GSD-2021-21673

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-21673
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-21673",
    "description": "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.",
    "id": "GSD-2021-21673"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21673"
      ],
      "details": "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.",
      "id": "GSD-2021-21673",
      "modified": "2023-12-13T01:23:10.540254Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "jenkinsci-cert@googlegroups.com",
        "ID": "CVE-2021-21673",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Jenkins CAS Plugin",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c=",
                          "version_name": "unspecified",
                          "version_value": "1.6.0"
                        }
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        "reference_data": [
          {
            "name": "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387",
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            "url": "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387"
          },
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            "refsource": "MISC",
            "url": "http://www.openwall.com/lists/oss-security/2021/06/30/1"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,1.6.0]",
          "affected_versions": "All versions up to 1.6.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-601",
            "CWE-937"
          ],
          "date": "2021-07-06",
          "description": "Jenkins CAS Plugin improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.",
          "fixed_versions": [
            "1.6.1"
          ],
          "identifier": "CVE-2021-21673",
          "identifiers": [
            "CVE-2021-21673"
          ],
          "not_impacted": "All versions after 1.6.0",
          "package_slug": "maven/org.jenkins-ci.plugins/cas-plugin",
          "pubdate": "2021-06-30",
          "solution": "Upgrade to version 1.6.1 or above.",
          "title": "URL Redirection to Untrusted Site (Open Redirect)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21673",
            "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387"
          ],
          "uuid": "d7c0343a-7a91-495a-b7a5-71da946219f8"
        }
      ]
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                "cpe_name": [],
                "versionEndIncluding": "1.6.0",
                "vulnerable": true
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          ]
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        "references": {
          "reference_data": [
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              "name": "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387",
              "refsource": "CONFIRM",
              "tags": [
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              ],
              "url": "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387"
            },
            {
              "name": "[oss-security] 20210630 Multiple vulnerabilities in Jenkins and Jenkins plugins",
              "refsource": "MLIST",
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              "url": "http://www.openwall.com/lists/oss-security/2021/06/30/1"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2023-10-25T18:16Z",
      "publishedDate": "2021-06-30T17:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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