesilva, pjindal, pmackay, pskopek, rmartinc, rowaters, rstancel, security-response-team, smaestri, sthorger, tom.jenkinson
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
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.
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Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Deadline: 2025-01-25   

Description OSIDB Bzimport 2024-11-26 03:59:59 UTC 
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.
Comment 2 errata-xmlrpc 2025-01-13 15:43:37 UTC 
This issue has been addressed in the following products:

  RHBK 26.0.8

Via RHSA-2025:0300 https://access.redhat.com/errata/RHSA-2025:0300
Comment 3 errata-xmlrpc 2025-01-13 15:48:51 UTC 
This issue has been addressed in the following products:

  Red Hat build of Keycloak 26.0

Via RHSA-2025:0299 https://access.redhat.com/errata/RHSA-2025:0299