Allocation of Resources Without Limits or Throttling Affecting org.keycloak:keycloak-quarkus-dist package, versions [0,]
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- published10 Oct 2025
- disclosed7 Oct 2025
- creditErasure5959
Introduced: 7 Oct 2025
NewCVE-2025-11419 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via repeated client-initiated TLS renegotiation requests. An attacker can exhaust server CPU resources by sending multiple renegotiation requests over unauthenticated connections.
Note:
This issue affects only TLS 1.2 users, TLS 1.3 completely removes support for renegotiation, effectively closing this potential attack vector.
Workaround
This vulnerability can be mitigated by configuring the system to reject client-initiated TLS renegotiation using the Java system property -Djdk.tls.rejectClientInitiatedRenegotiation=true. Additionally, deploying the system behind proper network access controls and rate-limiting mechanisms can further reduce exposure.