{"id":"GHSA-pcx7-8hxg-j823","summary":"Duplicate Advisory: Keycloak proxy header handling Denial-of-Service (DoS) vulnerability","details":"## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-jgwc-jh89-rpgq. This link is maintained to preserve external references.\n\n## Original Description\nA vulnerability was found in the Keycloak Server. The Keycloak Server is vulnerable to a denial of service (DoS) attack due to improper handling of proxy headers. When Keycloak is configured to accept incoming proxy headers, it may accept non-IP values, such as obfuscated identifiers, without proper validation. This issue can lead to costly DNS resolution operations, which an attacker could exploit to tie up IO threads and potentially cause a denial of service.\nThe attacker must have access to send requests to a Keycloak instance that is configured to accept proxy headers, specifically when reverse proxies do not overwrite incoming headers, and Keycloak is configured to trust these headers.","modified":"2024-12-06T05:29:49.151870Z","published":"2024-11-25T09:30:59Z","withdrawn":"2024-11-25T19:35:56Z","database_specific":{"cwe_ids":["CWE-444"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-11-25T19:35:56Z","nvd_published_at":"2024-11-25T08:15:10Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-9666"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:10175"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:10176"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:10177"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:10178"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2024-9666"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2317440"}],"affected":[{"package":{"name":"org.keycloak:keycloak-quarkus-server","ecosystem":"Maven","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.0.9"}]}],"versions":["12.0.0","12.0.1","12.0.2","12.0.3","12.0.4","13.0.0","13.0.1","14.0.0","15.0.0","15.0.1","15.0.2","15.1.0","15.1.1","16.0.0","16.1.0","16.1.1","17.0.0","17.0.1","18.0.0","18.0.1","18.0.2","19.0.0","19.0.1","19.0.2","19.0.3","20.0.0","20.0.1","20.0.2","20.0.3","20.0.4","20.0.5","21.0.0","21.0.1","21.0.2","21.1.0","21.1.1","21.1.2","22.0.0","22.0.1","22.0.2","22.0.3","22.0.4","22.0.5","23.0.0","23.0.1","23.0.2","23.0.3","23.0.4","23.0.5","23.0.6","23.0.7","24.0.0","24.0.1","24.0.2","24.0.3","24.0.4","24.0.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-pcx7-8hxg-j823/GHSA-pcx7-8hxg-j823.json"}},{"package":{"name":"org.keycloak:keycloak-quarkus-server","ecosystem":"Maven","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"25.0.0"},{"fixed":"26.0.6"}]}],"versions":["25.0.0","25.0.1","25.0.2","25.0.3","25.0.4","25.0.5","25.0.6","26.0.0","26.0.1","26.0.2","26.0.4","26.0.5"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-pcx7-8hxg-j823/GHSA-pcx7-8hxg-j823.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}