{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Reid Wightman"
        ],
        "organization": "Dragos, Inc",
        "summary": "reporting this vulnerability to Digi International"
      }
    ],
    "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": "summary",
        "text": "Successful exploitation of this vulnerability could allow the attacker to access connected equipment.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Multiple Sectors",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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/ics. 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/ics 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": "No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.",
        "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-23-243-04 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-243-04.json"
      },
      {
        "category": "self",
        "summary": "ICSA Advisory ICSA-23-243-04 - Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-243-04"
      },
      {
        "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/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "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://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/uscert/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "Digi RealPort Protocol",
    "tracking": {
      "current_release_date": "2023-08-31T06:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-243-04",
      "initial_release_date": "2023-08-31T06:00:00.000000Z",
      "revision_history": [
        {
          "date": "2023-08-31T06:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "Initial Publication"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c= 4.8.488.0",
                "product": {
                  "name": "Digi RealPort for Windows: \u003c= 4.8.488.0",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi RealPort for Windows"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c= 1.9-40",
                "product": {
                  "name": "Digi RealPort for Linux: \u003c= 1.9-40",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi RealPort for Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 2.26.2.4",
                "product": {
                  "name": "Digi ConnectPort TS 8/16: \u003c 2.26.2.4",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi ConnectPort TS 8/16"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi Passport Console Server: *",
                  "product_id": "CSAFPID-0004"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi Passport Console Server"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 1.4.9",
                "product": {
                  "name": "Digi ConnectPort LTS 8/16/32: \u003c 1.4.9",
                  "product_id": "CSAFPID-0005"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi ConnectPort LTS 8/16/32"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi CM Console Server: *",
                  "product_id": "CSAFPID-0006"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi CM Console Server"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi PortServer TS: *",
                  "product_id": "CSAFPID-0007"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi PortServer TS"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi PortServer TS MEI: *",
                  "product_id": "CSAFPID-0008"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi PortServer TS MEI"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi PortServer TS MEI Hardened: *",
                  "product_id": "CSAFPID-0009"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi PortServer TS MEI Hardened"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi PortServer TS M MEI: *",
                  "product_id": "CSAFPID-0010"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi PortServer TS M MEI"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi PortServer TS P MEI: *",
                  "product_id": "CSAFPID-0011"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi PortServer TS P MEI"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi One IAP Family: *",
                  "product_id": "CSAFPID-0012"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi One IAP Family"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi One IA: *",
                  "product_id": "CSAFPID-0013"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi One IA"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi One SP IA: *",
                  "product_id": "CSAFPID-0014"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi One SP IA"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi One SP: *",
                  "product_id": "CSAFPID-0015"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi One SP"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi WR31: *",
                  "product_id": "CSAFPID-0016"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi WR31"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi WR11 XT: *",
                  "product_id": "CSAFPID-0017"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi WR11 XT"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi WR44 R: *",
                  "product_id": "CSAFPID-0018"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi WR44 R"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi WR21: *",
                  "product_id": "CSAFPID-0019"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi WR21"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c 2.26.2.4",
                "product": {
                  "name": "Digi Connect ES: \u003c 2.26.2.4",
                  "product_id": "CSAFPID-0020"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi Connect ES"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi Connect SP: *",
                  "product_id": "CSAFPID-0021"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi Connect SP"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi 6350-SR: *",
                  "product_id": "CSAFPID-0022"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi 6350-SR"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Digi ConnectCore 8X products: *",
                  "product_id": "CSAFPID-0023"
                }
              }
            ],
            "category": "product_name",
            "name": "Digi ConnectCore 8X products"
          }
        ],
        "category": "vendor",
        "name": "Digi International, Inc. "
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-4299",
      "cwe": {
        "id": "CWE-836",
        "name": "Use of Password Hash Instead of Password for Authentication"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.",
          "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",
          "CSAFPID-0017",
          "CSAFPID-0018",
          "CSAFPID-0019",
          "CSAFPID-0020",
          "CSAFPID-0021"
        ],
        "known_not_affected": [
          "CSAFPID-0022",
          "CSAFPID-0023"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-4299"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Digi International recommends users acquire and install patches that they have made available for the following products:",
          "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",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021"
          ]
        },
        {
          "category": "mitigation",
          "details": "Digi RealPort software for Windows: Fixed in 4.10.490",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Digi ConnectPort TS 8/16: Fixed in firmware version 2.26.2.4",
          "product_ids": [
            "CSAFPID-0003"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Digi ConnectPort LTS 8/16/32: Fixed in version 1.4.9",
          "product_ids": [
            "CSAFPID-0005"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Digi Connect ES: Fixed in firmware version 2.26.2.4",
          "product_ids": [
            "CSAFPID-0020"
          ]
        },
        {
          "category": "mitigation",
          "details": "For more information, see the customer notification document published by Digi International.",
          "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",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021"
          ],
          "url": "https://www.digi.com/getattachment/resources/security/alerts/realport-cves/Dragos-Disclosure-Statement.pdf"
        },
        {
          "category": "mitigation",
          "details": "Dragos recommends restricting access to Digi devices on TCP/771 (default) or TCP/1027 (if encryption is enabled, this is the default port). Only allow the workstations which initiate RealPort connections to communicate to the field equipment on those ports. Note that most of Digi\u0027s devices allow you to change the setting for which TCP port the RealPort service runs on, so end users should consult their device configuration and restrict access to the configured port if it is not the default.",
          "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",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021"
          ]
        },
        {
          "category": "mitigation",
          "details": "If using the system in \u0027reverse\u0027 mode, where the Digi device calls back to the Windows or Linux workstation, then Dragos recommends restricting access to the workstation on TCP/771 or TCP/1027 to known Digi RealPort devices on your network. This port may be configured by end users, so consult the workstation and device configurations to ensure coverage.",
          "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",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "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",
            "CSAFPID-0012",
            "CSAFPID-0013",
            "CSAFPID-0014",
            "CSAFPID-0015",
            "CSAFPID-0016",
            "CSAFPID-0017",
            "CSAFPID-0018",
            "CSAFPID-0019",
            "CSAFPID-0020",
            "CSAFPID-0021"
          ]
        }
      ]
    }
  ]
}