gsd-2021-20186
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.
Aliases
Aliases
CVE-2021-20186


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-20186",
    "description": "It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.",
    "id": "GSD-2021-20186"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20186"
      ],
      "details": "It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.",
      "id": "GSD-2021-20186",
      "modified": "2023-12-13T01:23:11.978594Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2021-20186",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "moodle",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "moodle 3.10.1, moodle 3.9.4, moodle 3.8.7, moodle 3.5.16"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-79"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://moodle.org/mod/forum/discuss.php?d=417170",
            "refsource": "MISC",
            "url": "https://moodle.org/mod/forum/discuss.php?d=417170"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c3.5.16||\u003e=3.8.0,\u003c3.8.7||\u003e=3.9.0,\u003c3.9.4||\u003e=3.10.0,\u003c3.10.1",
          "affected_versions": "All versions before 3.5.16, all versions starting from 3.8.0 before 3.8.7, all versions starting from 3.9.0 before 3.9.4, all versions starting from 3.10.0 before 3.10.1",
          "cvss_v2": "AV:N/AC:H/Au:S/C:P/I:N/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": "2021-02-01",
          "description": "It was found in Moodle that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.",
          "fixed_versions": [
            "3.5.16",
            "3.8.7",
            "3.9.4",
            "3.10.1"
          ],
          "identifier": "CVE-2021-20186",
          "identifiers": [
            "CVE-2021-20186"
          ],
          "not_impacted": "All versions starting from 3.5.16 before 3.8.0, all versions starting from 3.8.7 before 3.9.0, all versions starting from 3.9.4 before 3.10.0, all versions starting from 3.10.1",
          "package_slug": "packagist/moodle/moodle",
          "pubdate": "2021-01-28",
          "solution": "Upgrade to versions 3.5.16, 3.8.7, 3.9.4, 3.10.1 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-20186",
            "https://moodle.org/mod/forum/discuss.php?d=417170"
          ],
          "uuid": "69a6ca84-5ad0-4448-b6b5-53d32caa481b"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.5.16",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.8.7",
                "versionStartIncluding": "3.8.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.9.4",
                "versionStartIncluding": "3.9.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.10.1",
                "versionStartIncluding": "3.10.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2021-20186"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-79"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://moodle.org/mod/forum/discuss.php?d=417170",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://moodle.org/mod/forum/discuss.php?d=417170"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "HIGH",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 2.1,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:H/Au:S/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "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": "2021-02-01T14:55Z",
      "publishedDate": "2021-01-28T19:15Z"
    }
  }
}


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