{
  "id": "CVE-2021-31403",
  "sourceIdentifier": "security@vaadin.com",
  "published": "2021-04-23T16:15:08.600",
  "lastModified": "2021-04-30T19:00:07.060",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack"
    },
    {
      "lang": "es",
      "value": "La comparaci\u00f3n non-constant-time de tokens CSRF en el controlador de peticiones UIDL en com.vaadin:vaadin-server versiones 7.0.0 hasta 7.7.23 (Vaadin versiones 7.0.0 hasta 7.7.23) y versiones 8.0.0 hasta 8.12.2 (Vaadin versiones 8.0.0 hasta 8.12.2), permite al atacante adivinar un token de seguridad por medio de un ataque de sincronizaci\u00f3n"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.5,
          "baseSeverity": "LOW"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 1.4
      },
      {
        "source": "security@vaadin.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 2.5
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "accessVector": "LOCAL",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 1.9
        },
        "baseSeverity": "LOW",
        "exploitabilityScore": 3.4,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ]
    },
    {
      "source": "security@vaadin.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "7.0.0",
              "versionEndExcluding": "7.7.24",
              "matchCriteriaId": "7C38D198-2ABE-4074-A889-282E7938E76D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "8.0.0",
              "versionEndExcluding": "8.12.3",
              "matchCriteriaId": "EC04E83C-6C04-4BAD-AF0F-4B91F067B65C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/vaadin/framework/pull/12188",
      "source": "security@vaadin.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/vaadin/framework/pull/12190",
      "source": "security@vaadin.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://vaadin.com/security/cve-2021-31403",
      "source": "security@vaadin.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}