SSA-396621

Vulnerability from csaf_siemens - Published: 2021-12-14 00:00 - Updated: 2021-12-14 00:00
Summary
SSA-396621: Multiple File Parsing Vulnerabilities in JTTK before V10.8.1.1 and JT Utilities before V12.8.1.1

Notes

Summary
JT Open Toolkit (JTTK) before V10.8.1.1 contains multiple vulnerabilities that could be triggered when it reads a maliciously crafted JT file. These vulnerabilities also affects JT Utilities before V12.8.1.1. If a user is tricked to open a malicious file with any of the affected products, this could lead the application to crash or potentially lead to arbitrary code execution. Siemens recommends to update to the latest versions and to limit opening of untrusted files from unknown sources in the affected products.
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": {
    "acknowledgments": [
      {
        "organization": "Bentley Systems Incorporated",
        "summary": "coordinated disclosure"
      }
    ],
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "JT Open Toolkit (JTTK) before V10.8.1.1 contains multiple vulnerabilities that could be triggered when it reads a maliciously crafted JT file. These vulnerabilities also affects JT Utilities before V12.8.1.1. If a user is tricked to open a malicious file with any of the affected products, this could lead the application to crash or potentially lead to arbitrary code execution.\n\nSiemens recommends to update to the latest versions and to limit opening of untrusted files from unknown sources in the affected products.",
        "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-396621: Multiple File Parsing Vulnerabilities in JTTK before V10.8.1.1 and JT Utilities before V12.8.1.1 - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-396621.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-396621: Multiple File Parsing Vulnerabilities in JTTK before V10.8.1.1 and JT Utilities before V12.8.1.1 - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-396621.txt"
      },
      {
        "category": "self",
        "summary": "SSA-396621: Multiple File Parsing Vulnerabilities in JTTK before V10.8.1.1 and JT Utilities before V12.8.1.1 - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-396621.json"
      }
    ],
    "title": "SSA-396621: Multiple File Parsing Vulnerabilities in JTTK before V10.8.1.1 and JT Utilities before V12.8.1.1",
    "tracking": {
      "current_release_date": "2021-12-14T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-396621",
      "initial_release_date": "2021-12-14T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-12-14T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V12.8.1.1",
                "product": {
                  "name": "JT Utilities",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "JT Utilities"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V10.8.1.1",
                "product": {
                  "name": "JTTK",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "JTTK"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-44449",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "summary",
          "text": "JTTK library in affected products contains an out of bounds write past the end of an allocated structure while parsing specially crafted JT files. This could allow an attacker to execute code in the context of the current process. (ZDI-CAN-14830)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-44449 - JT Utilities",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-44449 - JTTK",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-44449 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-44449.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V12.8.1.1 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V10.8.1.1 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "mitigation",
          "details": "Avoid to open untrusted files from unknown sources using JTTK",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Avoid to open untrusted files from unknown sources using JT Utilities",
          "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:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-44449"
    },
    {
      "cve": "CVE-2021-44450",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "summary",
          "text": "JTTK library in affected products is vulnerable to an out of bounds read past the end of an allocated buffer when parsing JT files. An attacker could leverage this vulnerability to leak information in the context of the current process. (ZDI-CAN-15055, ZDI-CAN-14915, ZDI-CAN-14865)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-44450 - JT Utilities",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-44450 - JTTK",
          "url": "https://support.sw.siemens.com/"
        },
        {
          "summary": "CVE-2021-44450 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-44450.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V12.8.1.1 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V10.8.1.1 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "mitigation",
          "details": "Avoid to open untrusted files from unknown sources using JTTK",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Avoid to open untrusted files from unknown sources using JT Utilities",
          "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:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-44450"
    }
  ]
}


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  • 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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Detection rules are retrieved from Rulezet.