CERTFR-2020-AVI-447

Vulnerability from certfr_avis - Published: 2020-07-17 - Updated: 2020-07-17

Une vulnérabilité a été découverte dans Xen. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité.

Solution

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

Toute machine virtuelle basée sur un noyau linux 5.5 x86 ou supérieur, déployée en mode para-virtualisation (PV) sur un hôte Xen ne disposant pas du dernier correctif de sécurité.

 

Impacted products
Vendor Product Description
References

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [],
  "affected_systems_content": "\u003cp\u003eToute machine virtuelle bas\u00e9e sur un noyau linux 5.5 x86 ou sup\u00e9rieur, d\u00e9ploy\u00e9e en mode para-virtualisation (PV) sur un h\u00f4te Xen ne disposant pas du dernier correctif de s\u00e9curit\u00e9.\u003c/p\u003e \u003cp\u003e\u0026nbsp;\u003c/p\u003e ",
  "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": [],
  "initial_release_date": "2020-07-17T00:00:00",
  "last_revision_date": "2020-07-17T00:00:00",
  "links": [],
  "reference": "CERTFR-2020-AVI-447",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2020-07-17T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Xen. Elle permet \u00e0 un attaquant\nde provoquer un contournement de la politique de s\u00e9curit\u00e9.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Xen",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Xen XSA-329 du 16 juillet 2020",
      "url": "https://xenbits.xen.org/xsa/advisory-329.html"
    }
  ]
}


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Sightings

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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.