icsa-24-074-09
Vulnerability from csaf_cisa
Published
2024-03-12 00:00
Modified
2024-03-12 00:00
Summary
Siemens Sinteso EN Cerberus PRO EN Fire Protection Systems

Notes

Summary
Several products used in Sinteso EN and Cerberus PRO EN Fire Protection Systems contain buffer overflow vulnerabilities in the network communication stack. Successful exploitation of the vulnerabilities could allow an unauthenticated attacker, who gained access to the fire protection system network, to execute arbitrary code on the affected products (CVE-2024-22039) or create a denial of service condition (CVE-2024-22040, CVE-2024-22041). Product-specific impact of the individual vulnerabilities is documented in the chapter "Vulnerability Description". Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.
General Recommendations
As a general security measure Siemens strongly recommends to protect network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices in order to run the devices in a protected IT environment.
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 this vulnerability.
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.



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        "category": "summary",
        "text": "Several products used in Sinteso EN and Cerberus PRO EN Fire Protection Systems contain buffer overflow vulnerabilities in the network communication stack. Successful exploitation of the vulnerabilities could allow an unauthenticated attacker, who gained access to the fire protection system network, to execute arbitrary code on the affected products (CVE-2024-22039) or create a denial of service condition (CVE-2024-22040, CVE-2024-22041).\n\nProduct-specific impact of the individual vulnerabilities is documented in the chapter \"Vulnerability Description\".\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "As a general security measure Siemens strongly recommends to protect network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices in order to run the devices in a protected IT environment.",
        "title": "General Recommendations"
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        "title": "Additional Resources"
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        "category": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens\u0027 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\u0027 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.",
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        "text": "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
        "title": "Recommended Practices"
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        "title": "Recommended Practices"
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        "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 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.",
        "title": "Recommended Practices"
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    "title": "Siemens Sinteso EN Cerberus PRO EN Fire Protection Systems",
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              },
              {
                "category": "product_version_range",
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              }
            ],
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        ],
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        "name": "Siemens"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-22039",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The network communication library in affected systems does not validate the length of certain X.509 certificate attributes which might result in a stack-based buffer overflow.\r\nThis could allow an unauthenticated remote attacker to execute code on the underlying operating system with root privileges.",
          "title": "Summary"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; code execution might be possible on the underlying operating system with the privileges of the engineering tool user account.",
          "title": "For Cerberus PRO EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; code execution might be possible on the underlying operating system with the privileges of the engineering tool user account.",
          "title": "For Sinteso FS20 EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the app in the fire system network; possible impact is limited to the app, not the underlying operating system.",
          "title": "For Sinteso Mobile"
        }
      ],
      "product_status": {
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          "CSAFPID-0001",
          "CSAFPID-0003",
          "CSAFPID-0005",
          "CSAFPID-0007",
          "CSAFPID-0009",
          "CSAFPID-0011",
          "CSAFPID-0013",
          "CSAFPID-0015",
          "CSAFPID-0017"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V3.0.0 or later version",
          "product_ids": [
            "CSAFPID-0017"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.0.5016 or later version",
          "product_ids": [
            "CSAFPID-0005",
            "CSAFPID-0013"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.2.5015 or later version",
          "product_ids": [
            "CSAFPID-0007",
            "CSAFPID-0015"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to MP8 or later version",
          "product_ids": [
            "CSAFPID-0009",
            "CSAFPID-0011"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to IP8 or later version",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0003"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
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            "CSAFPID-0005",
            "CSAFPID-0007",
            "CSAFPID-0011",
            "CSAFPID-0013",
            "CSAFPID-0015"
          ]
        },
        {
          "cvss_v3": {
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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          ]
        },
        {
          "cvss_v3": {
            "baseScore": 9.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0009"
          ]
        },
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0017"
          ]
        }
      ],
      "title": "CVE-2024-22039"
    },
    {
      "cve": "CVE-2024-22040",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The network communication library in affected systems insufficiently validates HMAC values which might result in a buffer overread.\r\nThis could allow an unauthenticated remote attacker to crash the network service.",
          "title": "Summary"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; possible impact is limited to the tool, not the underlying operating system.",
          "title": "For Cerberus PRO EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; possible impact is limited to the tool, not the underlying operating system.",
          "title": "For Sinteso FS20 EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the app in the fire system network; possible impact is limited to the app, not the underlying operating system.",
          "title": "For Sinteso Mobile"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0002",
          "CSAFPID-0004",
          "CSAFPID-0006",
          "CSAFPID-0008",
          "CSAFPID-0010",
          "CSAFPID-0012",
          "CSAFPID-0014",
          "CSAFPID-0016",
          "CSAFPID-0018"
        ]
      },
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "CSAFPID-0018"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "CSAFPID-0002",
            "CSAFPID-0010"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.3.5617 or later version",
          "product_ids": [
            "CSAFPID-0008",
            "CSAFPID-0016"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.3.5618 or later version",
          "product_ids": [
            "CSAFPID-0006",
            "CSAFPID-0014"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to MP8 SR4 or later version",
          "product_ids": [
            "CSAFPID-0012"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to IP8 SR4 or later version",
          "product_ids": [
            "CSAFPID-0004"
          ]
        }
      ],
      "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-0004",
            "CSAFPID-0006",
            "CSAFPID-0008",
            "CSAFPID-0012",
            "CSAFPID-0014",
            "CSAFPID-0016"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0002"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0010"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0018"
          ]
        }
      ],
      "title": "CVE-2024-22040"
    },
    {
      "cve": "CVE-2024-22041",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The network communication library in affected systems improperly handles memory buffers when parsing X.509 certificates.\r\nThis could allow an unauthenticated remote attacker to crash the network service.",
          "title": "Summary"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; possible impact is limited to the tool, not the underlying operating system.",
          "title": "For Cerberus PRO EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the engineering tool in the fire system network; possible impact is limited to the tool, not the underlying operating system.",
          "title": "For Sinteso FS20 EN Engineering Tool"
        },
        {
          "category": "summary",
          "text": "Successful exploitation requires an on-path attacker that intercepts the communication of the app in the fire system network; possible impact is limited to the app, not the underlying operating system.",
          "title": "For Sinteso Mobile"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0002",
          "CSAFPID-0004",
          "CSAFPID-0006",
          "CSAFPID-0008",
          "CSAFPID-0010",
          "CSAFPID-0012",
          "CSAFPID-0014",
          "CSAFPID-0016",
          "CSAFPID-0018"
        ]
      },
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "CSAFPID-0018"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "CSAFPID-0002",
            "CSAFPID-0010"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.3.5617 or later version",
          "product_ids": [
            "CSAFPID-0008",
            "CSAFPID-0016"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.3.5618 or later version",
          "product_ids": [
            "CSAFPID-0006",
            "CSAFPID-0014"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to MP8 SR4 or later version",
          "product_ids": [
            "CSAFPID-0012"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to IP8 SR4 or later version",
          "product_ids": [
            "CSAFPID-0004"
          ]
        }
      ],
      "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-0004",
            "CSAFPID-0006",
            "CSAFPID-0008",
            "CSAFPID-0012",
            "CSAFPID-0014",
            "CSAFPID-0016"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0002"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0010"
          ]
        },
        {
          "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",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0018"
          ]
        }
      ],
      "title": "CVE-2024-22041"
    }
  ]
}


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