FKIE_CVE-2021-20874

Vulnerability from fkie_nvd - Published: 2021-12-24 07:15 - Updated: 2026-06-17 03:34
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Incorrect permission assignment for critical resource vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to access arbitrary files on the server and obtain sensitive information via unspecified vectors.
References
vultures@jpcert.or.jphttps://groupsession.jp/info/info-news/security20211220Vendor Advisory
vultures@jpcert.or.jphttps://jvn.jp/en/jp/JVN79798166/index.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://groupsession.jp/info/info-news/security20211220Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/jp/JVN79798166/index.htmlThird Party Advisory
Impacted products
Vendor Product Version
groupsession groupsession *
groupsession groupsession *
groupsession groupsession *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "GroupSession Free edition, GroupSession byCloud, GroupSession ZION",
          "vendor": "Japan Total System Co.,Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier"
            }
          ]
        }
      ],
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:cloud:*:*:*",
              "matchCriteriaId": "D0AB1821-FA7C-41F4-9F3D-D61B778385F9",
              "versionEndIncluding": "5.1.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*",
              "matchCriteriaId": "B51AF142-FBF4-4602-BFD4-DD71D0EB0C3E",
              "versionEndIncluding": "5.1.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:*",
              "matchCriteriaId": "4027BB4D-AE22-43B5-A206-94E71D7B6687",
              "versionEndIncluding": "5.1.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Incorrect permission assignment for critical resource vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to access arbitrary files on the server and obtain sensitive information via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Una asignaci\u00f3n incorrecta de permisos para la vulnerabilidad de recursos cr\u00edticos en GroupSession Free edition versiones 5.1.1 y anteriores, GroupSession byCloud versiones 5.1.1 y anteriores, y GroupSession ZION versiones 5.1.1 y anteriores, permite a un atacante remoto no autenticado acceder a archivos arbitrarios en el servidor y obtener informaci\u00f3n confidencial por medio de vectores no especificados"
    }
  ],
  "id": "CVE-2021-20874",
  "lastModified": "2026-06-17T03:34:35.457",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "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": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-12-24T07:15:06.700",
  "references": [
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://groupsession.jp/info/info-news/security20211220"
    },
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/jp/JVN79798166/index.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://groupsession.jp/info/info-news/security20211220"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://jvn.jp/en/jp/JVN79798166/index.html"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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