FKIE_CVE-2020-27352

Vulnerability from fkie_nvd - Published: 2024-06-21 20:15 - Updated: 2025-08-26 17:20
Severity ?
9.3 (Critical) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended.
References
security@ubuntu.comhttps://bugs.launchpad.net/snapd/+bug/1910456Exploit, Issue Tracking
security@ubuntu.comhttps://ubuntu.com/security/notices/USN-4728-1Vendor Advisory
security@ubuntu.comhttps://www.cve.org/CVERecord?id=CVE-2020-27352Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.launchpad.net/snapd/+bug/1910456Exploit, Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/notices/USN-4728-1Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.cve.org/CVERecord?id=CVE-2020-27352Third Party Advisory
Impacted products
Vendor Product Version
canonical snapd *
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
canonical ubuntu_linux 20.10
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "BC75BCAC-E8EB-4E75-AFAE-A66E88CF2590",
              "versionEndExcluding": "2.48.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
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              "vulnerable": true
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended."
    },
    {
      "lang": "es",
      "value": "Al generar las unidades de servicio systemd para el complemento de Docker (y otros complementos similares), snapd no especifica Delegate=yes; como resultado, systemd mover\u00e1 los procesos de los contenedores creados y administrados por estos complementos al grupo c del daemon principal dentro del se rompe al recargar las unidades del sistema. Esto puede otorgar privilegios adicionales a un contenedor dentro del complemento que no estaban previstos originalmente."
    }
  ],
  "id": "CVE-2020-27352",
  "lastModified": "2025-08-26T17:20:35.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 6.0,
        "source": "security@ubuntu.com",
        "type": "Secondary"
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          "attackVector": "LOCAL",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  },
  "published": "2024-06-21T20:15:10.630",
  "references": [
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      "source": "security@ubuntu.com",
      "tags": [
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    },
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      "tags": [
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    {
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://www.cve.org/CVERecord?id=CVE-2020-27352"
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  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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