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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "E93E9C64-FAEC-494D-82CA-2AD4381EFE52", "versionEndExcluding": "1.20.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a \"type confusion\" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted."}, {"lang": "es", "value": "Envoy es un proxy de borde y servicio de c\u00f3digo abierto, dise\u00f1ado para aplicaciones nativas de la nube. La implementaci\u00f3n default_validator.cc usada para implementar las rutinas de comprobaci\u00f3n de certificados por defecto presenta un error de \"confusi\u00f3n de tipo\" cuando procesa subjectAltNames. Este procesamiento permite, por ejemplo, que un rfc822Name o uniformResourceIndicator sea autenticado como un nombre de dominio. Esta confusi\u00f3n permite omitir nameConstraints, tal y como lo procesa la implementaci\u00f3n subyacente de OpenSSL/BoringSSL, exponiendo la posibilidad de suplantaci\u00f3n de servidores arbitrarios. Como resultado, Envoy confiar\u00e1 en certificados de origen que no deber\u00edan ser confiables"}], "id": "CVE-2022-21656", "lastModified": "2023-07-24T13:50:04.853", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2022-02-22T23:15:11.223", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/commit/bb95af848c939cfe5b5ee33c5b1770558077e64e"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-c9g7-xwcv-pjx2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-843"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "envoy: X.509 subjectAltName matching (and nameConstraints) bypass", "id": "2057271", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2057271"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-295", "details": ["Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a \"type confusion\" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted.", "A flaw was found in envoy. The default_validator.cc implementation used to implement the default certificate validation routines has a \"type confusion\" bug when processing subjectAltNames."], "name": "CVE-2022-21656", "package_state": [{"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/proxyv2-rhel8", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:2.0", "fix_state": "Will not fix", "package_name": "servicemesh-proxy", "product_name": "OpenShift Service Mesh 2.0"}, {"cpe": "cpe:/a:redhat:service_mesh:2.1", "fix_state": "Will not fix", "package_name": "servicemesh-proxy", "product_name": "OpenShift Service Mesh 2.1"}], "public_date": "2022-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-21656\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-21656\nhttps://github.com/envoyproxy/envoy/commit/bb95af848c939cfe5b5ee33c5b1770558077e64e\nhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-c9g7-xwcv-pjx2"], "threat_severity": "Moderate", "upstream_fix": "envoy 1.20.2"}