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Issue 716066 link

Starred by 4 users

Issue metadata

Status: Duplicate
Merged: issue 694384
Owner: ----
Closed: Oct 21
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug

Blocked on:
issue 762104
issue 694384
issue 719968



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Pause all media when lid is closed and screen locked, don't restart on open

Reported by dkrishna...@gmail.com, Apr 27 2017

Issue description

VULNERABILITY DETAILS

Someone else can know what I am watching on youtube or a videos on my chromebook just by opening my chrome book lid without entering password. I have secured to enter password everytime I open lid, but no use.

Hi, When my chrome book lid closed while watching YouTube or videos, it is going to sleep which is good. I have set it to ask password when I open lid, i.e when it come back from sleep. But without even entering password, youtube or videos starts playing in the background. This is not secure at all. Clearly it is BUG. Can you please fix and update me more about it. 

Secondly, Is there an option if I want to automatically close all browsers/tabs when I close the lid. Or Is there an option that system shuts down instead of going to sleep when lid closed. Just an option to user how he want's it to behave. You can at least keep these options in advanced settings. Or can you let me know if I can do with any scripts or changing any settings I am not aware of.

Thanks a lot for your help.

I also brought this up with one of the google chat agent Anna today. She/he checked and agreed it is an privacy issue that need to be fixed as we do not want someone else to know what I am watching without security password on my laptop. Now they will easily know just by opening lid.

VERSION
Chrome Version: Version 57.0.2987.146 (64-bit)
Operating System: ChromeBook

REPRODUCTION CASE
Please enable password required everytime chrome book wake up and play youtube and close the lid and see if video starts playback when lid opens without entering password

FOR CRASHES, PLEASE INCLUDE THE FOLLOWING ADDITIONAL INFORMATION
N/A

 

Comment 1 by palmer@chromium.org, Apr 27 2017

Cc: jorgelo@chromium.org
Components: Internals>Media
Labels: Security_Impact-Stable OS-Chrome
Summary: Video plays in the background even before re-authentication (was: Security: Someone else can know what I am watching without password.)
jorgelo: Can you please take a look?
Status: Untriaged (was: Unconfirmed)
This is, unfortunately, somewhat working as intended. Essentially there's two factors at play:

1-We want music and videos to keep playing when the screen goes off, if people are e.g. using their Chromebooks to play music at a party.

2-We don't have a clear distinction between "screen off but something playing" and "screen off because we just came back from sleep/just reopened the lid".

Ideally, we'd only keep playing music if the screen is locked/turned off, but not if we're resuming from sleep after closing and re-opening the lid.
If user want to continue to listen to content when he open lid, he can choose not to lock the screen every time he open lid.

But,

The whole purpose of asking to login everytime lid open is to secure the content. Be it a text, graphic, audio or video. It is content that need to be protected. 

when user specifically selected to choose to login everytime lid open, it means user do not want anyone to intrude into content.

When he close the lid and packed the chromebook and someone had the opportunity   to open lid, then the disaster can happen. If the video is too personal, it will hurt the business or relationship.

Guys I love chromebook. I am just pointing out large security concern of audio content being leaked even when user choose to authenticate to reveal the content everytime lid open.This is my 6th chromebook purchase and I love it. 

Isn't this a serious security issue that needs a fix to use the chromebook securely. 
Cc: mlamouri@chromium.org avayvod@chromium.org battre@chromium.org
Components: Privacy UI>Auth Blink>Media
Labels: -Type-Bug-Security -Restrict-View-SecurityTeam Restrict-View-SecurityEmbargo Pri-2 Type-Bug
Summary: Video plays in the background even before re-authentication after lid re-opened (was: Video plays in the background even before re-authentication)
I do think there is a potential functional bug here; as #2 says, this behavior is "somewhat" working as intended. For example, we could consider closing the lid (but not just the screen locking) to be equivalent to an explicit Pause action on all media. I leave that question to the media and auth teams.

+battre FYI, this issue has a privacy aspect as well.

But I don't see a security vulnerability. If the 'attacker' is someone physically near the device, most defense techniques cannot work.
Cc: dah...@chromium.org dalecur...@chromium.org
+Dale and John
Cc: tbuck...@chromium.org
+tbuckley who was looking into this I think.
Cc: warx@chromium.org
+warx who has a CL for something similar too, https://codereview.chromium.org/2821303004/
Owner: warx@chromium.org
Status: Assigned (was: Untriaged)
Summary: Pause all media when lid is closed, don't restart on open (was: Video plays in the background even before re-authentication after lid re-opened)
Updating title. This is something we can fix with  Issue 694384 
Blockedon: 719968
With  bug 719968 , there will be an internal flag to turn on media session without audio focus which will allow https://codereview.chromium.org/2821303004/ to work without having to turn on audio focus as a side effect.
Components: -Blink>Media Internals>Media>Session

Comment 11 by warx@chromium.org, May 16 2017

Status: Started (was: Assigned)
One question, if lid open should not start audio playing, it should keep paused until user manually starts the audio, right?
Yep, the video should stay paused until the user manually starts it again.

Comment 13 by warx@chromium.org, May 18 2017

Cc: derat@chromium.org

Comment 14 by derat@chromium.org, May 18 2017

Blockedon: 694384
Can we make this not be a security bug (which means that Chrome OS developers can't see it unless they're cc-ed), or just dupe it into a public bug? This is the way that Chrome OS has always worked. I'm fine with it being changed if UX decides that that makes sense, but it's not as if it was unknown up until now.

Comment 15 by derat@chromium.org, May 18 2017

Also, this doesn't have anything to do with the lid being closed. It should probably be tied either to the system suspending or the screen being locked. The latter will break people who want audio playback to continue even when their screen is locked, though.
Labels: -Restrict-View-SecurityEmbargo -Security_Impact-Stable
Labels removed. It should never have been a security issue in the first place, privacy bug at most, more like feature request.

Comment 17 by derat@chromium.org, May 18 2017

Summary: Pause all media when lid is closed and screen locked, don't restart on open (was: Pause all media when lid is closed, don't restart on open)
Looks like issue is being diluted. I am in music industry and my recorded music videos are being stolen/leaked from my chromebook just by someone opening my chromebook without credentials. Does this not mean my data is not secured? How is my business data is secured? Is this not data Security issue?
Also please note this has nothing to do with  Issue 694384 . You are mixing two different reports.  Issue 694384  is focused on need/feature request where as 716066 is reporting data security issue when lid open without credentials. Why mix these issues. Please take serious look into the issue. Let me know what help is needed to understand the security issue better.

Comment 20 by derat@chromium.org, May 21 2017

You'll see the same behavior on any other laptop, as far as I'm aware. Programs normally pick up where they left off after a system suspends and resumes. This is standard behavior.

As mentioned earlier, there's a feature request to override this behavior and pause video and audio elements automatically. If you want to prevent videos from continuing after the system resumes before this change is made, you can pause or close the video before suspending your system.
I did great mistake spending my time to report issue to Google. From this experience , I will surely stay away from you guys. 

I knew you guys will surely fix these serious issues, Buy you will never admit the seriousness of the issue or give credit to anyone who found it.

Hats Off and Sign Off.
And do not say same behaviour from any other laptop without verifying.

My Lenovo Thinkpad W540 with windows 10 doesn't do that.

Comment 23 by warx@chromium.org, Sep 5 2017

Blockedon: 762104

Comment 24 by warx@chromium.org, Jun 26 2018

Owner: ----
Status: Untriaged (was: Started)
Components: -Internals>Media>Session -Internals>Media OS>Kernel>Audio
Updating components per Warx@.
Mergedinto: 694384
Status: Duplicate (was: Untriaged)

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