ssa-088132
Vulnerability from csaf_siemens
Published
2024-07-09 00:00
Modified
2024-09-10 00:00
Summary
SSA-088132: Denial of Service Vulnerability in the OPC UA Server Implementations of Several Industrial Products

Notes

Summary
Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in several industrial products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the OPC UA server. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where fixes are not, or not yet available.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.


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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in several industrial products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the OPC UA server.\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where fixes are not, or not yet available.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
      },
      {
        "category": "general",
        "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens\u0027 underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter \"License Terms\"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens\u0027 Global Website (https://www.siemens.com/terms_of_use, hereinafter \"Terms of Use\"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-088132: Denial of Service Vulnerability in the OPC UA Server Implementations of Several Industrial Products - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-088132.html"
      },
      {
        "category": "self",
        "summary": "SSA-088132: Denial of Service Vulnerability in the OPC UA Server Implementations of Several Industrial Products - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-088132.json"
      }
    ],
    "title": "SSA-088132: Denial of Service Vulnerability in the OPC UA Server Implementations of Several Industrial Products",
    "tracking": {
      "current_release_date": "2024-09-10T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-088132",
      "initial_release_date": "2024-07-09T00:00:00Z",
      "revision_history": [
        {
          "date": "2024-07-09T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2024-09-10T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Updated currently no fix planned for SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor"
        }
      ],
      "status": "interim",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV7.5",
                "product": {
                  "name": "SIMATIC Energy Manager Basic",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC Energy Manager Basic"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV7.5",
                "product": {
                  "name": "SIMATIC Energy Manager PRO",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC Energy Manager PRO"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC IPC DiagBase",
                  "product_id": "3"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC IPC DiagBase"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC IPC DiagMonitor",
                  "product_id": "4"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC IPC DiagMonitor"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMIT V10",
                  "product_id": "5"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMIT V10"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV11.1",
                "product": {
                  "name": "SIMIT V11",
                  "product_id": "6"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMIT V11"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-52891",
      "cwe": {
        "id": "CWE-1325",
        "name": "Improperly Controlled Sequential Memory Allocation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in Siemens products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the server.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable the OPC UA server in the affected product, if possible and OPC UA is not used",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        },
        {
          "category": "mitigation",
          "details": "Restrict access to the OPC UA interface to trusted clients",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "3",
            "4",
            "5"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V11.1 or later version",
          "product_ids": [
            "6"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109820441/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 or later version",
          "product_ids": [
            "1",
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109827289/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6"
          ]
        }
      ],
      "title": "CVE-2023-52891"
    }
  ]
}


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