{
  "document": {
    "title": "SSA-109294: Scene File Parsing Vulnerability in Simcenter STAR-CCM+ Viewer",
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "publisher": {
      "name": "Siemens ProductCERT",
      "contact_details": "productcert@siemens.com",
      "category": "vendor",
      "namespace": "https://www.siemens.com"
    },
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "tracking": {
      "id": "SSA-109294",
      "status": "final",
      "version": "1",
      "revision_history": [
        {
          "number": "1",
          "legacy_version": "1.0",
          "date": "2021-09-14T00:00:00Z",
          "summary": "Publication Date"
        }
      ],
      "initial_release_date": "2021-09-14T00:00:00Z",
      "current_release_date": "2021-09-14T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      }
    },
    "notes": [
      {
        "title": "Summary",
        "category": "summary",
        "text": "Siemens Simcenter STAR-CCM+ Viewer is affected by a vulnerability that could be triggered when the application reads scene (.sce) files. If a user is tricked to open a malicious file with the affected application, this could lead to a crash, and potentially also to arbitrary code execution or data extraction on the target host system.\n\nSiemens has released an update for Simcenter STAR-CCM+ Viewer and recommends to update to the latest version to fix the vulnerability. Siemens recommends to avoid opening of untrusted files from unknown sources."
      },
      {
        "title": "General Recommendations",
        "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' 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": "Additional Resources",
        "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": "Terms of Use",
        "category": "legal_disclaimer",
        "text": "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."
      }
    ],
    "references": [
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-109294.pdf",
        "summary": "SSA-109294: Scene File Parsing Vulnerability in Simcenter STAR-CCM+ Viewer - PDF Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-109294.txt",
        "summary": "SSA-109294: Scene File Parsing Vulnerability in Simcenter STAR-CCM+ Viewer - TXT Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-109294.json",
        "summary": "SSA-109294: Scene File Parsing Vulnerability in Simcenter STAR-CCM+ Viewer - CSAF Version"
      }
    ],
    "acknowledgments": [
      {
        "organization": "Trend Micro Zero Day Initiative",
        "summary": "coordinated disclosure"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "name": "Siemens",
        "category": "vendor",
        "branches": [
          {
            "name": "Simcenter STAR-CCM+ Viewer",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2021.2.1",
                "category": "product_version_range",
                "product": {
                  "product_id": "1",
                  "name": "Simcenter STAR-CCM+ Viewer"
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "title": "CVE-2021-25665",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The starview+.exe application lacks proper validation of user-supplied data when parsing scene files. This could result in an out of bounds write past the end of an allocated structure.\n\nAn attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13700)"
        }
      ],
      "cve": "CVE-2021-25665",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "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"
          },
          "products": [
            "1"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V2021.2.1 or later version",
          "url": "https://community.sw.siemens.com/s/article/Simcenter-STAR-CCM-Viewer-Download"
        },
        {
          "product_ids": [
            "1"
          ],
          "category": "mitigation",
          "details": "Do not open untrusted scene files from unknown sources"
        }
      ],
      "references": [
        {
          "url": "https://community.sw.siemens.com/s/article/Simcenter-STAR-CCM-Viewer-Download",
          "summary": "CVE-2021-25665 - Simcenter STAR-CCM+ Viewer"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-25665.json",
          "summary": "CVE-2021-25665 Mitre 5.0 json"
        }
      ]
    }
  ]
}