icsa-23-103-05
Vulnerability from csaf_cisa
Published
2023-04-14 20:06
Modified
2023-04-14 20:06
Summary
Siemens SCALANCE X-200IRT Devices

Notes

CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
Legal Notice
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/.
Risk evaluation
Successful exploitation of this vulnerability could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over the connection between legitimate clients and the affected device.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
Recommended Practices
When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
CISA also provides a section for control systems security recommended practices on the ICS webpage at cisa.gov/ics. 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.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices
No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories


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{
  "document": {
    "acknowledgments": [
      {
        "organization": "Siemens",
        "summary": "reporting this vulnerability 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-US",
    "notes": [
      {
        "category": "general",
        "text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
        "title": "CISA Disclaimer"
      },
      {
        "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": "summary",
        "text": "Successful exploitation of this vulnerability could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over the connection between legitimate clients and the affected device.",
        "title": "Risk evaluation"
      },
      {
        "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 risk of exploitation of this vulnerability. Specifically, users should:",
        "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 secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current 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 at cisa.gov/ics. 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": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics 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"
      },
      {
        "category": "general",
        "text": "No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.",
        "title": "Recommended Practices"
      },
      {
        "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"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SSA-479249: Weak Encryption Vulnerability in SCALANCE X-200IRT Devices - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-479249.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-103-05 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-103-05.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-103-05 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-05"
      },
      {
        "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://us-cert.cisa.gov/ics/Recommended-Practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://cisa.gov/ics"
      },
      {
        "category": "external",
        "summary": "SSA-479249: Weak Encryption Vulnerability in SCALANCE X-200IRT Devices - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-479249.html"
      },
      {
        "category": "external",
        "summary": "SSA-479249: Weak Encryption Vulnerability in SCALANCE X-200IRT Devices - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-479249.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-479249: Weak Encryption Vulnerability in SCALANCE X-200IRT Devices - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-479249.txt"
      }
    ],
    "title": "Siemens SCALANCE X-200IRT Devices",
    "tracking": {
      "current_release_date": "2023-04-14T20:06:05.882853Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-103-05",
      "initial_release_date": "2023-04-14T20:06:05.882853Z",
      "revision_history": [
        {
          "date": "2023-04-14T20:06:05.882853Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "CSAF Creation Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X200-4P IRT (6GK5200-4AH00-2BA3)",
                  "product_id": "CSAFPID-0001",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5200-4AH00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X200-4P IRT (6GK5200-4AH00-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X201-3P IRT (6GK5201-3BH00-2BA3)",
                  "product_id": "CSAFPID-0002",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5201-3BH00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X201-3P IRT (6GK5201-3BH00-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X201-3P IRT PRO (6GK5201-3JR00-2BA6)",
                  "product_id": "CSAFPID-0003",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5201-3JR00-2BA6"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X201-3P IRT PRO (6GK5201-3JR00-2BA6)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X202-2IRT (6GK5202-2BB00-2BA3)",
                  "product_id": "CSAFPID-0004",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5202-2BB00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X202-2IRT (6GK5202-2BB00-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X202-2IRT (6GK5202-2BB10-2BA3)",
                  "product_id": "CSAFPID-0005",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5202-2BB10-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X202-2IRT (6GK5202-2BB10-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X202-2P IRT (6GK5202-2BH00-2BA3)",
                  "product_id": "CSAFPID-0006",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5202-2BH00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X202-2P IRT (6GK5202-2BH00-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X202-2P IRT PRO (6GK5202-2JR00-2BA6)",
                  "product_id": "CSAFPID-0007",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5202-2JR00-2BA6"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X202-2P IRT PRO (6GK5202-2JR00-2BA6)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X204IRT (6GK5204-0BA00-2BA3)",
                  "product_id": "CSAFPID-0008",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5204-0BA00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X204IRT (6GK5204-0BA00-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X204IRT (6GK5204-0BA10-2BA3)",
                  "product_id": "CSAFPID-0009",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5204-0BA10-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X204IRT (6GK5204-0BA10-2BA3)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE X204IRT PRO (6GK5204-0JA00-2BA6)",
                  "product_id": "CSAFPID-00010",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5204-0JA00-2BA6"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE X204IRT PRO (6GK5204-0JA00-2BA6)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE XF201-3P IRT (6GK5201-3BH00-2BD2)",
                  "product_id": "CSAFPID-00011",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5201-3BH00-2BD2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XF201-3P IRT (6GK5201-3BH00-2BD2)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE XF202-2P IRT (6GK5202-2BH00-2BD2)",
                  "product_id": "CSAFPID-00012",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5202-2BH00-2BD2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XF202-2P IRT (6GK5202-2BH00-2BD2)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE XF204-2BA IRT (6GK5204-2AA00-2BD2)",
                  "product_id": "CSAFPID-00013",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5204-2AA00-2BD2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XF204-2BA IRT (6GK5204-2AA00-2BD2)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SCALANCE XF204IRT (6GK5204-0BA00-2BF2)",
                  "product_id": "CSAFPID-00014",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5204-0BA00-2BF2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XF204IRT (6GK5204-0BA00-2BF2)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV5.5.2",
                "product": {
                  "name": "SIPLUS NET SCALANCE X202-2P IRT (6AG1202-2BH00-2BA3)",
                  "product_id": "CSAFPID-00015",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6AG1202-2BH00-2BA3"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SIPLUS NET SCALANCE X202-2P IRT (6AG1202-2BH00-2BA3)"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-29054",
      "cwe": {
        "id": "CWE-326",
        "name": "Inadequate Encryption Strength"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The SSH server on affected devices is configured to offer weak ciphers by default.\r\n\r\nThis could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data\r\npassed over the connection between legitimate clients and the affected device.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006",
          "CSAFPID-0007",
          "CSAFPID-0008",
          "CSAFPID-0009",
          "CSAFPID-00010",
          "CSAFPID-00011",
          "CSAFPID-00012",
          "CSAFPID-00013",
          "CSAFPID-00014",
          "CSAFPID-00015"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "nvd.nist.gov",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29054"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V5.5.2 or later version",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109817790/"
        },
        {
          "category": "workaround",
          "details": "Configure the SSH clients to make use of the following strong key exchange ciphers",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015"
          ]
        },
        {
          "category": "workaround",
          "details": "Add only trusted SSH client public keys to ROS and allow access to those clients only",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015"
          ]
        },
        {
          "category": "mitigation",
          "details": "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",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H/E:P/RL:U/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00015"
          ]
        }
      ],
      "title": "CVE-2023-29054"
    }
  ]
}


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Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.