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[Bug 1416070] Re: Encryption Password Visible in Virt Terminal w/Wrong Screen Res


Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Private Security to Public

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  Encryption Password Visible in Virt Terminal w/Wrong Screen Res

Status in lightdm package in Ubuntu:

Bug description:
  I have my hard drive set up with encryption.  When the machine boots,
  it asks me for the security key to decrypt the drive.  This is normal,
  expeced behaviour.

  However,in my case the screen is not the correct resolution, so I
  can't type in the box.  However, since the box is there and I'm used
  to tryng that, I have still done it as a matter of habit.

  If you type the password for the Security Key and it doen't go into
  the box, if you switch to a different virtual Terminal (Ctrl+Alt+F1 or
  Ctrl+Alt+F2 for instance) and then back to the Virtual Terminal which
  the login manager uses (Ctrl+Alt+F7) instead of seeing the same
  screen, you get a black screen and at the top is the password to
  decrypt the drive in plain text.

  I can usually get around the incorrect resolution by rebooting, and
  then a different screen comes up asking for password - an all text
  screen that doesn't have the issue.  However, if the lightDM screen
  comes up I must always reboot as my password is not being entered into
  that screen where it should be and can be seen in plain text by
  switching virtual terminals.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: lightdm 1.12.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 29 19:04:13 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-28 (1 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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