CERTFR-2021-AVI-436

Vulnerability from certfr_avis - Published: - Updated:

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None
Impacted products
Vendor Product Description
Ubuntu Ubuntu Ubuntu 20.10
Ubuntu Ubuntu Ubuntu 18.04 LTS
Ubuntu Ubuntu Ubuntu 20.04 LTS
References

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Ubuntu 20.10",
      "product": {
        "name": "Ubuntu",
        "vendor": {
          "name": "Ubuntu",
          "scada": false
        }
      }
    },
    {
      "description": "Ubuntu 18.04 LTS",
      "product": {
        "name": "Ubuntu",
        "vendor": {
          "name": "Ubuntu",
          "scada": false
        }
      }
    },
    {
      "description": "Ubuntu 20.04 LTS",
      "product": {
        "name": "Ubuntu",
        "vendor": {
          "name": "Ubuntu",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-29264",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-29264"
    },
    {
      "name": "CVE-2020-25672",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-25672"
    },
    {
      "name": "CVE-2021-30002",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-30002"
    },
    {
      "name": "CVE-2021-3483",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3483"
    },
    {
      "name": "CVE-2021-31916",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31916"
    },
    {
      "name": "CVE-2021-29647",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-29647"
    },
    {
      "name": "CVE-2021-28971",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28971"
    },
    {
      "name": "CVE-2021-28952",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28952"
    },
    {
      "name": "CVE-2021-28038",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28038"
    },
    {
      "name": "CVE-2020-25671",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-25671"
    },
    {
      "name": "CVE-2021-28950",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28950"
    },
    {
      "name": "CVE-2021-28688",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28688"
    },
    {
      "name": "CVE-2021-29155",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-29155"
    },
    {
      "name": "CVE-2020-25670",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-25670"
    },
    {
      "name": "CVE-2021-28972",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28972"
    },
    {
      "name": "CVE-2021-28660",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28660"
    },
    {
      "name": "CVE-2021-33200",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33200"
    },
    {
      "name": "CVE-2021-28964",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28964"
    },
    {
      "name": "CVE-2021-33033",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33033"
    },
    {
      "name": "CVE-2021-31829",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-31829"
    },
    {
      "name": "CVE-2021-3501",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3501"
    },
    {
      "name": "CVE-2020-25673",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-25673"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-436",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-06-07T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire"
    },
    {
      "description": "D\u00e9ni de service"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux\nd\u0027Ubuntu. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de\ncode arbitraire, un d\u00e9ni de service et une atteinte \u00e0 la confidentialit\u00e9\ndes donn\u00e9es.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4982-1 du 03 juin 2021",
      "url": "https://ubuntu.com/security/notices/USN-4982-1"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4984-1 du 04 juin 2021",
      "url": "https://ubuntu.com/security/notices/USN-4984-1"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-4983-1 du 03 juin 2021",
      "url": "https://ubuntu.com/security/notices/USN-4983-1"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.