CVE-2021-41267

{"id": "CVE-2021-41267", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-11-24T19:15:07.737", "references": [{"url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/symfony/symfony/pull/44243", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/symfony/symfony/releases/tag/v5.3.12", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-444"}]}], "descriptions": [{"lang": "en", "value": "Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the \"trusted_headers\" allowed list are ignored and protect users from \"Cache poisoning\" attacks. In Symfony 5.2, maintainers added support for the `X-Forwarded-Prefix` headers, but this header was accessible in SubRequest, even if it was not part of the \"trusted_headers\" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted."}, {"lang": "es", "value": "Symfony/Http-Kernel es el componente del n\u00facleo HTTP de Symfony, un framework PHP para aplicaciones web y de consola y un conjunto de componentes PHP reusables. Los encabezados que no forman parte de la lista permitida \"trusted_headers\" son ignoradas y protegen a los usuarios de ataques de \"Cache poisoning\". En Symfony versi\u00f3n 5.2, los mantenedores a\u00f1adieron soporte para los encabezados \"X-Forwarded-Prefix\", pero este encabezado era accesible en SubRequest, incluso si no era parte de la lista permitida \"trusted_headers\". Un atacante podr\u00eda aprovechar esta oportunidad para falsificar peticiones que contengan un encabezado \"X-Forwarded-Prefix\", conllevando aun problema de envenenamiento de la cach\u00e9 web. Las versiones 5.3.12 y posteriores presentan un parche para asegurar que el encabezado \"X-Forwarded-Prefix\" no es reenviado a las subpeticiones cuando no es confiable"}], "lastModified": "2021-11-30T18:52:27.077", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "03A20B5C-F577-4E27-90BD-CB0689E7C602", "versionEndExcluding": "5.3.12", "versionStartIncluding": "5.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}