{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "Several models of SINAMICS PERFECT HARMONY GH180 Drives are affected by a DHCP client vulnerability (CVE-2021-29998) in the integrated SCALANCE X206-1 device. The vulnerability could allow an attacker to cause a heap-based buffer overflow on that device and use it to get access to the drive\u0027s internal network.\n\nThe list of affected drive models can be found in the section \"Additional Information\" below.\n\nRecently manufactured drives are no longer affected. For older drives, Siemens provides detailed remediation advise via customer support.",
        "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: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\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-910883: DHCP Client Vulnerability in SINAMICS PERFECT HARMONY GH180 Drives - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-910883.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-910883: DHCP Client Vulnerability in SINAMICS PERFECT HARMONY GH180 Drives - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-910883.txt"
      },
      {
        "category": "self",
        "summary": "SSA-910883: DHCP Client Vulnerability in SINAMICS PERFECT HARMONY GH180 Drives - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-910883.json"
      }
    ],
    "title": "SSA-910883: DHCP Client Vulnerability in SINAMICS PERFECT HARMONY GH180 Drives",
    "tracking": {
      "current_release_date": "2022-07-12T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-910883",
      "initial_release_date": "2022-07-12T00:00:00Z",
      "revision_history": [
        {
          "date": "2022-07-12T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "Drives manufactured since 2015 and prior to 2022",
                "product": {
                  "name": "SINAMICS PERFECT HARMONY GH180 Drives",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SINAMICS PERFECT HARMONY GH180 Drives"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-29998",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "There is a DHCP vulnerability in Wind River VxWorks, for versions prior to 6.5. The vulnerability \r\ncould cause a possible heap overflow if exploited.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable the DHCP client and use static IP address configuration instead",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Ensure that the drive internal network is not externally connected (which is the default configuration in all drives as described in the operational manual)",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "mitigation",
          "details": "Contact your Siemens customer support for detailed information how to remediate the issue in affected drives",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Drives manufactured since 2022 are not affected",
          "product_ids": [
            "1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "title": "CVE-2021-29998"
    }
  ]
}