Vulnerability-Lookup

FKIE_CVE-2021-42336

Vulnerability from fkie_nvd - Published: 2021-10-15 12:15 - Updated: 2026-06-17 04:09

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

The learning history page of the Easytest is vulnerable by permission bypass. After obtaining a user’s permission, remote attackers can access other users’ and administrator’s account information except password by crafting URL parameters.

References

	URL	Tags
	twcert@cert.org.tw	https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html	Third Party Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html	Third Party Advisory

Impacted products

	Vendor	Product	Version
	huaju	easytest_online_learning_test_platform	1705

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Easytest",
          "vendor": "Huachu Digital Technology Co.,Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "1705"
            }
          ]
        }
      ],
      "source": "twcert@cert.org.tw"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:huaju:easytest_online_learning_test_platform:1705:*:*:*:*:*:*:*",
              "matchCriteriaId": "63605331-63BE-4B6B-9E62-43179A48FAAB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The learning history page of the Easytest is vulnerable by permission bypass. After obtaining a user\u2019s permission, remote attackers can access other users\u2019 and administrator\u2019s account information except password by crafting URL parameters."
    },
    {
      "lang": "es",
      "value": "La p\u00e1gina del historial de aprendizaje de Easytest es vulnerable por una omisi\u00f3n de permisos. Despu\u00e9s de obtener permisos de usuario, unos atacantes remotos pueden acceder a la informaci\u00f3n de la cuenta de otros usuarios y del administrador, excepto la contrase\u00f1a, al dise\u00f1ar par\u00e1metros de la URL"
    }
  ],
  "id": "CVE-2021-42336",
  "lastModified": "2026-06-17T04:09:40.137",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "twcert@cert.org.tw",
        "type": "Secondary"
      }
    ]
  },
  "published": "2021-10-15T12:15:08.010",
  "references": [
    {
      "source": "twcert@cert.org.tw",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html"
    }
  ],
  "sourceIdentifier": "twcert@cert.org.tw",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ],
      "source": "twcert@cert.org.tw",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-42336 (GCVE-0-2021-42336)

Vulnerability from cvelistv5 – Published: 2021-10-15 12:10 – Updated: 2024-09-16 16:33

Title

Huachu Digital Technology Co.,Ltd. Easytest - Improper Authorization

Summary

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-285 - Improper Authorization

Assigner

twcert mitre root

References

1 reference

URL	Tags
https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Huachu Digital Technology Co.,Ltd.	Easytest	Affected: 1705

Date Public

2021-10-15 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:30:38.261Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Easytest",
          "vendor": "Huachu Digital Technology Co.,Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "1705"
            }
          ]
        }
      ],
      "datePublic": "2021-10-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The learning history page of the Easytest is vulnerable by permission bypass. After obtaining a user\u2019s permission, remote attackers can access other users\u2019 and administrator\u2019s account information except password by crafting URL parameters."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285 Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-15T12:10:40.000Z",
        "orgId": "cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e",
        "shortName": "twcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update Easytest to version 2100"
        }
      ],
      "source": {
        "advisory": "TVN-202110008",
        "discovery": "EXTERNAL"
      },
      "title": "Huachu Digital Technology Co.,Ltd. Easytest - Improper Authorization",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "AKA": "TWCERT/CC",
          "ASSIGNER": "cve@cert.org.tw",
          "DATE_PUBLIC": "2021-10-15T11:57:00.000Z",
          "ID": "CVE-2021-42336",
          "STATE": "PUBLIC",
          "TITLE": "Huachu Digital Technology Co.,Ltd. Easytest - Improper Authorization"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Easytest",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "=",
                            "version_value": "1705"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Huachu Digital Technology Co.,Ltd."
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The learning history page of the Easytest is vulnerable by permission bypass. After obtaining a user\u2019s permission, remote attackers can access other users\u2019 and administrator\u2019s account information except password by crafting URL parameters."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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-132-5205-1de5a-1.html",
              "refsource": "MISC",
              "url": "https://www.twcert.org.tw/tw/cp-132-5205-1de5a-1.html"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Update Easytest to version 2100"
          }
        ],
        "source": {
          "advisory": "TVN-202110008",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e",
    "assignerShortName": "twcert",
    "cveId": "CVE-2021-42336",
    "datePublished": "2021-10-15T12:10:40.380Z",
    "dateReserved": "2021-10-12T00:00:00.000Z",
    "dateUpdated": "2024-09-16T16:33:19.781Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.