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Vulnerability · Published Jan 14, 2025 · Assigned by redhat

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

Medium 6.5

In plain English

A medium-severity security flaw in keycloak. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.9%top 38.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.keycloak:keycloak-quarkus-server26.0.8GHSA-w3g8-r9gw-qrh8

Affected products (as reported)

VendorProductVersions
keycloak 0 – before 26.0.8
Red Hat Red Hat build of Keycloak 26.0 see references
Red Hat Red Hat build of Keycloak 26.0 see references
Red Hat Red Hat build of Keycloak 26.0 see references
Red Hat RHBK 26.0.8 see references
Red Hat Red Hat Build of Keycloak see references
Red Hat Red Hat JBoss Enterprise Application Platform 8 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references

Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References