FKIE_CVE-2020-15704

Vulnerability from fkie_nvd - Published: 2020-09-01 00:15 - Updated: 2026-06-17 02:57
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.
References
security@ubuntu.comhttps://ubuntu.com/security/notices/USN-4451-1Vendor Advisory
security@ubuntu.comhttps://ubuntu.com/security/notices/USN-4451-2Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/notices/USN-4451-1Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/notices/USN-4451-2Vendor Advisory
Impacted products
Vendor Product Version
canonical ppp *
canonical ubuntu_linux 16.04
canonical ppp *
canonical ubuntu_linux 18.04
canonical ppp *
canonical ubuntu_linux 20.04
canonical ppp *
canonical ubuntu_linux 12.04
canonical ppp *
canonical ubuntu_linux 14.04
To clipboard 

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          "vendor": "Canonical",
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    }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504."
    },
    {
      "lang": "es",
      "value": "El proceso hijo modprobe en el archivo de parche ./debian/patches/load_ppp_generic_if_needed manej\u00f3 incorrectamente la carga del m\u00f3dulo.\u0026#xa0;Un atacante local que no sea root podr\u00eda explotar la variable de entorno MODPROBE_OPTIONS para leer archivos root arbitrarios.\u0026#xa0;Corregido en las versiones 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6.\u0026#xa0;Fue ZDI-CAN-11504"
    }
  ],
  "id": "CVE-2020-15704",
  "lastModified": "2026-06-17T02:57:05.137",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "security@ubuntu.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
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          "attackVector": "LOCAL",
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          "confidentialityImpact": "HIGH",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2020-09-01T00:15:09.907",
  "references": [
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      "source": "security@ubuntu.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://ubuntu.com/security/notices/USN-4451-1"
    },
    {
      "source": "security@ubuntu.com",
      "tags": [
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      "url": "https://ubuntu.com/security/notices/USN-4451-2"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://ubuntu.com/security/notices/USN-4451-1"
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://ubuntu.com/security/notices/USN-4451-2"
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  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-200"
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      ],
      "source": "security@ubuntu.com",
      "type": "Secondary"
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    {
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          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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