GSD-2021-42331

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
The “Study Edit” function of ShinHer StudyOnline System does not perform permission control. After logging in with user’s privilege, remote attackers can access and edit other users’ tutorial schedule by crafting URL parameters.
Aliases
Aliases
CVE-2021-42331
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-42331",
    "description": "The \u201cStudy Edit\u201d function of ShinHer StudyOnline System does not perform permission control. After logging in with user\u2019s privilege, remote attackers can access and edit other users\u2019 tutorial schedule by crafting URL parameters.",
    "id": "GSD-2021-42331"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-42331"
      ],
      "details": "The \u201cStudy Edit\u201d function of ShinHer StudyOnline System does not perform permission control. After logging in with user\u2019s privilege, remote attackers can access and edit other users\u2019 tutorial schedule by crafting URL parameters.",
      "id": "GSD-2021-42331",
      "modified": "2023-12-13T01:23:06.624412Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "AKA": "TWCERT/CC",
        "ASSIGNER": "cve@cert.org.tw",
        "DATE_PUBLIC": "2021-10-15T11:38:00.000Z",
        "ID": "CVE-2021-42331",
        "STATE": "PUBLIC",
        "TITLE": "ShinHer Information Co., LTD. ShinHer StudyOnline System - Improper Authorization-2"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "ShinHer StudyOnline System",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c=",
                          "version_value": "2021"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "ShinHer Information Co., LTD."
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "The \u201cStudy Edit\u201d function of ShinHer StudyOnline System does not perform permission control. After logging in with user\u2019s privilege, remote attackers can access and edit other users\u2019 tutorial schedule by crafting URL parameters."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-285 Improper Authorization"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.twcert.org.tw/tw/cp-132-5201-dc534-1.html",
            "refsource": "MISC",
            "url": "https://www.twcert.org.tw/tw/cp-132-5201-dc534-1.html"
          }
        ]
      },
      "solution": [
        {
          "lang": "eng",
          "value": "Update ShinHer StudyOnline System to version v2021.08.20.01"
        }
      ],
      "source": {
        "advisory": "TVN-202110003",
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:xinheinformation:xinhe_teaching_platform_system:v2021:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@cert.org.tw",
          "ID": "CVE-2021-42331"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "The \u201cStudy Edit\u201d function of ShinHer StudyOnline System does not perform permission control. After logging in with user\u2019s privilege, remote attackers can access and edit other users\u2019 tutorial schedule by crafting URL parameters."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-862"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.twcert.org.tw/tw/cp-132-5201-dc534-1.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2022-08-12T16:29Z",
      "publishedDate": "2021-10-15T12:15Z"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.