ghsa-f8pw-77pg-8gv6
Vulnerability from github
Published
2022-02-10 00:01
Modified
2022-04-13 00:01
Details

A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2020-5953"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-02-03T01:15:00Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).",
  "id": "GHSA-f8pw-77pg-8gv6",
  "modified": "2022-04-13T00:01:12Z",
  "published": "2022-02-10T00:01:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5953"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220222-0005"
    },
    {
      "type": "WEB",
      "url": "https://www.insyde.com/products"
    },
    {
      "type": "WEB",
      "url": "https://www.insyde.com/security-pledge"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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