CVE-2019-3887 (GCVE-0-2019-3887)

Vulnerability from cvelistv5 – Published: 2019-04-09 00:00 – Updated: 2024-08-04 19:19
VLAI?
Summary
A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.
Severity ?
6.7 (Medium)
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
The Linux Foundation Kernel Affected: from 4.16
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En este caso, el invitado L1 podr\u00eda acceder a los valores de registro APIC de L0 a trav\u00e9s del invitado L2, cuando `virtualize x2APIC mode\u0027 est\u00e1 habilitado. Un invitado podr\u00eda utilizar este fallo para bloquear el n\u00facleo del host, lo que provocar\u00eda un problema de denegaci\u00f3n de servicio. 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  }
}


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Tags
Taxonomy of the tags.




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

Author Source Type Date Other

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.
  • 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.