VDE-2020-050

Vulnerability from csaf_pepperlfuchsse - Published: 2021-02-15 13:33 - Updated: 2025-05-14 13:00
Summary
Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service
Notes
Summary: Critical vulnerability has been discovered in the utilized component 499ES EtherNet/IP Stack by Real Time Automation (RTA).
Impact: Pepperl+Fuchs analyzed and identified affected devices. Remote attackers may exploit the vulnerability sending specially crafted packages that may result in a denial-of-service condition or code execution.
Mitigation: An external protective measure is required. - Minimize network exposure for affected products and ensure that they are not accessible via the Internet. - Isolate affected products from the corporate network. - If remote access is required, use secure methods such as virtual private networks (VPNs).
CVE-2020-25159

499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-121 - Stack-based Buffer Overflow
Mitigation An external protective measure is required. - Minimize network exposure for affected products and ensure that they are not accessible via the Internet. - Isolate affected products from the corporate network. - If remote access is required, use secure methods such as virtual private networks (VPNs).
References
Acknowledgments
CERT@VDE certvde.com
Claroty Sharon Brizinov
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "names": [
          "Sharon Brizinov"
        ],
        "organization": "Claroty",
        "summary": "reporting this vulnerability"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
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        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en-US",
    "notes": [
      {
        "category": "summary",
        "text": "Critical vulnerability has been discovered in the utilized component 499ES EtherNet/IP Stack by Real Time Automation (RTA).",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "Pepperl+Fuchs analyzed and identified affected devices.\nRemote attackers may exploit the vulnerability sending specially crafted packages that may result in a denial-of-service condition or code execution.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "An external protective measure is required.\n\n- Minimize network exposure for affected products and ensure that they are not accessible via the Internet.\n- Isolate affected products from the corporate network.\n- If remote access is required, use secure methods such as virtual private networks (VPNs).",
        "title": "Mitigation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "cert@pepperl-fuchs.com",
      "name": "Pepperl+Fuchs SE",
      "namespace": "https://www.pepperl-fuchs.com"
    },
    "references": [
      {
        "category": "external",
        "summary": "Pepperl+Fuchs advisory overview at CERT@VDE",
        "url": "https://certvde.com/de/advisories/vendor/pepperl+fuchs/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-050: Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2020-050/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-050: Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service - CSAF",
        "url": "https://pepperl-fuchs.csaf-tp.certvde.com/.well-known/csaf/white/2021/vde-2020-050.json"
      }
    ],
    "title": "Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service",
    "tracking": {
      "aliases": [
        "VDE-2020-050"
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      "current_release_date": "2025-05-14T13:00:15.000Z",
      "generator": {
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      "revision_history": [
        {
          "date": "2021-02-15T13:33:00.000Z",
          "number": "1",
          "summary": "Initial revision."
        },
        {
          "date": "2025-04-10T13:00:00.000Z",
          "number": "2",
          "summary": "Fixed URLs."
        },
        {
          "date": "2025-05-14T13:00:15.000Z",
          "number": "3",
          "summary": "Fix: added distribution"
        }
      ],
      "status": "final",
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    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "IC-KP2-1HB17-2V1D",
                "product": {
                  "name": "IC-KP2-1HB17-2V1D",
                  "product_id": "CSAFPID-11001"
                }
              },
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              {
                "category": "product_name",
                "name": "IC-KP-B17-AIDA1",
                "product": {
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                "name": "\u003c=18-31766H",
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                }
              },
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                "name": "\u003c=18-31440H",
                "product": {
                  "name": "Firmware \u003c=18-31440H",
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                }
              },
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                "category": "product_version_range",
                "name": "\u003c=18-31785F",
                "product": {
                  "name": "Firmware \u003c=18-31785F",
                  "product_id": "CSAFPID-21003"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "Pepperl+Fuchs"
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    "product_groups": [
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        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ],
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      }
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        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
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        "relates_to_product_reference": "CSAFPID-11003"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-25159",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "description",
          "text": "499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "An external protective measure is required.\n\n- Minimize network exposure for affected products and ensure that they are not accessible via the Internet.\n- Isolate affected products from the corporate network.\n- If remote access is required, use secure methods such as virtual private networks (VPNs).",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 9.8,
            "environmentalSeverity": "CRITICAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.8,
            "temporalSeverity": "CRITICAL",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003"
          ]
        }
      ],
      "title": "CVE-2020-25159"
    }
  ]
}


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