OAuth 2 authorization service vulnerable to DDos attacks (Apache Software Foundation Apache CXF)

CVE-2021-22696

HIGH 7.5

En bref

Source: NVD
EPSS: EPSS 6.59 % · centile 94 (2026-10-29)
État: PUBLISHED
Publiée: 2021-04-02 10:05 UTC
Mise à jour: 2025-02-13 16:27 UTC
Attribuée par: apache
Statut NVD: Modified

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Description

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.

Faiblesses (CWE)

CWE-918 — Falsification de requête côté serveur (SSRF)
CWE-400 — Consommation de ressources non maîtrisée (déni de service)

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Avis

GHSA-7q4h-pj78-j7vg — Authorization service vulnerable to DDos attacks in Apache CFX

Références européennes

ENISA EUVD · EUVD-2021-1003
GCVE · GCVE-0-2021-22696

Avis du CERT-FR

CERTFR-2024-AVI-0305 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2021-AVI-951 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
CERTFR-2021-AVI-912 — Multiples vulnérabilités dans IBM Qradar · cert.ssi.gouv.fr
CERTFR-2021-AVI-417 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* < 3.3.10
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* ≥ 3.4.0 < 3.4.3
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:*:*:*
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:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:* ≥ 8.0.0 ≤ 8.1.0
cpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:* ≥ 8.2.0 ≤ 8.2.3
cpe:2.3:a:oracle:communications_element_manager:8.2.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* ≥ 8.0.0 ≤ 8.2.4.0
cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* ≥ 8.0.0 ≤ 8.2.4

Produits affectés

Produit	Versions
Apache Software Foundation · Apache CXF	affected unspecified < 3.4.3 ; affected unspecified < 3.3.10

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

⚠️ OAuth 2 authorization service vulnerable to DDos attacks (Apache Software Foundation Apache CXF)