FKIE_CVE-2020-24046

Vulnerability from fkie_nvd - Published: 2020-09-17 17:15 - Updated: 2024-11-21 05:14
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restricted shell, allowing execution of a small number of tools of the operating system. This restricted shell can be bypassed after changing the properties of the user admin in the operating system file /etc/passwd. This file cannot be accessed though the restricted shell, but it can be modified by abusing the Backup/Import Backup functionality of the web interface. An authenticated attacker would be able to obtain the file /var/tmp/admin.passwd after executing a Backup operation. This file can be manually modified to change the GUID of the user to 0 (root) and change the restricted shell to a normal shell /bin/sh. After the modification is done, the file can be recompressed to a .tar.bz file and imported again via the Import Backup functionality. The properties of the admin user will be overwritten and a root shell will be granted to the user upon the next successful login.
References
cve@mitre.orghttps://github.com/felmoltorThird Party Advisory
cve@mitre.orghttps://sensepost.com/blog/2020/clash-of-the-spamtitan/Exploit, Third Party Advisory
cve@mitre.orghttps://twitter.com/felmoltorThird Party Advisory
cve@mitre.orghttps://www.titanhq.comVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/felmoltorThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sensepost.com/blog/2020/clash-of-the-spamtitan/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://twitter.com/felmoltorThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.titanhq.comVendor Advisory
Impacted products
Vendor Product Version
titanhq spamtitan 7.07
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:titanhq:spamtitan:7.07:*:*:*:*:*:*:*",
              "matchCriteriaId": "237E0708-6807-472F-A18C-E72871D7C74D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restricted shell, allowing execution of a small number of tools of the operating system. This restricted shell can be bypassed after changing the properties of the user admin in the operating system file /etc/passwd. This file cannot be accessed though the restricted shell, but it can be modified by abusing the Backup/Import Backup functionality of the web interface. An authenticated attacker would be able to obtain the file /var/tmp/admin.passwd after executing a Backup operation. This file can be manually modified to change the GUID of the user to 0 (root) and change the restricted shell to a normal shell /bin/sh. After the modification is done, the file can be recompressed to a .tar.bz file and imported again via the Import Backup functionality. The properties of the admin user will be overwritten and a root shell will be granted to the user upon the next successful login."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema de escape del sandbox en TitanHQ SpamTitan Gateway versi\u00f3n 7.07.\u0026#xa0;Limita al usuario administrador a un shell restringido, permitiendo una ejecuci\u00f3n de un peque\u00f1o n\u00famero de herramientas del sistema operativo.\u0026#xa0;Este shell restringido puede ser omitido despu\u00e9s de cambiar las propiedades del administrador del usuario en el archivo del sistema operativo /etc/passwd.\u0026#xa0;Este archivo no puede ser accedido por medio del shell restringido, pero puede ser modificado al abusar de la funcionalidad Backup/Import Backup de la interfaz web.\u0026#xa0;Un atacante autenticado podr\u00eda ser capaz de obtener el archivo /var/tmp/admin.passwd despu\u00e9s de ejecutar una operaci\u00f3n Backup.\u0026#xa0;Este archivo puede ser manualmente modificado para cambiar el GUID del usuario a 0 (root) y cambiar el shell restringido a un shell /bin/sh normal.\u0026#xa0;Despu\u00e9s de realizada la modificaci\u00f3n, el archivo puede ser comprimir nuevamente a .tar.\u0026#xa0;bz e importado de nuevo mediante la funcionalidad Import Backup.\u0026#xa0;Las propiedades del usuario administrador se sobrescribir\u00e1n y se le otorgar\u00e1 un shell ra\u00edz al usuario en el pr\u00f3ximo inicio de sesi\u00f3n exitoso"
    }
  ],
  "id": "CVE-2020-24046",
  "lastModified": "2024-11-21T05:14:21.313",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-09-17T17:15:16.100",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/felmoltor"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://sensepost.com/blog/2020/clash-of-the-spamtitan/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://twitter.com/felmoltor"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.titanhq.com"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/felmoltor"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://sensepost.com/blog/2020/clash-of-the-spamtitan/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://twitter.com/felmoltor"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.titanhq.com"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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