[Bug 2040137] Re: exposing the EFI shell in Secure Boot mode can lead to security bypass

Nishit Majithia 2040137 at bugs.launchpad.net
Tue Jun 3 10:59:11 UTC 2025


** Changed in: lxd (Ubuntu Focal)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/2040137

Title:
  exposing the EFI shell in Secure Boot mode can lead to security bypass

Status in edk2 package in Ubuntu:
  Fix Released
Status in lxd package in Ubuntu:
  New
Status in edk2 source package in Focal:
  Fix Released
Status in lxd source package in Focal:
  Won't Fix
Status in edk2 source package in Jammy:
  Fix Released
Status in lxd source package in Jammy:
  New
Status in edk2 source package in Mantic:
  Fix Released
Status in lxd source package in Mantic:
  Won't Fix
Status in edk2 source package in Noble:
  Fix Released
Status in lxd source package in Noble:
  New

Bug description:
  The EFI shell is available as a built-in Boot Option in Ubuntu's OVMF
  builds, even when Secure Boot is enabled.

  This application has known mechanisms for bypassing UEFI Secure Boot,
  and has already been barred from signing previously.

  It should either: not be built into Secure Boot capable OVMF builds,
  or disabled when Secure Boot is enabled in any capacity.

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