GSD-2020-2732

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
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.
Aliases
Aliases
CVE-2020-2732
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{
  "GSD": {
    "alias": "CVE-2020-2732",
    "description": "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.",
    "id": "GSD-2020-2732",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-2732.html",
      "https://www.debian.org/security/2020/dsa-4698",
      "https://www.debian.org/security/2020/dsa-4667",
      "https://access.redhat.com/errata/RHSA-2020:4062",
      "https://access.redhat.com/errata/RHSA-2020:4060",
      "https://access.redhat.com/errata/RHSA-2020:2171",
      "https://access.redhat.com/errata/RHSA-2020:2102",
      "https://ubuntu.com/security/CVE-2020-2732",
      "https://advisories.mageia.org/CVE-2020-2732.html",
      "https://security.archlinux.org/CVE-2020-2732",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-2732.html",
      "https://linux.oracle.com/cve/CVE-2020-2732.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "id": "GSD-2020-2732",
      "modified": "2023-12-13T01:21:50.500721Z",
      "schema_version": "1.4.0"
    }
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          }
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            }
          ]
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 2.3,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:A/AC:M/Au:S/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 4.4,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 4.0
        }
      },
      "lastModifiedDate": "2020-06-10T20:15Z",
      "publishedDate": "2020-04-08T22:15Z"
    }
  }
}


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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.
  • 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.



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