Advisory Published
Updated

CVE-2023-27471

First published: Fri Aug 18 2023(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Insyde InsydeH2O=5.0
Insyde InsydeH2O=5.1
Insyde InsydeH2O=5.2
Insyde InsydeH2O=5.3
Insyde InsydeH2O=5.4
Insyde InsydeH2O=5.5

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Frequently Asked Questions

  • What is CVE-2023-27471?

    CVE-2023-27471 is an issue discovered in Insyde InsydeH2O with kernel 5.0 through 5.5 where UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable.

  • How does CVE-2023-27471 affect Insyde InsydeH2O?

    CVE-2023-27471 allows the 'MeSetup' UEFI variable to be overwritten using operating system APIs, potentially leading to exploitation of this vulnerability.

  • What is the severity of CVE-2023-27471?

    CVE-2023-27471 has a severity rating of medium.

  • Which versions of Insyde InsydeH2O are affected by CVE-2023-27471?

    Insyde InsydeH2O versions 5.0 through 5.5 are affected by CVE-2023-27471.

  • How can I fix CVE-2023-27471?

    There is currently no official fix or patch available for CVE-2023-27471. It is recommended to stay updated with security advisories from Insyde or contact their support for further guidance.

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