cve-2021-41267
Vulnerability from cvelistv5
Published
2021-11-24 18:55
Modified
2024-08-04 03:08
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
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
security-advisories@github.comhttps://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/symfony/symfony/pull/44243Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/symfony/symfony/releases/tag/v5.3.12Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2qPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/symfony/symfony/pull/44243Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/symfony/symfony/releases/tag/v5.3.12Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2qPatch, Third Party Advisory
Impacted products
Vendor Product Version
symfony symfony Version: >= 5.2.0, < 5.3.12
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:08:31.656Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/symfony/symfony/pull/44243"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "symfony",
          "vendor": "symfony",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.2.0, \u003c 5.3.12"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-444",
              "description": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-11-24T18:55:17",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/pull/44243"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
        }
      ],
      "source": {
        "advisory": "GHSA-q3j3-w37x-hq2q",
        "discovery": "UNKNOWN"
      },
      "title": "Webcache Poisoning in Symfony",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-41267",
          "STATE": "PUBLIC",
          "TITLE": "Webcache Poisoning in Symfony"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "symfony",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 5.2.0, \u003c 5.3.12"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "symfony"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "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."
            }
          ]
        },
        "impact": {
          "cvss": {
            "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"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/symfony/symfony/pull/44243",
              "refsource": "MISC",
              "url": "https://github.com/symfony/symfony/pull/44243"
            },
            {
              "name": "https://github.com/symfony/symfony/releases/tag/v5.3.12",
              "refsource": "MISC",
              "url": "https://github.com/symfony/symfony/releases/tag/v5.3.12"
            },
            {
              "name": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
              "refsource": "CONFIRM",
              "url": "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q"
            },
            {
              "name": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
              "refsource": "MISC",
              "url": "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-q3j3-w37x-hq2q",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-41267",
    "datePublished": "2021-11-24T18:55:17",
    "dateReserved": "2021-09-15T00:00:00",
    "dateUpdated": "2024-08-04T03:08:31.656Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-41267\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2021-11-24T19:15:07.737\",\"lastModified\":\"2024-11-21T06:25:55.573\",\"vulnStatus\":\"Modified\",\"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\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-444\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.2.0\",\"versionEndExcluding\":\"5.3.12\",\"matchCriteriaId\":\"03A20B5C-F577-4E27-90BD-CB0689E7C602\"}]}]}],\"references\":[{\"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\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/symfony/symfony/releases/tag/v5.3.12\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Release Notes\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q\",\"source\":\"security-advisories@github.com\",\"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\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/symfony/symfony/releases/tag/v5.3.12\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"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\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.