github - ghsa-pfm8-cf33-8rhf

GHSA-PFM8-CF33-8RHF

Vulnerability from github – Published: 2022-02-10 00:00 – Updated: 2025-11-04 21:30

Details

A vulnerability exists in SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated table variables EFI_BOOT_SERVICES and EFI_RUNTIME_SERVICES. This can be used by an attacker to overwrite address location of the function (LocateHandleBuffer) to the address location of arbitrary code controlled by the attacker. On system call to SWSMI handler, the arbitrary code can be triggered to execute.

Severity ?

8.2 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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  "aliases": [
    "CVE-2021-41841"
  ],
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    "severity": "HIGH"
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  "id": "GHSA-pfm8-cf33-8rhf",
  "modified": "2025-11-04T21:30:26Z",
  "published": "2022-02-10T00:00:58Z",
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    },
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    },
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    },
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      "type": "WEB",
      "url": "https://www.insyde.com/security-pledge"
    },
    {
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      "url": "https://www.insyde.com/security-pledge/SA-2022019"
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      "url": "https://www.kb.cert.org/vuls/id/796611"
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    }
  ]
}

CVE-2021-41841 (GCVE-0-2021-41841)

Vulnerability from cvelistv5 – Published: 2022-02-03 01:04 – Updated: 2025-11-04 19:12

Summary

An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of Inclusion of Functionality from an Untrusted Control Sphere.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.insyde.com/security-pledge	x_refsource_MISC
	https://www.insyde.com/security-pledge/SA-2022019	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-2022021…	x_refsource_CONFIRM
	https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-PFM8-CF33-8RHF

CVE-2021-41841 (GCVE-0-2021-41841)

Tags

Sightings

Nomenclature