ICSA-21-173-02
Vulnerability from csaf_cisa
Published
2021-06-22 00:00
Modified
2021-06-22 00:00
Summary
CODESYS V2 web server

Notes

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
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/.
Risk evaluation
Successful exploitation of these vulnerabilities may allow an attacker to read or write arbitrary memory or files in the CODESYS Control runtime system, cause invalid memory accesses to execute code, or crash the CODESYS web server or CODESYS Control runtime system.
Critical infrastructure sectors
Critical Manufacturing
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
Exploitability
No known public exploits specifically target these vulnerabilities.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Vyacheslav Moskvin",
          "Sergey Fedonin",
          "Anton Dorfman"
        ],
        "organization": "Positive Technologies",
        "summary": "reporting these vulnerabilities to CODESYS"
      }
    ],
    "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": "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": "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": "summary",
        "text": "Successful exploitation of these vulnerabilities may allow an attacker to read or write arbitrary memory or files in the CODESYS Control runtime system, cause invalid memory accesses to execute code, or crash the CODESYS web server or CODESYS Control runtime system.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Critical Manufacturing",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Germany",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target these vulnerabilities.",
        "title": "Exploitability"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-173-02 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-173-02.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-21-173-02 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-173-02"
      },
      {
        "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://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "CODESYS V2 web server",
    "tracking": {
      "current_release_date": "2021-06-22T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-21-173-02",
      "initial_release_date": "2021-06-22T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2021-06-22T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-21-173-02 CODESYS V2 web server"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 1.1.9.20",
                "product": {
                  "name": "CODESYS reports all CODESYS V2 web servers running stand-alone or as part of the CODESYS runtime system: prior to Version 1.1.9.20 are affected",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "CODESYS reports all CODESYS V2 web servers running stand-alone or as part of the CODESYS runtime system"
          }
        ],
        "category": "vendor",
        "name": "CODESYS, GmbH"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-30189",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Crafted web server requests may cause a stack-based buffer overflow. This could allow an attacker to execute arbitrary code on the CODESYS web server or trigger a denial-of-service condition due to a crash in the CODESYS web server.CVE-2021-30189 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30189"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-30190",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The user management of the CODESYS v2.3 WebVisu allows user dependent control of access to the visualization pages. However, subordinate requests to read or write values are forwarded to the CODESYS Control runtime system regardless of successful authentication. This enables crafted web server requests to bypass user management and read or write values on the PLC without authentication.CVE-2021-30190 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30190"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-30191",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Crafted web server requests can cause an over-read or over-write of a buffer in the CODESYS web server, which typically leads to a denial-of-service condition.CVE-2021-30191 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30191"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-30192",
      "cwe": {
        "id": "CWE-358",
        "name": "Improperly Implemented Security Check for Standard"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Crafted web server requests can bypass the security checks for boot project-related files on the CODESYS Control runtime system and be uploaded from the CODESYS Control runtime system.CVE-2021-30192 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30192"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-30193",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Crafted web server requests can be utilized to write arbitrary memory in the CODESYS Control runtime system. This could allow an attacker to execute code on the CODESYS Control runtime system or cause a denial-of-service condition due to a crash of the CODESYS Control runtime system.CVE-2021-30193 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30193"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2021-30194",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Crafted web server requests can be utilized to read arbitrary memory in the CODESYS Control runtime system or crash the CODESYS web server.CVE-2021-30194 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-30194"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "CODESYS GmbH has released Version 1.1.9.20 of the CODESYS V2 web server to address these vulnerabilities. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup Version 2.3.9.66",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Please visit the CODESYS update area for more information on how to obtain the software updates.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://www.codesys.com/download"
        },
        {
          "category": "mitigation",
          "details": "Use controllers and devices only in a protected environment to minimize network exposure, ensuring they are not accessible from outside.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use firewalls to protect and separate the control system network from other networks.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use VPN (virtual private network) tunnels if remote access is required.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Activate and apply user management and password features.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Use encrypted communication links.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit access to both development and control system by physical means, operating system features, etc.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Protect both development and control system operations by using up to date virus detecting solutions.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information and general recommendations for protecting machines and plants, see also the CODESYS Security Whitepaper.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/fileadmin/data/customers/security/CODESYS-Security-Whitepaper.pdf"
        },
        {
          "category": "mitigation",
          "details": "Please see CODESYS Advisory 2021-07 for more information.",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14726\u0026token=553da5d11234bbe1ceed59969d419a71bb8c8747\u0026download="
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    }
  ]
}


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