FKIE_CVE-2021-45099

Vulnerability from fkie_nvd - Published: 2021-12-16 05:15 - Updated: 2026-06-17 04:13
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH & Web Terminal) before 10.0.0 has an attack surface that requires social engineering. NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations
References
cve@mitre.orghttps://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67Exploit, Third Party Advisory
cve@mitre.orghttps://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0Release Notes, Third Party Advisory
Impacted products
Vendor Product Version
ssh_\&_web_terminal_project ssh_\&_web_terminal *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ssh_\\\u0026_web_terminal_project:ssh_\\\u0026_web_terminal:*:*:*:*:*:home_assistant:*:*",
              "matchCriteriaId": "941981EB-98E8-4476-A224-862996F5B71E",
              "versionEndExcluding": "10.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [
    {
      "sourceIdentifier": "cve@mitre.org",
      "tags": [
        "disputed"
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH \u0026 Web Terminal) before 10.0.0 has an attack surface that requires social engineering. NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations"
    },
    {
      "lang": "es",
      "value": "**EN DISPUTA** El servicio addon.stdin en addon-ssh (tambi\u00e9n se conoce como Home Assistant Community Add-on: SSH \u0026amp; Web Terminal) versiones anteriores a 10.0.0, presenta una superficie de ataque que requiere ingenier\u00eda social. NOTA: el proveedor no est\u00e1 de acuerdo en que esto sea una vulnerabilidad; sin embargo, addon.stdin fue eliminado como una medida de defensa en profundidad contra situaciones complejas de ingenier\u00eda social"
    }
  ],
  "id": "CVE-2021-45099",
  "lastModified": "2026-06-17T04:13:10.353",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-45099",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-07-18T15:25:05.013266Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-12-16T05:15:08.777",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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