{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "audience": "all",
        "category": "summary",
        "text": "SICK received a report that informed SICK about an Inadequate Encryption Strength vulnerability in the SICK product \u201cSICK Visionary-S CX\u201d concerning the internal SSH interface solely used by SICK for recovering returned devices.\n\nCurrently SICK is not aware of any public exploits specifically targeting this vulnerability."
      },
      {
        "audience": "all",
        "category": "details",
        "text": "The vulnerability is not visible in any supported customer functionality. Thus customers can only\nidentify products by firmware version. Accessing the device via SSH now shows OpenSSH instead of\ndropbear."
      },
      {
        "category": "general",
        "text": "As general security measures, SICK recommends to minimize network exposure of the devices, restrict network access and follow recommended security practices in order to run the devices in a protected IT environment.",
        "title": "General Security Measures"
      },
      {
        "category": "general",
        "text": "SICK performs vulnerability classification by using the CVSS scoring system (*CVSS v3.1*). The environmental score is dependent on the customer\u2019s environment and can affect the overall CVSS score. SICK recommends that customers individually evaluate the environmental score to achieve final scoring.",
        "title": "Vulnerability Classification"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@sick.de",
      "issuing_authority": "SICK PSIRT is responsible for any vulnerabilities related to SICK products.",
      "name": "SICK PSIRT",
      "namespace": "https://sick.com/psirt"
    },
    "references": [
      {
        "summary": "SICK PSIRT Security Advisories",
        "url": "https://sick.com/psirt"
      },
      {
        "summary": "SICK Operating Guidelines",
        "url": "https://cdn.sick.com/media/docs/1/11/411/Special_information_CYBERSECURITY_BY_SICK_en_IM0084411.PDF"
      },
      {
        "summary": "ICS-CERT recommended practices on Industrial Security",
        "url": "http://ics-cert.us-cert.gov/content/recommended-practices"
      },
      {
        "summary": "CVSS v3.1 Calculator",
        "url": "https://www.first.org/cvss/calculator/3.1"
      },
      {
        "summary": "BSI Technical Guideline for the use of the cryptographic protocol Secure Shell (SSH)",
        "url": "https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/TechGuidelines/TG02102/BSI-TR-02102-4.pdf"
      },
      {
        "category": "self",
        "summary": "The canonical URL.",
        "url": "https://www.sick.com/.well-known/csaf/white/2021/sca-2021-0001.json"
      }
    ],
    "title": "Inadequate SSH configuration in SICK Visionary-S CX",
    "tracking": {
      "current_release_date": "2021-06-25T10:00:00.000Z",
      "generator": {
        "date": "2023-02-09T15:17:22.721Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.0.0"
        }
      },
      "id": "SCA-2021-0001",
      "initial_release_date": "2021-06-25T10:00:00.000Z",
      "revision_history": [
        {
          "date": "2021-06-26T10:00:00.000Z",
          "number": "1",
          "summary": "Initial Release"
        },
        {
          "date": "2023-02-09T11:00:00.000Z",
          "number": "2",
          "summary": "Updated Advisory (only visual changes)"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SICK Visionary-S CX all versions",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Visionary-S CX"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c5.21.2.29154R",
                "product": {
                  "name": "SICK Visionary-S CX Firmware \u003c5.21.2.29154R",
                  "product_id": "CSAFPID-0002"
                }
              },
              {
                "category": "product_version",
                "name": "5.21.2.29154R",
                "product": {
                  "name": "SICK Visionary-S CX Firmware 5.21.2.29154R",
                  "product_id": "CSAFPID-0003"
                }
              }
            ],
            "category": "product_name",
            "name": "Visionary-S CX Firmware"
          }
        ],
        "category": "vendor",
        "name": "SICK AG"
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "SICK Visionary-S CX with Firmware \u003c5.21.2.29154R",
          "product_id": "CSAFPID-0004"
        },
        "product_reference": "CSAFPID-0002",
        "relates_to_product_reference": "CSAFPID-0001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "SICK Visionary-S CX with Firmware 5.21.2.29154R",
          "product_id": "CSAFPID-0005"
        },
        "product_reference": "CSAFPID-0003",
        "relates_to_product_reference": "CSAFPID-0001"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-32496",
      "cwe": {
        "id": "CWE-326",
        "name": "Inadequate Encryption Strength"
      },
      "notes": [
        {
          "category": "description",
          "text": "The use of weak algorithms makes it easier for an attacker to break the security that protects information transmitted from the client to the SSH server, assuming the attacker has access to the network on which the device is connected. This can increase the risk that encryption will be compromised, leading to the exposure of sensitive user information and man-in-the-middle attacks.\nSICK has developed a hotfix. In released firmware versions greater than 5.21.2.29154 the SSH server will no longer offer these weak ciphers."
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0005"
        ],
        "known_affected": [
          "CSAFPID-0004"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to version 5.21.2.29154R or higher",
          "product_ids": [
            "CSAFPID-0004"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0004"
          ]
        }
      ]
    }
  ]
}