{
  "document": {
    "acknowledgments": [
      {
        "organization": "Siemens ProductCERT",
        "summary": "reporting these vulnerabilities to CISA."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Parasolid is affected by out of bounds write vulnerabilities that could be triggered when the application reads files in X_T format. If a user is tricked to open a malicious file with the affected applications, an attacker could leverage the vulnerability to perform remote code execution in the context of the current process.\n\nSiemens has released updates for the affected products and recommends to update to the latest versions.",
        "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"
      },
      {
        "category": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "other",
        "text": "This CISA CSAF advisory was converted from Siemens ProductCERT\u0027s CSAF advisory.",
        "title": "Advisory Conversion Disclaimer"
      },
      {
        "category": "other",
        "text": "Multiple",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Germany",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Locate control system networks and remote devices behind firewalls and isolate them from business networks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-190839: X_T File Parsing Vulnerabilities in Parasolid - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-190839.json"
      },
      {
        "category": "self",
        "summary": "SSA-190839: X_T File Parsing Vulnerabilities in Parasolid - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-190839.html"
      },
      {
        "category": "self",
        "summary": "SSA-190839: X_T File Parsing Vulnerabilities in Parasolid - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-190839.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-190839: X_T File Parsing Vulnerabilities in Parasolid - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-190839.txt"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-257-02 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-257-02.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-257-02 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/ICSA-23-257-02"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Siemens Parasolid",
    "tracking": {
      "current_release_date": "2023-09-12T00:00:00Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1"
        }
      },
      "id": "ICSA-23-257-02",
      "initial_release_date": "2023-09-12T00:00:00Z",
      "revision_history": [
        {
          "date": "2023-09-12T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "interim",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV34.1.258",
                "product": {
                  "name": "Parasolid V34.1",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "Parasolid V34.1"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV35.0.253",
                "product": {
                  "name": "Parasolid V35.0",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV35.0.260",
                "product": {
                  "name": "Parasolid V35.0",
                  "product_id": "3"
                }
              }
            ],
            "category": "product_name",
            "name": "Parasolid V35.0"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV35.1.184",
                "product": {
                  "name": "Parasolid V35.1",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV35.1.246",
                "product": {
                  "name": "Parasolid V35.1",
                  "product_id": "5"
                }
              }
            ],
            "category": "product_name",
            "name": "Parasolid V35.1"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV36.0.142",
                "product": {
                  "name": "Parasolid V36.0",
                  "product_id": "6"
                }
              },
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV36.0.156",
                "product": {
                  "name": "Parasolid V36.0",
                  "product_id": "7"
                }
              }
            ],
            "category": "product_name",
            "name": "Parasolid V36.0"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-41032",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected application contains an out of bounds write past the end of an allocated structure while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-21263)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "4",
          "6"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Do not open untrusted X_T files in Parasolid",
          "product_ids": [
            "1",
            "2",
            "4",
            "6"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V34.1.258 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V35.0.253 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V35.1.184 or later version",
          "product_ids": [
            "4"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V36.0.142 or later version",
          "product_ids": [
            "6"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "4",
            "6"
          ]
        }
      ],
      "title": "CVE-2023-41032"
    },
    {
      "cve": "CVE-2023-41033",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected application contains an out of bounds write past the end of an allocated structure while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-21266)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "3",
          "5",
          "7"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Do not open untrusted X_T files in Parasolid",
          "product_ids": [
            "3",
            "5",
            "7"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V35.0.260 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V35.1.246 or later version",
          "product_ids": [
            "5"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V36.0.156 or later version",
          "product_ids": [
            "7"
          ],
          "url": "https://support.sw.siemens.com/en-US/product/258316782/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "3",
            "5",
            "7"
          ]
        }
      ],
      "title": "CVE-2023-41033"
    }
  ]
}