ICSA-18-067-01
Vulnerability from csaf_cisa
Published
2018-03-08 00:00
Modified
2021-07-13 00:00
Summary
Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module (Update D)

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 these vulnerabilities could allow an attacker to upload a modified device configuration that could overwrite access authorization passwords, or allow an attacker to capture certain network traffic that could contain authorization passwords.
Critical infrastructure sectors
Energy
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet; Locate control system networks and remote devices behind firewalls, and isolate them from the business network; When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the 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-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the technical information paper, ICS-TIP-12-146-01B Targeted Cyber Intrusion Detection and Mitigation Strategies.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Exploitability
No known public exploits specifically target these vulnerabilities.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Ilya Karpov",
          "Dmitry Sklyarov"
        ],
        "organization": "Positive Technologies",
        "summary": "reporting these vulnerabilities to Siemens"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
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    "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 these vulnerabilities could allow an attacker to upload a modified device configuration that could overwrite access authorization passwords, or allow an attacker to capture certain network traffic that could contain authorization passwords.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Energy",
        "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 these vulnerabilities. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet; Locate control system networks and remote devices behind firewalls, and isolate them from the business network; When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the 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-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the technical information paper, ICS-TIP-12-146-01B Targeted Cyber Intrusion Detection and Mitigation Strategies.",
        "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"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target these vulnerabilities.",
        "title": "Exploitability"
      }
    ],
    "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-203306: Password Vulnerabilities in SIPROTEC 4 and SIPROTEC Compact Relay Families - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-203306.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-18-067-01 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2018/icsa-18-067-01.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-18-067-01 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-18-067-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-203306: Password Vulnerabilities in SIPROTEC 4 and SIPROTEC Compact Relay Families - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-203306: Password Vulnerabilities in SIPROTEC 4 and SIPROTEC Compact Relay Families - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-203306.txt"
      }
    ],
    "title": "Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module (Update D)",
    "tracking": {
      "current_release_date": "2021-07-13T00:00:00.000000Z",
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          "summary": "ICSA-18-067-01 Siemens SIPROTEC 4, SIPROTEC Compact, DIGSI 4, and EN100 Ethernet Module"
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  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V4.92",
                "product": {
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                }
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            ],
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          },
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                }
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                }
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                  "name": "SIPROTEC 4 7SJ66",
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                }
              }
            ],
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            "name": "SIPROTEC 4 7SJ66"
          },
          {
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              {
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                }
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                }
              }
            ],
            "category": "product_name",
            "name": "SIPROTEC Compact 7SK80"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-4839",
      "cwe": {
        "id": "CWE-326",
        "name": "Inadequate Encryption Strength"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker with local access to the engineering system or in a privileged network position and able to obtain certain network traffic could possibly reconstruct access authorization passwords. CVE-2018-4839 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N).",
          "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": [
        {
          "summary": "CVE-2018-4839 - DIGSI 4",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740980"
        },
        {
          "summary": "CVE-2018-4839 - EN100 Ethernet module DNP3 variant",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "summary": "CVE-2018-4839 - EN100 Ethernet module IEC 61850 variant",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC 4 7SD80",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742758"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC 4 7SJ61",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743551"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC 4 7SJ62",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743551"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC 4 7SJ64",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743551"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC 4 7SJ66",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743555"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC Compact 7SJ80",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742699"
        },
        {
          "summary": "CVE-2018-4839 - SIPROTEC Compact 7SK80",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742712"
        },
        {
          "summary": "CVE-2018-4839 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2018-4839.json"
        },
        {
          "category": "external",
          "summary": "cve.mitre.org",
          "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4839"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V4.92",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740980"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.05.00 and configure DIGSI 4 connection password",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "category": "none_available",
          "details": "Currently no remediation is available",
          "product_ids": [
            "CSAFPID-0003",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.30 and configure DIGSI 4 connection password",
          "product_ids": [
            "CSAFPID-0004"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.70",
          "product_ids": [
            "CSAFPID-0009"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742758"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.96",
          "product_ids": [
            "CSAFPID-00010",
            "CSAFPID-00011",
            "CSAFPID-00012"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743551"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.30",
          "product_ids": [
            "CSAFPID-00013"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109743555"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.77",
          "product_ids": [
            "CSAFPID-00014"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742699"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.77",
          "product_ids": [
            "CSAFPID-00015"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109742712"
        },
        {
          "category": "mitigation",
          "details": "Apply secure substation concept and Defense-in-Depth (see https://www.siemens.com/gridsecurity) or contact customer care to find specific solutions.",
          "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": "Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid\u0027s reliability can thus be minimized by virtue of the grid design.\n\nSiemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment.\n\nAs a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.\n\nRecommended security guidelines can be found at:\n\nhttps://www.siemens.com/gridsecurity",
          "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": 4.0,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/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-2018-4839"
    },
    {
      "cve": "CVE-2018-4840",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The device engineering mechanism allows an unauthenticated remote user to upload a modified device configuration overwriting access authorization passwords. CVE-2018-4840 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002",
          "CSAFPID-0003",
          "CSAFPID-0004",
          "CSAFPID-0005",
          "CSAFPID-0006"
        ]
      },
      "references": [
        {
          "summary": "CVE-2018-4840 - DIGSI 4",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740980"
        },
        {
          "summary": "CVE-2018-4840 - EN100 Ethernet module DNP3 variant",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "summary": "CVE-2018-4840 - EN100 Ethernet module IEC 61850 variant",
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "summary": "CVE-2018-4840 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2018-4840.json"
        },
        {
          "category": "external",
          "summary": "cve.mitre.org",
          "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4840"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V4.92",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740980"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.05.00 and configure DIGSI 4 connection password",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "category": "none_available",
          "details": "Currently no remediation is available",
          "product_ids": [
            "CSAFPID-0003",
            "CSAFPID-0005",
            "CSAFPID-0006"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.30 and configure DIGSI 4 connection password",
          "product_ids": [
            "CSAFPID-0004"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109745821"
        },
        {
          "category": "mitigation",
          "details": "Apply secure substation concept and Defense-in-Depth (see https://www.siemens.com/gridsecurity) or contact customer care to find specific solutions.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006"
          ]
        },
        {
          "category": "mitigation",
          "details": "Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid\u0027s reliability can thus be minimized by virtue of the grid design.\n\nSiemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment.\n\nAs a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.\n\nRecommended security guidelines can be found at:\n\nhttps://www.siemens.com/gridsecurity",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006"
          ]
        }
      ],
      "title": "CVE-2018-4840"
    }
  ]
}


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