[Bug 1374742] Re: opening privileged shell after entering wrong password for LUKS three times

[hon]

Access to keyboard on booting system is not physical access. System may
have protected GRUB and firmware. Attacker may got priveleged shell
without physical access and damage data, firmware, or add keyloger into
/boot.

** Description changed:

  You should have root filesystem encrypted by LUKS. Start operational system and enter incorrect passphrase for root filesystem three times. Wait several seconds and you give busybox shell with superuser rights from initramdisk.
- System should not open shell. It should ask for passphrase forever or show error, but don't open shell.
+ System should not open shell. It should ask for passphrase forever or show error, but don't open shell. OS: Ubuntu 12.04, Ubuntu 14.04.

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https://bugs.launchpad.net/bugs/1374742

Title:
  opening privileged shell after entering wrong password for LUKS three
  times

Status in tools for generating an initramfs:
  New
Status in “initramfs-tools” package in Ubuntu:
  Invalid

Bug description:
  You should have root filesystem encrypted by LUKS. Start operational system and enter incorrect passphrase for root filesystem three times. Wait several seconds and you give busybox shell with superuser rights from initramdisk.
  System should not open shell. It should ask for passphrase forever or show error, but don't open shell. OS: Ubuntu 12.04, Ubuntu 14.04.

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