{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Psytester"
        ],
        "summary": "describing the findings and helping to verify the resolving implementation"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "En",
    "notes": [
      {
        "category": "summary",
        "text": "ABB is aware of vulnerabilities in the product versions listed as affected in the advisory. A firmware update is available that resolves these privately reported vulnerabilities in the product versions listed as affected in the advisory.\n\nAn attacker who successfully exploited these vulnerabilities could access sensitive information stored inside the device and can change the configuration of the device . \n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "Recommended security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system. \n\nMore information on recommended practices can be found in the documents listed in the Reference section.\n\n",
        "title": "Mitigating factors"
      },
      {
        "category": "other",
        "text": "For any installation of software-related ABB products and especially for products in scope of the EIBPORT product line, we strongly recommend the following (non-exhaustive) list of cyber security practices:\n\n\u2022\tEnsure that all EIBPORT products are upgraded to the latest firmware version. Please find the latest version of EIBPORT firmware on the respective product homepage.\n\n\u2022\tIsolate special purpose networks (e.g. for automation systems) and remote devices behind firewalls and separate them from any general-purpose network (e.g. office or home networks).\n\n\u2022\tInstall physical controls so no unauthorized personnel can access your devices, components, peripheral equipment, and networks.\n\n\u2022\tNever connect programming software or computers containing programming software to any network other than the network for the devices that it is intended for.\n\n\u2022\tScan all data imported into your environment before use to detect potential malware infections.\n\n\u2022\tMinimize network exposure for all EIBPORT ports and endpoints to ensure that they are not accessible directly from the Internet.\n \n\u2022\tEnsure all nodes are always up to date in terms of installed software, operating system, and firmware patches as well as anti-virus and firewall.\n\n\u2022\tWhen remote access is required, use secure methods, such as Virtual Private Networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available.\n\n\u2022\tAuthorized users shall change all default credentials during commissioning of an EIBPORT system. If credentials have not been changed during commission state, ABB advises to change each changeable credential at the earliest.\n\nMore information on recommended practices can be found in the documents listed in the Reference section.\n",
        "title": "General security recommendations"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information in this document is subject to change without notice, and should not be construed as a commitment by ABB.\n\nABB provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall ABB or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if ABB or its suppliers have been advised of the possibility of such damages.\n\nThis document and parts hereof must not be reproduced or copied without written permission from ABB, and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose.\n\nAll rights to registrations and trademarks reside with their respective owners.",
        "title": "Notice"
      },
      {
        "category": "other",
        "text": "For additional instructions and support please contact your local ABB service organization. For contact information, see www.abb.com/contactcenters.\n\nInformation about ABB\u2019s cyber security program and capabilities can be found at www.abb.com/cybersecurity.",
        "title": "Support"
      },
      {
        "category": "other",
        "text": "ABB has a rigorous internal cyber security continuous improvement process which involves regular testing with industry leading tools and periodic assessments to identify potential product issues. Occasionally an issue is determined to be a design or coding flaw with implications that may impact product cyber security. \n\nWhen a potential product vulnerability is identified or reported, ABB immediately initiates our vulnerability handling process. This entails validating if the issue is in fact a product issue, identifying root causes, determining what related products may be impacted, developing a remediation, and notifying end users and governmental organizations. \n\nThe resulting Cyber Security Advisory intends to notify customers of the vulnerability and provide details on which products are impacted, how to mitigate the vulnerability or explain workarounds that minimize the potential risk as much as possible. The release of a Cyber Security Advisory should not be misconstrued as an affirmation or indication of an active threat or ongoing campaign targeting the products mentioned here. If ABB is aware of any specific threats, it will be clearly mentioned in the communication. \n\nThe publication of this Cyber Security Advisory is an example of ABB\u2019s commitment to the user community in support of this critical topic. Responsible disclosure is an important element in the chain of trust we work to maintain with our many customers. The release of an Advisory provides timely information which is essential to help ensure our customers are fully informed. ",
        "title": "Purpose"
      },
      {
        "category": "faq",
        "text": "What causes the vulnerability?\n\nThe session management of vulnerable FW versions of EIBPORT, fails to maintain a secure session management. \n\nWhat is EIBPORT?\n\nEIBPORT is a building management system allowing to automate buildings based on the KNX standards.\n\nWhat might an attacker use the vulnerability to do?\n\nAn attacker who successfully exploited these vulnerabilities can gain access to the EIBPORT device without authenticating her-, himself.\n\nCould the vulnerability be exploited remotely? \n\nNo, recommended practices include that building automation control systems are physically protected, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed. Following these best practices, an attacker cannot exploit the vulnerability remotely. Unfortunately, ABB became aware that some customers have commissioned EIBPORT not according to these best practices but have made the IP address to the device accessible over the Internet or other untrusted networks. ABB emphasizes that this configuration is against the intended use of the system. \n\nCan functional safety be affected by an exploit of this vulnerability?\n\nNo. EIBPORT is not designed as a functional safety device. \n\nWhat does the update do?\n\nThe update removes the vulnerabilities by modifying the way that the device firmware verifies login credentials and token or session identifiers. Furthermore, it hardens the product configuration wherever possible. \n\nWhen this security advisory was issued, had this vulnerability been publicly disclosed?\n\nNo, ABB had not received any information indicating that this vulnerability had been exploited when this security advisory was originally issued.\n\nWhen this security advisory was issued, had ABB received any reports that this vulnerability was being exploited?\n\nNo, ABB had not received any information indicating that this vulnerability had been exploited when this security advisory was originally issued.\n",
        "title": "Frequently asked questions"
      }
    ],
    "publisher": {
      "category": "vendor",
      "name": "ABB PSIRT",
      "namespace": "https://global.abb/group/en/technology/cyber-security/alerts-and-notifications"
    },
    "references": [
      {
        "summary": "Supplier of Firmware",
        "url": "https://bab-technologie.com/"
      },
      {
        "summary": "Hardening guide for EIBPORT",
        "url": "https://bab-tec.de/itsecurity"
      },
      {
        "summary": "System Manual 1",
        "url": "https://library.e.abb.com/public/5e1a1868450b44b7c1256f160031da4e/0909_eibPort_12_03_GB.pdf"
      },
      {
        "summary": "System Manual 2",
        "url": "https://library.e.abb.com/public/5899790b64c28d08c1257ae8003a262b/9637_1_eibPort_ABB_versi%C3%B3n3_Documentaci%C3%B3n_EN.pdf"
      },
      {
        "summary": "ABB Hardening guide for general EIB and other products",
        "url": "https://www.busch-jaeger.de/media/download/Broschueren/en/ABB_Smart_Home_Security_2017.pdf"
      },
      {
        "category": "self",
        "summary": "ABB CYBERSECURITY ADVISORY - PDF version",
        "url": "https://search.abb.com/library/Download.aspx?DocumentID=9AKK108471A7808\u0026LanguageCode=en\u0026DocumentPartId=pdf\u0026Action=Launch"
      },
      {
        "category": "self",
        "summary": "ABB CYBERSECURITY ADVISORY - CSAF version",
        "url": "https://psirt.abb.com/csaf/2025/9akk108471a7808.json"
      }
    ],
    "title": "EIBPORT Reflected XSS",
    "tracking": {
      "current_release_date": "2025-10-07T00:30:00.000Z",
      "generator": {
        "date": "2025-10-07T08:50:52.884Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.36"
        }
      },
      "id": "9AKK108471A7808",
      "initial_release_date": "2025-10-07T00:30:00.000Z",
      "revision_history": [
        {
          "date": "2025-10-07T00:30:00.000Z",
          "legacy_version": "A",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c3.9.2",
                "product": {
                  "name": "EIBPORT V3 KNX (2CLA963710W1001) Version \u003c3.9.2",
                  "product_id": "2CLA963710W1001"
                }
              },
              {
                "category": "product_version",
                "name": "3.9.2",
                "product": {
                  "name": "EIBPORT V3 KNX Version 3.9.2",
                  "product_id": "FX1"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c3.9.2",
                "product": {
                  "name": "EIBPORT V3 KNX (2CSM256242R2001) Version \u003c3.9.2",
                  "product_id": "2CSM256242R2001"
                }
              }
            ],
            "category": "product_name",
            "name": "EIBPORT V3 KNX"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c3.9.2",
                "product": {
                  "name": "EIBPORT V3 KNX GSM (2CLA963720W1001) version \u003c 3.9.2",
                  "product_id": "2CLA963720W1001 "
                }
              },
              {
                "category": "product_version",
                "name": "3.9.2",
                "product": {
                  "name": "EIBPORT V3 KNX GSM version 3.9.2",
                  "product_id": "FX2"
                }
              }
            ],
            "category": "product_name",
            "name": "EIBPORT V3 KNX GSM"
          }
        ],
        "category": "vendor",
        "name": "ABB"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-22291",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "notes": [
        {
          "category": "description",
          "text": "The vulnerability allows the successful attacker to receive a copy of the session id.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "FX1",
          "FX2"
        ],
        "known_affected": [
          "2CLA963710W1001",
          "2CSM256242R2001",
          "2CLA963720W1001 "
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "NVD-CVE-2021-22291",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22291"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "ABB recommends that customers apply the update at the earliest convenience.",
          "product_ids": [
            "2CLA963710W1001",
            "2CSM256242R2001",
            "2CLA963720W1001 "
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8,
            "temporalSeverity": "HIGH",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "2CLA963710W1001",
            "2CSM256242R2001",
            "2CLA963720W1001 "
          ]
        }
      ],
      "title": "CVE-2021-22291"
    }
  ]
}