GSD-2021-20756

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Viewing restrictions bypass vulnerability in Address of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to obtain the data of Address without the viewing privilege.
Aliases
Aliases
CVE-2021-20756
To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-20756",
    "description": "Viewing restrictions bypass vulnerability in Address of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to obtain the data of Address without the viewing privilege.",
    "id": "GSD-2021-20756"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20756"
      ],
      "details": "Viewing restrictions bypass vulnerability in Address of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to obtain the data of Address without the viewing privilege.",
      "id": "GSD-2021-20756",
      "modified": "2023-12-13T01:23:12.312193Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "vultures@jpcert.or.jp",
        "ID": "CVE-2021-20756",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Cybozu Garoon",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "4.0.0 to 5.0.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Cybozu, Inc."
            }
          ]
        }
      },
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "Viewing restrictions bypass vulnerability in Address of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to obtain the data of Address without the viewing privilege."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Viewing restrictions bypass"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://cs.cybozu.co.jp/2021/007206.html",
            "refsource": "MISC",
            "url": "https://cs.cybozu.co.jp/2021/007206.html"
          },
          {
            "name": "https://jvn.jp/en/jp/JVN54794245/index.html",
            "refsource": "MISC",
            "url": "https://jvn.jp/en/jp/JVN54794245/index.html"
          }
        ]
      }
    },
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        "nodes": [
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            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:cybozu:garoon:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.0.2",
                "versionStartIncluding": "4.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2021-20756"
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        "description": {
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              "value": "Viewing restrictions bypass vulnerability in Address of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote authenticated attacker to obtain the data of Address without the viewing privilege."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-668"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://jvn.jp/en/jp/JVN54794245/index.html",
              "refsource": "MISC",
              "tags": [
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              "url": "https://jvn.jp/en/jp/JVN54794245/index.html"
            },
            {
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              "url": "https://cs.cybozu.co.jp/2021/007206.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2021-08-24T13:06Z",
      "publishedDate": "2021-08-18T06:15Z"
    }
  }
}



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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.


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.