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Issue metadata

Status: Fixed
Closed: Sep 2014
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 1
Type: Bug-Security

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Draw the image outside of the inline frame

Reported by, Aug 22 2014

Issue description

Steps to reproduce the problem:
1. Open the attached HTML file repro1.html

What is the expected behavior?

What went wrong?

Did this work before? N/A 

Chrome version: 37.0.2062.94  Channel: beta
OS Version: 4.4.2
Flash Version: 

This seems to be the same issue discussed here: [ issue 331168 ]

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Comment 1 by ClusterFuzz, Aug 25 2014

Labels: Untriaged-1
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Comment 3 by, Aug 26 2014

Labels: Cr-Blink-Rendering
Hi - thank you for your report.  I am unsure what the reproduction step here is, can you describe in more detail the vulnerability you are reporting, and how to verify it locally?  Does this only affect Android?
Hi. Thanks for your reply. This will work only on Android.

The first attached POC (repro1.html, repro2.html) is the simple repro, the second (repro.html, victim.html) is more effective and fun.

Steps to reproduce:
1. Serve the attached HTML files from a local http server (in my case, Python 3.4's builtin HTTP Server)
2. Go to http://[ADDR]/{repro1,victim}.html
3. Click anywhere on page

Add to explanation: The second POC is use  issue 406559  to hijack the click event.
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Comment 6 by ClusterFuzz, Aug 28 2014

Labels: -Untriaged-1 Untriaged-2

Comment 7 by, Aug 28 2014

Thanks for the update.  Still trying to replicate this issue.
Reproduced on Linux with DevTools device emulation enabled. It doesn't need a web server to reproduce.

Modified 102400 to 1024 in the test to easy tracing. Attached a trace containing the frame dumps and a screen shot of trace viewer.

Seems something wrong with composited scrollbars.
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Screenshot from 2014-08-28 13:45:59.png
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I'm glad you can reproduce it!

Comment 10 by, Aug 29 2014

Labels: -Untriaged-2 Security_Impact-Stable Security_Severity-Medium
wangxianzhu@ I'm assigning you as owner as you're able to reproduce this.  Can you triage and/or reassign as necessary.
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Comment 11 by ClusterFuzz, Aug 29 2014

Labels: -Pri-2 Pri-1
vollick@ could you take a look or reassign?

The issue seems that the customized scrollbar layers is not clipped by the scrolling layer.
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Comment 13 by ClusterFuzz, Aug 30 2014

Labels: Untriaged-3
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Comment 14 by ClusterFuzz, Aug 31 2014

Labels: -Untriaged-3 Untriaged-4

Comment 15 by, Sep 2 2014

Status: Assigned
Labels: M-37
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Comment 17 by ClusterFuzz, Sep 6 2014

Labels: Nag
vollick@: Uh oh! This issue is still open and hasn't been updated in the last 7 days. Since this is a serious security vulnerability, we want to make sure progress is happening. Can you update the bug with current status, and what, if anything, is blocking?

If you are not the right Owner for this bug, please find someone else to own it as soon as possible and remove yourself as Owner.

If the issue is already fixed or you are to unable to reproduce it, please close the bug. (And thanks for fixing the bug!).

These nags can be disabled by adding a 'WIP' label and an optional codereview link.

- Your friendly ClusterFuzz
I'm going to be ooo for a week, but I've cc'd Glenn in case he has time to look at this (or delegate it) before I come back.
Project Member

Comment 20 by, Sep 16 2014

The following revision refers to this bug:

r182021 | | 2014-09-15T23:56:46.631624Z

Changed paths:

Clip iframe overflow controls.

Clips overflow controls via m_overflowControlsHostLayer.

BUG= 406593 

Review URL:
Labels: -Untriaged-4 -Nag
Above fix is trivial.

Requesting a merge to both M38 and M37
Labels: Merge-Requested

Comment 23 by, Sep 17 2014

Labels: -M-37 -Merge-Requested M-38 Merge-Approved
No more 37s.
Project Member

Comment 24 by, Sep 18 2014

Labels: -Merge-Approved merge-merged-2125
The following revision refers to this bug:

r182216 | | 2014-09-18T03:51:24.186156Z

Changed paths:

Merge 182021 "Clip iframe overflow controls."

> Clip iframe overflow controls.
> Clips overflow controls via m_overflowControlsHostLayer.
> BUG= 406593 
> Review URL:

Review URL:
Labels: -M-38 M-37 Merge-Requested
+amineer for 37
Labels: -M-37 -Merge-Requested
Status: Fixed
Only P0's for 37. So I'm removing the merge request.
Project Member

Comment 28 by ClusterFuzz, Sep 19 2014

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: reward-topanel Release-0-M38
Labels: -reward-topanel reward-unpaid reward-1500 CVE-2014-3201
Congratulations - $1500 for this report ($1000 for the bug + $500 for the high-quality proof of concept).
Labels: -reward-unpaid reward-inprogress
Payment in progress.
Labels: -reward-inprogress reward-inprocess
Labels: -reward-inprocess
Processing via our e-payment system can take up to six weeks, but the reward should be on its way to you. Thanks again for your help!
Project Member

Comment 35 by ClusterFuzz, Dec 26 2014

Labels: -Restrict-View-SecurityNotify
Bulk update: removing view restriction from closed bugs.
Labels: -Cr-Blink-Rendering Cr-Blink-Layout
Migrate from Cr-Blink-Rendering to Cr-Blink-Layout
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Comment 37 by, Oct 1 2016

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit - Your friendly Sheriffbot
Project Member

Comment 38 by, Oct 2 2016

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit - Your friendly Sheriffbot
Labels: allpublic
Labels: CVE_description-submitted

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