cve-2023-27321
Vulnerability from cvelistv5
Published
2024-05-07 22:55
Modified
2024-08-02 12:09
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
OPC Foundation UA .NET Standard ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability
References
zdi-disclosures@trendmicro.comhttps://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-27321.pdf
zdi-disclosures@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-23-548/
af854a3a-2127-422b-91ae-364da2661108https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-27321.pdf
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/advisories/ZDI-23-548/
Impacted products
Vendor Product Version
Show details on NVD website

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{
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      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:opcfoundation:unified_architecture_.net-standard:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "unified_architecture_.net-standard",
            "vendor": "opcfoundation",
            "versions": [
              {
                "status": "affected",
                "version": "1.4.371.60"
              }
            ]
          }
        ],
        "metrics": [
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                "id": "CVE-2023-27321",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-08T15:27:13.124910Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:24:44.157Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
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        {
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      "dateAssigned": "2023-02-28T12:05:53.841-06:00",
      "datePublic": "2023-05-04T17:17:13.102-05:00",
      "descriptions": [
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          "value": "OPC Foundation UA .NET Standard ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20505."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
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            "version": "3.0"
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          "format": "CVSS"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption (\u0027Resource Exhaustion\u0027)",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2024-05-07T22:55:01.898Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
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    "datePublished": "2024-05-07T22:55:01.898Z",
    "dateReserved": "2023-02-28T17:58:45.477Z",
    "dateUpdated": "2024-08-02T12:09:43.438Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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  }
}


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