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CVE-2024-4163

Status: DeferredHigh (8)—

The Skylab IGX IIoT Gateway allowed users to connect to it via a limited shell terminal (IGX). However, it was discovered that the process was running under root privileges. This allowed the attacker to read, write, and modify any file in the operating system by utilizing the limited shell file exec and download functions. By replacing the /etc/passwd file with a new root user entry, the attacker was able to breakout from the limited shell and login to a unrestricted shell with root access. With the root access, the attacker will be able take full control of the IIoT Gateway.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Skylab — IGX Iiot GatewayAI

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2024-4163",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-4163",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-04-29T16:47:02.223690Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve_disclosure@tech.gov.sg",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.1
      }
    ]
  },
  "affected": [
    {
      "source": "cve_disclosure@tech.gov.sg",
      "affectedData": [
        {
          "vendor": "Skylab",
          "product": "IIoT Gateway (IGX)",
          "versions": [
            {
              "status": "affected",
              "version": "1.2.12"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:skylab:igx_iiot_gateway:-:*:*:*:*:*:*:*"
          ],
          "vendor": "skylab",
          "product": "igx_iiot_gateway",
          "versions": [
            {
              "status": "affected",
              "version": "1.2.12"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-04-26T03:15:06.740",
  "references": [
    {
      "url": "https://govtech-csg.github.io/security-advisories/2024/04/25/CVE-2024-4163.html",
      "source": "cve_disclosure@tech.gov.sg"
    },
    {
      "url": "https://govtech-csg.github.io/security-advisories/2024/04/25/CVE-2024-4163.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Skylab IGX IIoT Gateway allowed users to connect to it via a limited shell terminal (IGX). However, it was discovered that the process was running under root privileges. This allowed the attacker to read, write, and modify any file in the operating system by utilizing the limited shell file exec and download functions. By replacing the /etc/passwd file with a new root user entry, the attacker was able to breakout from the limited shell and login to a unrestricted shell with root access. With the root access, the attacker will be able take full control of the IIoT Gateway."
    },
    {
      "lang": "es",
      "value": "El Skylab IGX IIoT Gateway permitió a los usuarios conectarse a él a través de un terminal shell limitado (IGX). Sin embargo, se descubrió que el proceso se estaba ejecutando con privilegios de root. Esto permitió al atacante leer, escribir y modificar cualquier archivo en el sistema operativo utilizando las funciones limitadas de descarga y ejecución de archivos de shell. Al reemplazar el archivo /etc/passwd con una nueva entrada de usuario root, el atacante pudo salir del shell limitado e iniciar sesión en un shell sin restricciones con acceso root. Con el acceso de root, el atacante podrá tomar el control total de la puerta de enlace IIoT."
    }
  ],
  "lastModified": "2026-06-17T08:01:14.977",
  "sourceIdentifier": "cve_disclosure@tech.gov.sg"
}