ICSA-16-175-03

Vulnerability from csaf_cisa - Published: 2016-03-27 06:00 - Updated: 2025-06-09 17:22
Summary
Meinberg NTP Time Server Vulnerabilities

Notes

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/.
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
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation.
Recommended Practices
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
Recommended Practices
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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 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.
Recommended Practices
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.
Recommended Practices
CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
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{
  "document": {
    "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": "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": "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": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Locate control system networks and remote devices behind firewalls and isolating 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). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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 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.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "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.",
        "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: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-16-175-03 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2016/icsa-16-175-03.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-16-175-03 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-16-175-03"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "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": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
      },
      {
        "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"
      }
    ],
    "title": "Meinberg NTP Time Server Vulnerabilities",
    "tracking": {
      "current_release_date": "2025-06-09T17:22:04.840219Z",
      "generator": {
        "date": "2025-06-09T17:22:04.840099Z",
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-16-175-03",
      "initial_release_date": "2016-03-27T06:00:00.000000Z",
      "revision_history": [
        {
          "date": "2016-03-27T06:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        },
        {
          "date": "2025-06-09T17:22:04.840219Z",
          "legacy_version": "CSAF Conversion",
          "number": "2",
          "summary": "Advisory converted into a CSAF"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg IMS-LANTIME M3000: \u003c=6.0",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "IMS-LANTIME M3000"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg IMS-LANTIME M1000: \u003c=6.0",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "IMS-LANTIME M1000"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg IMS-LANTIME M500: \u003c=6.0",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "IMS-LANTIME M500"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LANTIME M900: \u003c=6.0",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME M900"
          },
          {
            "branches": [
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                "category": "product_version_range",
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                "product": {
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                  "product_id": "CSAFPID-0005"
                }
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            ],
            "category": "product_name",
            "name": "LANTIME M600"
          },
          {
            "branches": [
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                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LANTIME M400: \u003c=6.0",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME M400"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LANTIME M300: \u003c=6.0",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME M300"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LANTIME M200: \u003c=6.0",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME M200"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LANTIME M100: \u003c=6.0",
                  "product_id": "CSAFPID-0009"
                }
              }
            ],
            "category": "product_name",
            "name": "LANTIME M100"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg SyncFire 1100: \u003c=6.0",
                  "product_id": "CSAFPID-0010"
                }
              }
            ],
            "category": "product_name",
            "name": "SyncFire 1100"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.0",
                "product": {
                  "name": "Meinberg LCES: \u003c=6.0",
                  "product_id": "CSAFPID-0011"
                }
              }
            ],
            "category": "product_name",
            "name": "LCES"
          }
        ],
        "category": "vendor",
        "name": "Meinberg"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2016-3962",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Stack-based buffer overflow in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, and LCES devices with firmware before 6.20.004 allows remote attackers to obtain sensitive information, modify data, or cause a denial of service via a crafted parameter in a POST request.",
          "title": "Vulnerability 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"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Meinberg has produced a new firmware Version 6.20.004. The new firmware can be downloaded by using the link below: (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e=)",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ],
          "url": "https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2016-3988",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Multiple stack-based buffer overflows in the NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, and LCES devices with firmware before 6.20.004 allow remote attackers to obtain sensitive information, modify data, or cause a denial of service via a crafted parameter in a POST request.",
          "title": "Vulnerability 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"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Meinberg has produced a new firmware Version 6.20.004. The new firmware can be downloaded by using the link below: (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e=)",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ],
          "url": "https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2016-3989",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The NTP time-server interface on Meinberg IMS-LANTIME M3000, IMS-LANTIME M1000, IMS-LANTIME M500, LANTIME M900, LANTIME M600, LANTIME M400, LANTIME M300, LANTIME M200, LANTIME M100, SyncFire 1100, and LCES devices with firmware before 6.20.004 allows remote authenticated users to obtain root privileges for writing to unspecified scripts, and consequently obtain sensitive information or modify data, by leveraging access to the nobody account.",
          "title": "Vulnerability 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"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Meinberg has produced a new firmware Version 6.20.004. The new firmware can be downloaded by using the link below: (https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e=)",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ],
          "url": "https://urldefense.proofpoint.com/v2/url?u=http-3A__www.meinberg.de_download_firmware_lantime_v6_firmware-2D6.20.004-2Dx86.rel\u0026d=BQIFaQ\u0026c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00\u0026r=zE5lG3CZZIbdBvT6slVAzQ\u0026m=n4ZBSsrF-RphS7eiqohm3WcJ2BYQUCwQUHwVPHNFa6o\u0026s=WlQnlBzw05tnJ1o29nmeXtGBbNubzjyRPqaWAdpXn5Y\u0026e="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002",
            "CSAFPID-0003",
            "CSAFPID-0004",
            "CSAFPID-0005",
            "CSAFPID-0006",
            "CSAFPID-0007",
            "CSAFPID-0008",
            "CSAFPID-0009",
            "CSAFPID-0010",
            "CSAFPID-0011"
          ]
        }
      ]
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.