{
  "id": "CVE-2021-21673",
  "sourceIdentifier": "jenkinsci-cert@googlegroups.com",
  "published": "2021-06-30T17:15:09.160",
  "lastModified": "2021-07-06T17:07:47.470",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks."
    },
    {
      "lang": "es",
      "value": "Jenkins CAS Plugin versiones 1.6.0 y anteriores determina inapropiadamente que una URL de redireccionamiento despu\u00e9s del inicio de sesi\u00f3n est\u00e1 apuntando leg\u00edtimamente a Jenkins, permitiendo a atacantes llevar a cabo ataques de phishing"
    }
  ],
  "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:P/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.8
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 4.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "jenkinsci-cert@googlegroups.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:jenkins:cas:*:*:*:*:*:jenkins:*:*",
              "versionEndIncluding": "1.6.0",
              "matchCriteriaId": "9F3E362D-3518-4D3B-9815-A2AAF7899231"
            }
          ]
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      ]
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  ],
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2021/06/30/1",
      "source": "jenkinsci-cert@googlegroups.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387",
      "source": "jenkinsci-cert@googlegroups.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}