{
  "document": {
    "title": "SSA-740908: File Parsing Vulnerabilities in JT Translator in NX",
    "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-740908",
      "status": "final",
      "version": "1",
      "revision_history": [
        {
          "number": "1",
          "legacy_version": "1.0",
          "date": "2021-11-09T00:00:00Z",
          "summary": "Publication Date"
        }
      ],
      "initial_release_date": "2021-11-09T00:00:00Z",
      "current_release_date": "2021-11-09T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      }
    },
    "notes": [
      {
        "title": "Summary",
        "category": "summary",
        "text": "Siemens NX is affected by two vulnerabilities that could be triggered when the application reads JT files. If a user is tricked to open a malicious file with the affected application, this could lead to an access violation, and potentially also to arbitrary code execution on the target host system.\n\nSiemens has released an update for the NX 1980 Series and recommends to update to the latest version. 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-740908.pdf",
        "summary": "SSA-740908: File Parsing Vulnerabilities in JT Translator in NX - PDF Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-740908.txt",
        "summary": "SSA-740908: File Parsing Vulnerabilities in JT Translator in NX - TXT Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-740908.json",
        "summary": "SSA-740908: File Parsing Vulnerabilities in JT Translator in NX - CSAF Version"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "name": "Siemens",
        "category": "vendor",
        "branches": [
          {
            "name": "NX 1980 Series",
            "category": "product_name",
            "branches": [
              {
                "name": "< V1984",
                "category": "product_version_range",
                "product": {
                  "product_id": "1",
                  "name": "NX 1980 Series"
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "title": "CVE-2021-41533",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The affected application is vulnerable to an out of bounds read past the end of an allocated buffer when parsing JT files.\n\nAn attacker could leverage this vulnerability to leak information in the context of the current process (ZDI-CAN-13565)."
        }
      ],
      "cve": "CVE-2021-41533",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:T/RC:C"
          },
          "products": [
            "1"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V1984 or later version",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "product_ids": [
            "1"
          ],
          "category": "mitigation",
          "details": "Avoid opening files from unknown sources in NX"
        }
      ],
      "references": [
        {
          "url": "https://support.sw.siemens.com/",
          "summary": "CVE-2021-41533 - NX 1980 Series"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-41533.json",
          "summary": "CVE-2021-41533 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2021-41534",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The affected application is vulnerable to an out of bounds read past the end of an allocated buffer when parsing JT files.\n\nAn attacker could leverage this vulnerability to leak information in the context of the current process (ZDI-CAN-13703)."
        }
      ],
      "cve": "CVE-2021-41534",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:T/RC:C"
          },
          "products": [
            "1"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V1984 or later version",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "product_ids": [
            "1"
          ],
          "category": "mitigation",
          "details": "Avoid opening files from unknown sources in NX"
        }
      ],
      "references": [
        {
          "url": "https://support.sw.siemens.com/",
          "summary": "CVE-2021-41534 - NX 1980 Series"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-41534.json",
          "summary": "CVE-2021-41534 Mitre 5.0 json"
        }
      ]
    }
  ]
}