GSD-2019-18210

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Persistent XSS in /course/modedit.php of Moodle through 3.7.2 allows authenticated users (Teacher and above) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the introeditor[text] parameter. NOTE: the discoverer and vendor disagree on whether Moodle customers have a reasonable expectation that anyone authenticated as a Teacher can be trusted with the ability to add arbitrary JavaScript (this ability is not documented on Moodle's Teacher_role page). Because the vendor has this expectation, they have stated "this report has been closed as a false positive, and not a bug."
Aliases
Aliases
CVE-2019-18210
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{
  "GSD": {
    "alias": "CVE-2019-18210",
    "description": "Persistent XSS in /course/modedit.php of Moodle through 3.7.2 allows authenticated users (Teacher and above) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the introeditor[text] parameter. NOTE: the discoverer and vendor disagree on whether Moodle customers have a reasonable expectation that anyone authenticated as a Teacher can be trusted with the ability to add arbitrary JavaScript (this ability is not documented on Moodle\u0027s Teacher_role page). Because the vendor has this expectation, they have stated \"this report has been closed as a false positive, and not a bug.\"",
    "id": "GSD-2019-18210"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-18210"
      ],
      "details": "Persistent XSS in /course/modedit.php of Moodle through 3.7.2 allows authenticated users (Teacher and above) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the introeditor[text] parameter. NOTE: the discoverer and vendor disagree on whether Moodle customers have a reasonable expectation that anyone authenticated as a Teacher can be trusted with the ability to add arbitrary JavaScript (this ability is not documented on Moodle\u0027s Teacher_role page). Because the vendor has this expectation, they have stated \"this report has been closed as a false positive, and not a bug.\"",
      "id": "GSD-2019-18210",
      "modified": "2023-12-13T01:23:50.396732Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-18210",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
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      "description": {
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          }
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          {
            "name": "https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a",
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            "url": "https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a"
          },
          {
            "name": "https://docs.moodle.org/38/en/Teacher_role",
            "refsource": "MISC",
            "url": "https://docs.moodle.org/38/en/Teacher_role"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c=3.7.2",
          "affected_versions": "All versions up to 3.7.2",
          "cvss_v2": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2020-02-13",
          "description": "Persistent XSS in `/course/modedit.php` of Moodle allows authenticated users (Teacher) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the `introeditor[text]` parameter.",
          "fixed_versions": [
            "3.7.3"
          ],
          "identifier": "CVE-2019-18210",
          "identifiers": [
            "CVE-2019-18210"
          ],
          "not_impacted": "All versions after 3.7.2",
          "package_slug": "packagist/moodle/moodle",
          "pubdate": "2020-02-11",
          "solution": "Upgrade to version 3.7.3 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2019-18210",
            "https://docs.moodle.org/38/en/Teacher_role"
          ],
          "uuid": "30df8cef-b81e-40fa-a1a3-ae95ab5857cc"
        }
      ]
    },
    "nvd.nist.gov": {
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                "cpe23Uri": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.7.2",
                "vulnerable": true
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        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Persistent XSS in /course/modedit.php of Moodle through 3.7.2 allows authenticated users (Teacher and above) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the introeditor[text] parameter. NOTE: the discoverer and vendor disagree on whether Moodle customers have a reasonable expectation that anyone authenticated as a Teacher can be trusted with the ability to add arbitrary JavaScript (this ability is not documented on Moodle\u0027s Teacher_role page). Because the vendor has this expectation, they have stated \"this report has been closed as a false positive, and not a bug.\""
            }
          ]
        },
        "problemtype": {
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            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-79"
                }
              ]
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://docs.moodle.org/38/en/Teacher_role",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
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            },
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            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2021-12-21T12:54Z",
      "publishedDate": "2020-02-11T14:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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