CVE-2023-27471 — MEDIUM (5.5)

Vulnerability Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some systems, this variable can be overwritten using operating system APIs. Exploitation of this vulnerability could potentially lead to denial of service for the platform.

CVSS Score

5.5

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Insyde	Insydeh2O	5.0

References

https://www.insyde.com/security-pledge/SA-2023036Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023036Vendor Advisory

FAQ

What is CVE-2023-27471?

CVE-2023-27471 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some system...

How severe is CVE-2023-27471?

CVE-2023-27471 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-27471?

Check the references section above for vendor advisories and patch information. Affected products include: Insyde Insydeh2O.