CVE-2020-2732 (GCVE-0-2020-2732)

Vulnerability from cvelistv5 – Published: 2020-04-08 21:10 – Updated: 2024-09-30 15:47
VLAI
Summary
A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.
Severity
5.8 (Medium)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise Linux server. Successful attacks of this vulnerability can result in authorized ability to cause a hang or frequently repeatable crash (complete DOS) of Linux Server.
Assigner
References
Impacted products
Vendor Product Version
Oracle Corporation Oracle Linux Affected: 7
Affected: 6
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T12:04:27+00:00",
      "cve": "CVE-2020-2732",
      "id": "CVE-2020-2732",
      "initial_release_date": "2020-02-24T18:00:00+00:00",
      "product_status:fixed": "354",
      "product_status:known_not_affected": "43",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-2732.json",
      "version": "3"
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  }
}



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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.