CVE-2020-8664

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "F28F473E-9FE6-4F05-8C49-9E2997CC8AE6", "versionEndIncluding": "1.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CNCF Envoy through 1.13.0 has incorrect Access Control when using SDS with Combined Validation Context. Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the \u201cstatic\u201d part of the validation context to be not applied, even though it was visible in the active config dump."}, {"lang": "es", "value": "CNCF Envoy versiones hasta 1.13.0, presenta un Control de Acceso incorrecto cuando se usa SDS con Contexto de Comprobaci\u00f3n Combinada. Al utilizar el mismo secreto (por ejemplo, CA de confianza) a trav\u00e9s de muchos recursos junto con el contexto de comprobaci\u00f3n combinado podr\u00eda conllevar a que la parte \u201cstatic\u201d del contexto de comprobaci\u00f3n no sea aplicada, a\u00fan y cuando fuera visible en el volcado de la configuraci\u00f3n activa."}], "id": "CVE-2020-8664", "lastModified": "2026-10-02T21:00:25.163", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-03-04T21:15:11.497", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2020:0734"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2020:0734"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank The Envoy Security Team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:0734", "cpe": "cpe:/a:redhat:service_mesh:1.0::el8", "package": "servicemesh-proxy-0:1.0.9-2.el8", "product_name": "OpenShift Service Mesh 1.0", "release_date": "2020-03-05T00:00:00Z"}], "bugzilla": {"description": "envoy: Incorrect Access Control when using SDS with Combined Validation Context", "id": "1802542", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1802542"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "verified"}, "cwe": "CWE-284", "details": ["CNCF Envoy through 1.13.0 has incorrect Access Control when using SDS with Combined Validation Context. Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the \u201cstatic\u201d part of the validation context to be not applied, even though it was visible in the active config dump.", "An access control bypass vulnerability was found in envoy. When the same TLS secret is used across multiple resources, the client's data, such as the subject alternative name or hash, is not validated. This flaw could lead to a possible bypass of security restrictions."], "name": "CVE-2020-8664", "public_date": "2020-03-03T18:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-8664\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8664\nhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8"], "threat_severity": "Moderate"}

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