icsa-14-086-01a
Vulnerability from csaf_cisa
Published
2014-12-28 07:00
Modified
2025-06-25 22:09
Summary
Schneider Electric Serial Modbus Driver Buffer Overflow (Update A)

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-14-086-01A JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2014/icsa-14-086-01a.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-14-086-01A - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-14-086-01a"
      },
      {
        "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": "Schneider Electric Serial Modbus Driver Buffer Overflow (Update A)",
    "tracking": {
      "current_release_date": "2025-06-25T22:09:32.885385Z",
      "generator": {
        "date": "2025-06-25T22:09:32.885356Z",
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-14-086-01A",
      "initial_release_date": "2014-12-28T07:00:00.000000Z",
      "revision_history": [
        {
          "date": "2014-12-28T07:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        },
        {
          "date": "2025-06-25T22:09:32.885385Z",
          "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=2.31.04",
                "product": {
                  "name": "Schneider Electric TwidoSuite: \u003c=2.31.04",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "TwidoSuite"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=2.6",
                "product": {
                  "name": "Schneider Electric PowerSuite: \u003c=2.6",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "PowerSuite"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=1.7",
                "product": {
                  "name": "Schneider Electric SoMove: \u003c=1.7",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "SoMove"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "2.0|3.0|3.1|3.0",
                "product": {
                  "name": "Schneider Electric SoMachine: 2.0|3.0|3.1|3.0",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "SoMachine"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=7.0",
                "product": {
                  "name": "Schneider Electric Unity Pro: \u003c=7.0",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "Unity Pro"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=2.3",
                "product": {
                  "name": "Schneider Electric UnityLoader: \u003c=2.3",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "UnityLoader"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=2.6_SR7",
                "product": {
                  "name": "Schneider Electric Concept: \u003c=2.6_SR7",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "Concept"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=2.1.2",
                "product": {
                  "name": "Schneider Electric ModbusCommDTM sl: \u003c=2.1.2",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "ModbusCommDTM sl"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=4.5_SP5",
                "product": {
                  "name": "Schneider Electric PL7: \u003c=4.5_SP5",
                  "product_id": "CSAFPID-0009"
                }
              }
            ],
            "category": "product_name",
            "name": "PL7"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "14",
                "product": {
                  "name": "Schneider Electric SFT2841: 14",
                  "product_id": "CSAFPID-0010"
                }
              }
            ],
            "category": "product_name",
            "name": "SFT2841"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=13.1",
                "product": {
                  "name": "Schneider Electric SFT2841: \u003c=13.1",
                  "product_id": "CSAFPID-0011"
                }
              }
            ],
            "category": "product_name",
            "name": "SFT2841"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=3.40",
                "product": {
                  "name": "Schneider Electric OPC Factory Server (OFS): \u003c=3.40",
                  "product_id": "CSAFPID-0012"
                }
              }
            ],
            "category": "product_name",
            "name": "OPC Factory Server (OFS)"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "V1.10_IE_v37",
                "product": {
                  "name": "Schneider Electric Modbus Serial Driver Windows XP 32 bit: V1.10_IE_v37",
                  "product_id": "CSAFPID-0013"
                }
              }
            ],
            "category": "product_name",
            "name": "Modbus Serial Driver Windows XP 32 bit"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "V2.2_IE12",
                "product": {
                  "name": "Schneider Electric Modbus Serial Driver Windows Vista 32 bit: V2.2_IE12",
                  "product_id": "CSAFPID-0014"
                }
              }
            ],
            "category": "product_name",
            "name": "Modbus Serial Driver Windows Vista 32 bit"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "V2.2_IE12",
                "product": {
                  "name": "Schneider Electric Modbus Serial Driver Windows 7 32 bit: V2.2_IE12",
                  "product_id": "CSAFPID-0015"
                }
              }
            ],
            "category": "product_name",
            "name": "Modbus Serial Driver Windows 7 32 bit"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "V3.2_IE12",
                "product": {
                  "name": "Schneider Electric Modbus Serial Driver Windows 7 64 bit: V3.2_IE12",
                  "product_id": "CSAFPID-0016"
                }
              }
            ],
            "category": "product_name",
            "name": "Modbus Serial Driver Windows 7 64 bit"
          }
        ],
        "category": "vendor",
        "name": "Schneider Electric"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2013-0662",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Multiple stack-based buffer overflows in ModbusDrv.exe in Schneider Electric Modbus Serial Driver 1.10 through 3.2 allow remote attackers to execute arbitrary code via a large buffer-size value in a Modbus Application Header.",
          "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",
          "CSAFPID-0012",
          "CSAFPID-0013",
          "CSAFPID-0014",
          "CSAFPID-0015",
          "CSAFPID-0016"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Schneider Electric has released a security notification with further information on this vulnerability and how to mitigate it: (http://download.schneider-electric.com/files?p_Doc_Ref=SEVD 2013-070-01).",
          "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"
          ]
        },
        {
          "category": "mitigation",
          "details": "Schneider Electric recommends that products that use this driver be updated with the latest version of software.",
          "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"
          ]
        },
        {
          "category": "mitigation",
          "details": "New versions of OFS V3.5 and Unity Pro V8 include the updated ModbusDriverSuite.",
          "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"
          ]
        },
        {
          "category": "mitigation",
          "details": "For the other products listed above, the updated ModbusDriverSuite will be implemented with each new version of those software products. Asset owners concerned about the Modbus Serial Driver used for those applications, please contact Schneider Electric Technical Support at: (http://www2.schneider-electric.com/sites/corporate/en/products-services/services/field-services/services-by-business-activity/automation/lifecycle/technical-support.page).",
          "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"
          ],
          "url": "http://www2.schneider-electric.com/sites/corporate/en/products-services/services/field-services/services-by-business-activity/automation/lifecycle/technical-support.page"
        },
        {
          "category": "mitigation",
          "details": "Until this software can be updated in the vulnerable devices, Schneider Electric recommends a defense-in-depth strategy, which includes locating the PLCs and devices running the vulnerable software behind firewalls configured to limit access to authorized personnel and protocols.",
          "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"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "baseScore": 9.3,
            "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "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"
          ]
        }
      ]
    }
  ]
}


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