gsd-2021-41267
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-41267


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-41267",
    "description": "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.",
    "id": "GSD-2021-41267"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-41267"
      ],
      "details": "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.",
      "id": "GSD-2021-41267",
      "modified": "2023-12-13T01:23:27.107483Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "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"
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            }
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            "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)"
              }
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          }
        ]
      },
      "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",
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          "affected_range": "\u003e=5.2.0,\u003c5.3.12",
          "affected_versions": "All versions starting from 5.2.0 before 5.3.12",
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          "date": "2021-11-30",
          "description": "`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, 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. have a patch to ensure that the `X-Forwarded-Prefix` header is not forwarded to subrequests when it is not trusted.",
          "fixed_versions": [
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          "not_impacted": "All versions before 5.2.0, all versions starting from 5.3.12",
          "package_slug": "packagist/symfony/http-kernel",
          "pubdate": "2021-11-24",
          "solution": "Upgrade to version 5.3.12 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-41267",
            "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
            "https://github.com/symfony/symfony/releases/tag/v5.3.12",
            "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
            "https://github.com/symfony/symfony/pull/44243"
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          "uuid": "b3004c66-43b4-431e-892c-8d13e7d68038"
        },
        {
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          "date": "2021-11-30",
          "description": "`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, 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.",
          "fixed_versions": [
            "5.4.0"
          ],
          "identifier": "CVE-2021-41267",
          "identifiers": [
            "CVE-2021-41267",
            "GHSA-q3j3-w37x-hq2q"
          ],
          "not_impacted": "All versions before 5.2.0, all versions starting from 5.3.12",
          "package_slug": "packagist/symfony/security-http",
          "pubdate": "2021-11-24",
          "solution": "Upgrade to version 5.4.0 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
          "urls": [
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            "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
            "https://github.com/symfony/symfony/releases/tag/v5.3.12",
            "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
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          ],
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          "description": "`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, 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.",
          "fixed_versions": [
            "5.3.12"
          ],
          "identifier": "CVE-2021-41267",
          "identifiers": [
            "CVE-2021-41267",
            "GHSA-q3j3-w37x-hq2q"
          ],
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          "package_slug": "packagist/symfony/symfony",
          "pubdate": "2021-11-24",
          "solution": "Upgrade to version 5.3.12 or above.",
          "title": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request Smuggling\u0027)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-41267",
            "https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q",
            "https://github.com/symfony/symfony/releases/tag/v5.3.12",
            "https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487",
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                "vulnerable": true
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2021-11-30T18:52Z",
      "publishedDate": "2021-11-24T19:15Z"
    }
  }
}


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