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CVE-2021-28095

Estado: ModificadaMedia (4.8)—

OX Documents before 7.10.5-rev5 has Incorrect Access Control for documents that contain XML structures because hash collisions can occur, due to use of CRC32.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Open-xchange — Open-xchange Documents

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-28095",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-07-30T14:15:16.087",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/163569/OX-Documents-7.10.5-Improper-Authorization.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2021/Jul/37",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.open-xchange.com",
      "tags": [
        "Product"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/163569/OX-Documents-7.10.5-Improper-Authorization.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2021/Jul/37",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.open-xchange.com",
      "tags": [
        "Product"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-326"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OX Documents before 7.10.5-rev5 has Incorrect Access Control for documents that contain XML structures because hash collisions can occur, due to use of CRC32."
    },
    {
      "lang": "es",
      "value": "OX Documents versiones anteriores a 7.10.5-rev5, presenta un Control de Acceso Incorrecto para los documentos que contienen estructuras XML porque pueden ocurrir colisiones de hash, debido al uso de CRC32"
    }
  ],
  "lastModified": "2026-06-17T03:45:48.300",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:open-xchange:open-xchange_documents:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D28127A3-A3FE-46C2-B8E0-03CB04EC5E66",
              "versionEndExcluding": "7.10.5"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "0B75E278-B882-4395-B151-992DF2D8B27D"
            },
            {
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              "vulnerable": true,
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            },
            {
              "criteria": "cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C7226D34-BC97-441D-9538-D07875F31CB6"
            },
            {
              "criteria": "cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8D86F4BA-342B-4BBC-BB07-918677B62A14"
            },
            {
              "criteria": "cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ADCC1104-2694-443D-9230-3D465209B878"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}