{
  "id": "CVE-2021-42567",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-12-07T22:15:06.907",
  "lastModified": "2021-12-09T19:04:38.347",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints."
    },
    {
      "lang": "es",
      "value": "Apereo CAS versiones hasta 6.4.1, permite un ataque de tipo XSS por medio de peticiones POST enviadas a los endpoints de la API REST"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apereo:central_authentication_service:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.3.0",
              "versionEndExcluding": "6.3.7.1",
              "matchCriteriaId": "1E0AE631-B3F1-4F01-B70A-F1099DB4C976"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apereo:central_authentication_service:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.4.0",
              "versionEndExcluding": "6.4.2",
              "matchCriteriaId": "29A88276-77E2-4EF9-8823-42E02AF0E1E3"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://apereo.github.io/2021/10/18/restvuln/",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/apereo/cas/releases",
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ]
    }
  ]
}