Vulnerability-Lookup

GHSA-QQJ9-5RM5-5HHR

Vulnerability from github – Published: 2021-12-29 00:00 – Updated: 2022-01-13 00:01

Details

Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-20873"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-28T02:15:00Z",
    "severity": "HIGH"
  },
  "details": "Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL.",
  "id": "GHSA-qqj9-5rm5-5hhr",
  "modified": "2022-01-13T00:01:55Z",
  "published": "2021-12-29T00:00:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20873"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN66422035/index.html"
    },
    {
      "type": "WEB",
      "url": "https://support.yappli.co.jp/hc/ja/articles/4410249902745"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2021-20873 (GCVE-0-2021-20873)

Vulnerability from cvelistv5 – Published: 2021-12-28 01:30 – Updated: 2024-08-03 17:53

Summary

Severity

No CVSS data available.

CWE

Improper Authorization in Handler for Custom URL Scheme

Assigner

jpcert CNA under the jpcert root

CNA scorecard C 64/100 over 194 records in the last 180 days details

References

2 references

URL	Tags
https://support.yappli.co.jp/hc/ja/articles/44102…	x_refsource_MISC
https://jvn.jp/en/jp/JVN66422035/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Yappli, Inc.	Yappli	Affected: versions since v7.3.6 and prior to v9.30.0

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:53:23.086Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.yappli.co.jp/hc/ja/articles/4410249902745"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/jp/JVN66422035/index.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Yappli",
          "vendor": "Yappli, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "versions since v7.3.6 and prior to v9.30.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Improper Authorization in Handler for Custom URL Scheme",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-28T01:30:12.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.yappli.co.jp/hc/ja/articles/4410249902745"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jvn.jp/en/jp/JVN66422035/index.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2021-20873",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Yappli",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "versions since v7.3.6 and prior to v9.30.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Yappli, Inc."
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Authorization in Handler for Custom URL Scheme"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.yappli.co.jp/hc/ja/articles/4410249902745",
              "refsource": "MISC",
              "url": "https://support.yappli.co.jp/hc/ja/articles/4410249902745"
            },
            {
              "name": "https://jvn.jp/en/jp/JVN66422035/index.html",
              "refsource": "MISC",
              "url": "https://jvn.jp/en/jp/JVN66422035/index.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2021-20873",
    "datePublished": "2021-12-28T01:30:12.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:53:23.086Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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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.

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