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GSD-2021-20693

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Improper access control vulnerability in Gurunavi App for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.
Aliases
Aliases
CVE-2021-20693
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-20693",
    "description": "Improper access control vulnerability in Gurunavi App for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.",
    "id": "GSD-2021-20693"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20693"
      ],
      "details": "Improper access control vulnerability in Gurunavi App for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.",
      "id": "GSD-2021-20693",
      "modified": "2023-12-13T01:23:12.165161Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "vultures@jpcert.or.jp",
        "ID": "CVE-2021-20693",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Gurunavi App",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Gurunavi, Inc."
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "Improper access control vulnerability in Gurunavi App for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Improper Access Control"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://jvn.jp/en/jp/JVN54025691/index.html",
            "refsource": "MISC",
            "url": "https://jvn.jp/en/jp/JVN54025691/index.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:gurunavi:gurunavi:*:*:*:*:*:iphone_os:*:*",
                "cpe_name": [],
                "versionEndIncluding": "11.1.2",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:gurunavi:gurunavi:*:*:*:*:*:android:*:*",
                "cpe_name": [],
                "versionEndIncluding": "10.0.10",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
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        "description": {
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              "lang": "en",
              "value": "Improper access control vulnerability in Gurunavi App for Android ver.10.0.10 and earlier and for iOS ver.11.1.2 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-863"
                }
              ]
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://jvn.jp/en/jp/JVN54025691/index.html",
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              "url": "https://jvn.jp/en/jp/JVN54025691/index.html"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-05-05T19:08Z",
      "publishedDate": "2021-04-26T01:15Z"
    }
  }
}



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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.
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  • 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.


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