icsa-23-080-04
Vulnerability from csaf_cisa
Published
2023-03-31 17:50
Modified
2023-03-31 17:50
Summary
Siemens RADIUS Client of SIPROTEC 5 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
The RADIUS client implementation of the VxWorks platform in SIPROTEC 5 devices contains a denial-of-service vulnerability that could be triggered when a specially crafted packet is sent by a RADIUS server.
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 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
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Recommended Practices
Do not click web links or open attachments in unsolicited email messages.
Recommended Practices
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Recommended Practices
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
Recommended Practices
No known public exploits specifically target this vulnerability.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories


To clipboard 

{
  "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": "The RADIUS client implementation of the VxWorks platform in SIPROTEC 5 devices contains a denial-of-service vulnerability that could be triggered when a specially crafted packet is sent by a RADIUS server. ",
        "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 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": "CISA also recommends users take the following measures to protect themselves from social engineering attacks:",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Do not click web links or open attachments in unsolicited email messages.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "No known public exploits specifically target this vulnerability.",
        "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-726834: Denial of Service Vulnerability in the RADIUS Client of SIPROTEC 5 Devices - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-726834.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-080-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-080-04.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-080-04 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-080-04"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
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        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ics/Recommended-Practices"
      },
      {
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        "summary": "Recommended Practices",
        "url": "https://cisa.gov/ics"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ncas/tips/ST04-014"
      },
      {
        "category": "external",
        "summary": "SSA-726834: Denial of Service Vulnerability in the RADIUS Client of SIPROTEC 5 Devices - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-726834.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-726834: Denial of Service Vulnerability in the RADIUS Client of SIPROTEC 5 Devices - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-726834.txt"
      }
    ],
    "title": "Siemens RADIUS Client of SIPROTEC 5 Devices",
    "tracking": {
      "current_release_date": "2023-03-31T17:50:48.927471Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
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      },
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      "initial_release_date": "2023-03-31T17:50:48.927471Z",
      "revision_history": [
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          "legacy_version": "1",
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        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-38767",
      "cwe": {
        "id": "CWE-835",
        "name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An issue was discovered in Wind River VxWorks 6.9 and 7, that allows a specifically crafted packet sent by a Radius server, may cause Denial of Service during the IP Radius access procedure.",
          "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",
          "CSAFPID-00016",
          "CSAFPID-00017",
          "CSAFPID-00018",
          "CSAFPID-00019",
          "CSAFPID-00020",
          "CSAFPID-00021",
          "CSAFPID-00022",
          "CSAFPID-00023",
          "CSAFPID-00024",
          "CSAFPID-00025",
          "CSAFPID-00026",
          "CSAFPID-00027",
          "CSAFPID-00028"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "nvd.nist.gov",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38767"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Ensure that only a trusted, properly hardened RADIUS server is configured in your environment",
          "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",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020",
            "CSAFPID-00021",
            "CSAFPID-00022",
            "CSAFPID-00023",
            "CSAFPID-00024",
            "CSAFPID-00025",
            "CSAFPID-00026",
            "CSAFPID-00027",
            "CSAFPID-00028"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect the pre-shared key for RADIUS from unauthorized access",
          "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",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020",
            "CSAFPID-00021",
            "CSAFPID-00022",
            "CSAFPID-00023",
            "CSAFPID-00024",
            "CSAFPID-00025",
            "CSAFPID-00026",
            "CSAFPID-00027",
            "CSAFPID-00028"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "CSAFPID-0003"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757428/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-0004"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109765263/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-0005"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757430/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-00011",
            "CSAFPID-00013",
            "CSAFPID-00014",
            "CSAFPID-00024"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00010"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109751934/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00012"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757434/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00015"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757429/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00016"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740299/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00018"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109768011/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00019"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757431/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00020",
            "CSAFPID-00021",
            "CSAFPID-00022"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109757438/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00023"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109749865/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00025",
            "CSAFPID-00026",
            "CSAFPID-00027"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00028"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109796884/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.30 or later version",
          "product_ids": [
            "CSAFPID-00017"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109768428/"
        },
        {
          "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.\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. \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",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020",
            "CSAFPID-00021",
            "CSAFPID-00022",
            "CSAFPID-00023",
            "CSAFPID-00024",
            "CSAFPID-00025",
            "CSAFPID-00026",
            "CSAFPID-00027",
            "CSAFPID-00028"
          ]
        }
      ],
      "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:N/A:H/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",
            "CSAFPID-00016",
            "CSAFPID-00017",
            "CSAFPID-00018",
            "CSAFPID-00019",
            "CSAFPID-00020",
            "CSAFPID-00021",
            "CSAFPID-00022",
            "CSAFPID-00023",
            "CSAFPID-00024",
            "CSAFPID-00025",
            "CSAFPID-00026",
            "CSAFPID-00027",
            "CSAFPID-00028"
          ]
        }
      ],
      "title": "CVE-2022-38767"
    }
  ]
}


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