FKIE_CVE-2018-7340

Vulnerability from fkie_nvd - Published: 2019-04-17 15:29 - Updated: 2026-06-17 02:03
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.
References
security@duo.comhttps://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsExploit, Vendor Advisory
security@duo.comhttps://www.kb.cert.org/vuls/id/475445Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementationsExploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/475445Third Party Advisory, US Government Resource
Impacted products
Vendor Product Version
cisco duo_network_gateway *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Duo Network Gateway",
          "vendor": "Duo Security",
          "versions": [
            {
              "lessThan": "1.2.9",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@duo.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:duo_network_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0587F16-266D-4651-81CE-587705A53C3A",
              "versionEndIncluding": "1.2.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Duo Network Gateway 1.2.9 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers."
    },
    {
      "lang": "es",
      "value": "Duo Network Gateway versi\u00f3n 1.2.9 y anteriores pueden utilizar incorrectamente los resultados de las API de transversalidad y canonicalizaci\u00f3n de DOM de XML de tal manera que un atacante pueda manipular los datos SAML sin invalidar la firma criptogr\u00e1fica, lo que permite que el ataque omita la identificaci\u00f3n a los proveedores de servicio de SAML."
    }
  ],
  "id": "CVE-2018-7340",
  "lastModified": "2026-06-17T02:03:03.433",
  "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
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0,
        "source": "security@duo.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-04-17T15:29:00.640",
  "references": [
    {
      "source": "security@duo.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"
    },
    {
      "source": "security@duo.com",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.kb.cert.org/vuls/id/475445"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://www.kb.cert.org/vuls/id/475445"
    }
  ],
  "sourceIdentifier": "security@duo.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "security@duo.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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