{"id":"CVE-2021-22696","details":"CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a \"request\" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the \"request_uri\" parameter. CXF was not validating the \"request_uri\" parameter (apart from ensuring it uses \"https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.","aliases":["GHSA-7q4h-pj78-j7vg"],"modified":"2026-07-08T05:59:35.464464987Z","published":"2021-04-02T10:15:12.200Z","database_specific":{"unresolved_ranges":[{"vendor_product":"oracle:communications_diameter_intelligence_hub","cpes":["cpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.1.0"},{"introduced":"8.2.0"},{"last_affected":"8.2.3"}],"source":"CPE_RANGE"},{"vendor_product":"oracle:communications_session_report_manager","cpes":["cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.2.4.0"}],"source":"CPE_RANGE"},{"source":"CPE_RANGE","vendor_product":"oracle:communications_session_route_manager","cpes":["cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.2.4"}]},{"extracted_events":[{"introduced":"5.5.0.0.0"},{"last_affected":"5.5.0.0.0"},{"introduced":"5.9.0.0.0"},{"last_affected":"5.9.0.0.0"},{"introduced":"12.2.1.3.0"},{"last_affected":"12.2.1.3.0"},{"introduced":"12.2.1.4.0"},{"last_affected":"12.2.1.4.0"}],"source":"CPE_STRING","vendor_product":"oracle:business_intelligence","cpes":["cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:*","cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:*","cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:*","cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:*"]},{"source":"CPE_STRING","vendor_product":"oracle:communications_element_manager","cpes":["cpe:2.3:a:oracle:communications_element_manager:8.2.2:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.2.2"},{"last_affected":"8.2.2"}]}]},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045%40%3Cannounce.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cdev.cxf.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cusers.cxf.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/02/2"},{"type":"ADVISORY","url":"https://cxf.apache.org/security-advisories.data/CVE-2021-22696.txt.asc"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/cxf","events":[{"introduced":"0"},{"fixed":"2626b3ca26822763d334cf96b78b206a781bcc2e"},{"introduced":"dd0feaaeee9a9a8e7ffb060f0cf46ef06b6b3d44"},{"fixed":"1a3950c164cabef352bc51c61f30612f05bc38f2"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.3.10"},{"introduced":"3.4.0"},{"fixed":"3.4.3"}]}}],"versions":["cxf-3.4.2","cxf-3.3.9","cxf-3.4.1","cxf-3.3.8","cxf-3.4.0","cxf-3.3.7","cxf-3.3.6","cxf-3.3.5","cxf-3.3.4","cxf-3.3.3","cxf-3.3.2","cxf-3.3.1","cxf-3.3.0","cxf-3.2.5","cxf-3.2.4","cxf-3.2.3","cxf-3.2.2","cxf-3.2.1","cxf-3.2.0","cxf-3.1.4","cxf-3.1.3","cxf-3.1.2","cxf-3.1.1","cxf-3.1.0","cxf-3.0.0","cxf-3.0.0-milestone2","cxf-2.7.2","cxf-2.7.1","cxf-2.7.0","cxf-2.6.1","cxf-2.6.0","cxf-2.5.1","cxf-2.5.0","cxf-2.4.0","cxf-2.3.0","cxf-2.2.2","cxf-2.2.1","cxf-2.2","cxf-2.1.2","cxf-2.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-22696.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}