CWE
290
Advisory Published
CVE Published
Updated

CVE-2023-4001: Grub2: bypass the grub password protection feature

First published: Mon Jul 24 2023(Updated: )

<a class="bz_bug_link bz_secure " title="" href="show_bug.cgi?id=2223437">https://bugzilla.redhat.com/show_bug.cgi?id=2223437</a> The "/boot/efi/EFI/fedora/grub.cfg" configuration file allows an unprivileged user with physical access to a computer to bypass the GRUB password protection feature on many (but not all) UEFI-based systems.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
CentOS Grub2-pc-modules
Red Hat Enterprise Linux=9.0
Fedora=38
Fedora=39

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Frequently Asked Questions

  • What is the impact of CVE-2023-4001?

    CVE-2023-4001 allows an unprivileged user with physical access to bypass the GRUB password protection.

  • What versions are affected by CVE-2023-4001?

    CVE-2023-4001 affects GRUB2 and specific versions of Red Hat Enterprise Linux 9.0, Fedora 38, and Fedora 39.

  • How can I mitigate CVE-2023-4001?

    To mitigate CVE-2023-4001, restrict physical access to servers and update your GRUB configuration file to strengthen security.

  • Is CVE-2023-4001 easy to exploit?

    Yes, CVE-2023-4001 is considered easy to exploit because it requires only physical access to the machine.

  • Are there any updates available for CVE-2023-4001?

    Yes, patches and updates addressing CVE-2023-4001 have been released and should be applied promptly.

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