FKIE_CVE-2020-5217

Vulnerability from fkie_nvd - Published: 2020-01-23 03:15 - Updated: 2024-11-21 05:33
Severity ?
4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Summary
In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secure_headers are sorted alphabetically so they pretty much all come before script-src. A previously undefined directive would receive a value even if SecureHeaders::OPT_OUT was supplied. The fixed versions will silently convert the semicolons to spaces and emit a deprecation warning when this happens. This will result in innocuous browser console messages if being exploited/accidentally used. In future releases, we will raise application errors resulting in 500s. Depending on what major version you are using, the fixed versions are 6.2.0, 5.1.0, 3.8.0.
References
security-advisories@github.comhttps://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3Patch
security-advisories@github.comhttps://github.com/twitter/secure_headers/issues/418Exploit, Third Party Advisory
security-advisories@github.comhttps://github.com/twitter/secure_headers/pull/421Third Party Advisory
security-advisories@github.comhttps://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397cMitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/twitter/secure_headers/issues/418Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twitter/secure_headers/pull/421Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397cMitigation, Third Party Advisory
Impacted products
Vendor Product Version
twitter secure_headers *
twitter secure_headers *
twitter secure_headers *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*",
              "matchCriteriaId": "F0F5AB6F-E584-4640-A497-3BC81A4171C8",
              "versionEndExcluding": "3.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*",
              "matchCriteriaId": "B8A7D02A-9E27-4388-A128-14BFCCA049CA",
              "versionEndExcluding": "5.1.0",
              "versionStartIncluding": "5.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*",
              "matchCriteriaId": "D8B75B75-5C9C-4C8D-ACD6-214D042546E7",
              "versionEndExcluding": "6.2.0",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secure_headers are sorted alphabetically so they pretty much all come before script-src. A previously undefined directive would receive a value even if SecureHeaders::OPT_OUT was supplied. The fixed versions will silently convert the semicolons to spaces and emit a deprecation warning when this happens. This will result in innocuous browser console messages if being exploited/accidentally used. In future releases, we will raise application errors resulting in 500s. Depending on what major version you are using, the fixed versions are 6.2.0, 5.1.0, 3.8.0."
    },
    {
      "lang": "es",
      "value": "En Secure Headers (secure_headers de RubyGem), una vulnerabilidad de inyecci\u00f3n de directiva est\u00e1 presente en las versiones anteriores a 3.8.0, 5.1.0 y 6.2.0. Si una entrada suministrada por el usuario fue pasada a append/override_content_security_policy_directives, se podr\u00eda inyectar un punto y coma conllevando a una inyecci\u00f3n de directiva. Esto podr\u00eda ser usado para, por ejemplo anular una directiva script-src. Las directivas duplicadas son ignoradas y la primera gana. Las directivas en secure_headers est\u00e1n ordenadas alfab\u00e9ticamente, por lo que casi todas van antes de script-src. Una directiva previamente indefinida recibir\u00eda un valor inclusive si la funci\u00f3n SecureHeaders::OPT_OUT fue suministrada. Las versiones corregidas convertir\u00e1n silenciosamente los puntos y comas en espacios y emitir\u00e1n una advertencia de desaprobaci\u00f3n cuando esto suceda. Esto resultar\u00e1 en mensajes inocuos de la consola del navegador si est\u00e1 siendo explotada o usada accidentalmente. En futuras versiones, generaremos errores de aplicaci\u00f3n resultando en 500. Seg\u00fan la versi\u00f3n principal que est\u00e9 usando, las versiones corregidas son 6.2.0, 5.1.0, 3.8.0."
    }
  ],
  "id": "CVE-2020-5217",
  "lastModified": "2024-11-21T05:33:41.997",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/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": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-01-23T03:15:10.793",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/twitter/secure_headers/issues/418"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/twitter/secure_headers/pull/421"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://github.com/twitter/secure_headers/pull/421"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397c"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-95"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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