fkie_cve-2021-41267
Vulnerability from fkie_nvd
Published
2021-11-24 19:15
Modified
2024-11-21 06:25
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| sensiolabs | symfony | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
"matchCriteriaId": "03A20B5C-F577-4E27-90BD-CB0689E7C602",
"versionEndExcluding": "5.3.12",
"versionStartIncluding": "5.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"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"
}
],
"id": "CVE-2021-41267",
"lastModified": "2024-11-21T06:25:55.573",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2021-11-24T19:15:07.737",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
},
{
"source": "security-advisories@github.com",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/pull/44243"
},
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
},
{
"source": "security-advisories@github.com",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/pull/44243"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-444"
}
],
"source": "security-advisories@github.com",
"type": "Primary"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.