rebooting defeats the screen lock timeout

Bug #1383086 reported by James Hunt
282
This bug affects 3 people
Affects Status Importance Assigned to Milestone
unity8 (Ubuntu)
Fix Released
Medium
Michael Terry

Bug Description

If you enable pin unlock, then repeatedly enter the incorrect pin, eventually you'll get a message stating that the phone cannot be unlocked for 5 minutes. However, this restriction can be trivially bypassed by simply rebooting the phone (which takes less than 5 minutes :-)

krillin, r117.

Related branches

James Hunt (jamesodhunt)
information type: Public → Public Security
Changed in unity8 (Ubuntu):
assignee: nobody → Michael Terry (mterry)
Revision history for this message
Michał Sawicz (saviq) wrote :

I think this was discussed and ACKed by security, the time needed to reboot is enough to prevent any real bruteforcing of the password.

Changed in unity8 (Ubuntu):
status: New → Incomplete
assignee: Michael Terry (mterry) → nobody
Revision history for this message
Michael Terry (mterry) wrote :

This is relatively easy to fix -- need to just save the time we should allow login again in a field.

Revision history for this message
Jamie Strandboge (jdstrand) wrote :

While I think the time to reboot is 'enough', it is clearly a bug and mterry's suggestion makes sense to me.

Michał Sawicz (saviq)
Changed in unity8 (Ubuntu):
status: Incomplete → Triaged
importance: Undecided → Medium
assignee: nobody → Michael Terry (mterry)
Michael Terry (mterry)
Changed in unity8 (Ubuntu):
assignee: Michael Terry (mterry) → nobody
Michael Terry (mterry)
Changed in unity8 (Ubuntu):
assignee: nobody → Michael Terry (mterry)
status: Triaged → In Progress
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package unity8 - 8.11+15.10.20150907-0ubuntu1

---------------
unity8 (8.11+15.10.20150907-0ubuntu1) wily; urgency=medium

  [ Michal Sawicz ]
  * Resync wily with vivid

  [ Albert Astals Cid ]
  * Accomodate header height when using a card carousel with non
    overlayed header (LP: #1489309)
  * Fix restart unity8 from inside the phone more than two times (LP:
    #1487946)

  [ Gary.Wzl ]
  * Move textarea up automatically when inputmethod popup. (LP:
    #1485947)

  [ Lukáš Tinkl ]
  * Introduce a GlobalShortcut QML component for handling global
    keyboard shortcuts

  [ Michael Terry ]
  * Fix the fact that a user that is locked out from their account for
    five minutes after entering too many wrong passwords can simply
    reboot to try again. (LP: #1383086)
  * Fix the fact that a user that is locked out from their account for
    five minutes after entering too many wrong passwords can simply
    reboot to try again. (LP: #1383086)

  [ Michael Zanetti ]
  * Implement progressive autoscrolling in desktop spread
  * add an animation transition when invoking the spread by hitting the
    right edge

 -- CI Train Bot <email address hidden> Mon, 07 Sep 2015 14:05:37 +0000

Changed in unity8 (Ubuntu):
status: In Progress → Fix Released
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