ICSA-23-080-04
Vulnerability from csaf_cisa
Published
2023-03-14 00:00
Modified
2023-03-14 00:00
Summary
Siemens RADIUS Client of SIPROTEC 5 Devices

Notes

Summary
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. Siemens has released updates for the affected products and recommends to update to the latest versions.
General Recommendations
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's reliability can thus be minimized by virtue of the grid design. Siemens 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. As 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. Recommended security guidelines can be found at: https://www.siemens.com/gridsecurity
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.
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/.
Advisory Conversion Disclaimer
This CISA CSAF advisory was converted from Siemens ProductCERT's CSAF advisory.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.
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 more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent 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 on cisa.gov. 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
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov 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.


To clipboard 

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        "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.\n\nSiemens has released updates for the affected products and recommends to update to the latest versions.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "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",
        "title": "General Recommendations"
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        "title": "Additional Resources"
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        "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"
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        "title": "Recommended Practices"
      },
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        "title": "Recommended Practices"
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        "title": "Recommended Practices"
      },
      {
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        "title": "Recommended Practices"
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  },
  "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-0010",
          "CSAFPID-0011",
          "CSAFPID-0012",
          "CSAFPID-0013",
          "CSAFPID-0014",
          "CSAFPID-0015",
          "CSAFPID-0016",
          "CSAFPID-0017",
          "CSAFPID-0018",
          "CSAFPID-0019",
          "CSAFPID-0020",
          "CSAFPID-0021",
          "CSAFPID-0022",
          "CSAFPID-0023",
          "CSAFPID-0024",
          "CSAFPID-0025",
          "CSAFPID-0026",
          "CSAFPID-0027",
          "CSAFPID-0028"
        ]
      },
      "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-0010",
            "CSAFPID-0011",
            "CSAFPID-0012",
            "CSAFPID-0013",
            "CSAFPID-0014",
            "CSAFPID-0015",
            "CSAFPID-0016",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021",
            "CSAFPID-0022",
            "CSAFPID-0023",
            "CSAFPID-0024",
            "CSAFPID-0025",
            "CSAFPID-0026",
            "CSAFPID-0027",
            "CSAFPID-0028"
          ]
        },
        {
          "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-0010",
            "CSAFPID-0011",
            "CSAFPID-0012",
            "CSAFPID-0013",
            "CSAFPID-0014",
            "CSAFPID-0015",
            "CSAFPID-0016",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021",
            "CSAFPID-0022",
            "CSAFPID-0023",
            "CSAFPID-0024",
            "CSAFPID-0025",
            "CSAFPID-0026",
            "CSAFPID-0027",
            "CSAFPID-0028"
          ]
        },
        {
          "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-0011",
            "CSAFPID-0013",
            "CSAFPID-0014",
            "CSAFPID-0024"
          ],
          "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-0010"
          ],
          "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-0012"
          ],
          "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-0015"
          ],
          "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-0016"
          ],
          "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-0018"
          ],
          "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-0019"
          ],
          "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-0020",
            "CSAFPID-0021",
            "CSAFPID-0022"
          ],
          "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-0023"
          ],
          "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-0025",
            "CSAFPID-0026",
            "CSAFPID-0027"
          ],
          "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-0028"
          ],
          "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-0017"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109768428/"
        }
      ],
      "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-0010",
            "CSAFPID-0011",
            "CSAFPID-0012",
            "CSAFPID-0013",
            "CSAFPID-0014",
            "CSAFPID-0015",
            "CSAFPID-0016",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021",
            "CSAFPID-0022",
            "CSAFPID-0023",
            "CSAFPID-0024",
            "CSAFPID-0025",
            "CSAFPID-0026",
            "CSAFPID-0027",
            "CSAFPID-0028"
          ]
        }
      ],
      "title": "CVE-2022-38767"
    }
  ]
}


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