var-202005-1246
Vulnerability from variot

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability.The specific flaw exists within the processing of IOCTL 0x520B in datacore.exe. The issue results from the lack of proper validation of user-supplied data, which can trigger an overflow of a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator.

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{
  "affected_products": {
    "_id": null,
    "data": [
      {
        "_id": null,
        "model": "webaccess/scada",
        "scope": null,
        "trust": 0.7,
        "vendor": "advantech",
        "version": null
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ]
  },
  "credits": {
    "_id": null,
    "data": "Z0mb1E",
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ],
    "trust": 0.7
  },
  "cvss": {
    "_id": null,
    "data": [
      {
        "cvssV2": [],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "ZDI",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 3.9,
            "id": "ZDI-20-606",
            "impactScore": 5.9,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 0.7,
            "userInteraction": "NONE",
            "vectorString": "AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "ZDI",
            "id": "ZDI-20-606",
            "trust": 0.7,
            "value": "CRITICAL"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ]
  },
  "description": {
    "_id": null,
    "data": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability.The specific flaw exists within the processing of IOCTL 0x520B in datacore.exe.  The issue results from the lack of proper validation of user-supplied data, which can trigger an overflow of a fixed-length heap-based buffer.  An attacker can leverage this vulnerability to execute code in the context of Administrator.",
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ],
    "trust": 0.7
  },
  "external_ids": {
    "_id": null,
    "data": [
      {
        "db": "ZDI_CAN",
        "id": "ZDI-CAN-9935",
        "trust": 0.7
      },
      {
        "db": "ZDI",
        "id": "ZDI-20-606",
        "trust": 0.7
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ]
  },
  "id": "VAR-202005-1246",
  "iot": {
    "_id": null,
    "data": true,
    "sources": [
      {
        "db": "VARIoT devices database",
        "id": null
      }
    ],
    "trust": 0.6405517
  },
  "last_update_date": "2022-05-17T01:40:54.071000Z",
  "patch": {
    "_id": null,
    "data": [
      {
        "title": "Advantech has issued an update to correct this vulnerability.",
        "trust": 0.7,
        "url": "https://www.us-cert.gov/ics/advisories/icsa-20-128-36"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ]
  },
  "references": {
    "_id": null,
    "data": [
      {
        "trust": 0.7,
        "url": "https://www.us-cert.gov/ics/advisories/icsa-20-128-36"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ]
  },
  "sources": {
    "_id": null,
    "data": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606",
        "ident": null
      }
    ]
  },
  "sources_release_date": {
    "_id": null,
    "data": [
      {
        "date": "2020-05-08T00:00:00",
        "db": "ZDI",
        "id": "ZDI-20-606",
        "ident": null
      }
    ]
  },
  "sources_update_date": {
    "_id": null,
    "data": [
      {
        "date": "2020-05-08T00:00:00",
        "db": "ZDI",
        "id": "ZDI-20-606",
        "ident": null
      }
    ]
  },
  "title": {
    "_id": null,
    "data": "Advantech WebAccess/SCADA DATACORE IOCTL 0x520B Heap-based Buffer Overflow Remote Code Execution Vulnerability",
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-606"
      }
    ],
    "trust": 0.7
  }
}


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