icsa-22-167-10
Vulnerability from csaf_cisa
Published
2022-06-14 00:00
Modified
2022-06-14 00:00
Summary
Siemens SCALANCE XM-400 and XR-500

Notes

Summary
SCALANCE XM-400 and XR-500 devices contain a vulnerability in the OSPF protocol implementation that could allow an unauthenticated remote attacker to cause interruptions in the network. Siemens has released updates for the affected products and recommends to update to the latest versions.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
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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        "title": "Summary"
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      {
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
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                "name": "\u003cV6.5",
                "product": {
                  "name": "SCALANCE XR552-12M (2HR2)",
                  "product_id": "CSAFPID-0025",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5552-0AR00-2HR2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XR552-12M (2HR2)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cV6.5",
                "product": {
                  "name": "SCALANCE XR552-12M (2HR2, L3 int.)",
                  "product_id": "CSAFPID-0026",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6GK5552-0AR00-2AR2"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "SCALANCE XR552-12M (2HR2, L3 int.)"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-37182",
      "cwe": {
        "id": "CWE-354",
        "name": "Improper Validation of Integrity Check Value"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The OSPF protocol implementation in affected devices fails to verify the checksum and length fields in the OSPF LS Update messages.\n\nAn unauthenticated remote attacker could exploit this vulnerability to cause interruptions in the network by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an 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-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"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-37182 - SCALANCE XM408-4C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XM408-4C (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XM408-8C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XM408-8C (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XM416-4C",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XM416-4C (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 1x230V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 1x230V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 2x230V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 2x230V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 24V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR524-8C, 24V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 1x230V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 1x230V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 2x230V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 2x230V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 24V",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR526-8C, 24V (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR528-6M",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR528-6M (2HR2)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR528-6M (2HR2, L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR528-6M (L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR552-12M",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR552-12M (2HR2)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR552-12M (2HR2)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 - SCALANCE XR552-12M (2HR2, L3 int.)",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "summary": "CVE-2021-37182 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-37182.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V6.5 or later version",
          "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"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109809635/"
        },
        {
          "category": "mitigation",
          "details": "Disable OSPF in the layer 3 configuration menu (note that OSPF is disabled by default). The vulnerability is not exploitable, when OSPF is disabled",
          "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"
          ]
        },
        {
          "category": "mitigation",
          "details": "If OSPF is used, set a password for the OSPF interface and enable MD5 authentication",
          "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"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/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"
          ]
        }
      ],
      "title": "CVE-2021-37182"
    }
  ]
}


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