SSA-328042

Vulnerability from csaf_siemens - Published: 2021-11-09 00:00 - Updated: 2021-11-09 00:00
Summary
SSA-328042: File Parsing Vulnerabilities in OBJ Translator in NX

Notes

Summary
Siemens NX is affected by two vulnerabilities that could be triggered when the application reads OBJ 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. Siemens has released updates for the NX and recommends to update to the latest version. Siemens recommends to avoid opening of untrusted files from unknown sources.
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": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "Siemens NX is affected by two vulnerabilities that could be triggered when the application reads OBJ 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 updates for the NX and recommends to update to the latest version. Siemens recommends to avoid opening of untrusted files from unknown sources.",
        "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-328042: File Parsing Vulnerabilities in OBJ Translator in NX - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-328042.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-328042: File Parsing Vulnerabilities in OBJ Translator in NX - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-328042.txt"
      },
      {
        "category": "self",
        "summary": "SSA-328042: File Parsing Vulnerabilities in OBJ Translator in NX - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-328042.json"
      }
    ],
    "title": "SSA-328042: File Parsing Vulnerabilities in OBJ Translator in NX",
    "tracking": {
      "current_release_date": "2021-11-09T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-328042",
      "initial_release_date": "2021-11-09T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-11-09T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V1973.3700",
                "product": {
                  "name": "NX 1953 Series",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "NX 1953 Series"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V1988",
                "product": {
                  "name": "NX 1980 Series",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "NX 1980 Series"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-41535",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected application contains a use-after-free vulnerability while parsing OBJ files.\n\nAn attacker could leverage this vulnerability to execute code in the context of the current process (ZDI-CAN-13771).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-41535 - NX 1953 Series",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-41535 - NX 1980 Series",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-41535 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-41535.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V1973.3700 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1988 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "mitigation",
          "details": "Avoid opening files from unknown sources in NX",
          "product_ids": [
            "1",
            "2"
          ]
        }
      ],
      "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:T/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-41535"
    },
    {
      "cve": "CVE-2021-41538",
      "cwe": {
        "id": "CWE-824",
        "name": "Access of Uninitialized Pointer"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected application is vulnerable to information disclosure by unexpected access to an uninitialized pointer while parsing user-supplied OBJ files.\n\nAn attacker could leverage this vulnerability to leak information from unexpected memory locations (ZDI-CAN-13770).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-41538 - NX 1953 Series",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-41538 - NX 1980 Series",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-41538 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-41538.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V1973.3700 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1988 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "mitigation",
          "details": "Avoid opening files from unknown sources in NX",
          "product_ids": [
            "1",
            "2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-41538"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.