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Starred by 3 users

Issue metadata

Status: Fixed
Closed: Dec 2016
EstimatedDays: ----
NextAction: ----
OS: All
Pri: 1
Type: Bug-Security

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Issue 673163: Security: Form validation bubbles allow spoofing on other tabs

Reported by, Dec 11 2016

Issue description

Content spoofing on any website

Chrome Version: Version 55.0.2883.75 (64-bit) stable
Operating System: Ubuntu 16.04.1 LTS

Chrome Version: Version 55.0.2883.75
Operating System: Windows 10

Chrome Version: Version 54.0.2840.85 stable
Operating System: Android 6.0.1 (crash)

Screenshot from 2016-12-11 23-39-41.png
66.7 KB View Download

Comment 1 by, Dec 12 2016

Components: Blink>Forms>Validation
Status: Untriaged (was: Unconfirmed)
Summary: Security: Form validation bubbles allow spoofing on other tabs (was: Security: Content spoofing on any website)
Confirmed in 57.2946. This is a UX bug whereby form field validation bubbles can appear over the wrong tab.

function test(){
aaa = document.getElementById("aaa"); = '0';
aaa.oninvalid = function (e) {"WARNING!\nYOUR COMPUTER MAY BE AT RISK.\nCALL: 800-111-2222");
    <input placeholder="aaa" required id="aaa" />
    <input id='bbb' type="submit" name="submit">

Comment 2 by, Dec 12 2016

Possibly related to  Issue 516694 .

Comment 3 by, Dec 12 2016

Components: Platform>DevTools>UX
Labels: Security_Severity-High M-54 Security_Impact-Stable OS-All Pri-1
Status: Available (was: Untriaged)

Comment 4 by, Dec 12 2016

Components: -Platform>DevTools>UX Security>UX

Comment 5 by, Dec 12 2016

Labels: Team-Security-UX
Correcting the UX tags, so hopefully the Enamel team will see this.

Comment 6 by, Dec 12 2016

Components: -Security>UX

Comment 7 by, Dec 12 2016

Per Enamel folks, the Security>UX component is officially deprecated and the Team-Security-UX label should be used instead.

Comment 8 by, Dec 13 2016

Project Member
Labels: -M-54 M-55

Comment 9 by, Dec 14 2016

Status: Started (was: Available)

Comment 10 by, Dec 15 2016

Labels: Merge-Request-56 Merge-Request-55
Status: Fixed (was: Started)
Though Bugdroid didn't notify a commit, [1] fixed this issue.


Comment 11 by, Dec 15 2016

+ awhalley@ for merge review.

Comment 12 by, Dec 15 2016


Comment 13 by, Dec 15 2016

Project Member
Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify

Comment 14 by, Dec 16 2016

Labels: -Merge-Request-55 Merge-Review-55 Hotlist-Merge-Review
[Automated comment] Request affecting a post-stable build (M55), manual review required.

Comment 15 by, Dec 16 2016

Labels: -Merge-Request-56 Merge-Approved-56 Hotlist-Merge-Approved
Your change meets the bar and is auto-approved for M56 (branch: 2924)

Comment 16 by, Dec 16 2016

Project Member
Labels: -merge-approved-56 merge-merged-2924
The following revision refers to this bug:

commit 3839b3cc636bc10b5385a4f618e5b6ccfac4466b
Author: Kent Tamura <>
Date: Fri Dec 16 05:56:33 2016

Merge "Form validation: Do not show validation bubble if the page is invisible." to M56 branch

BUG= 673163 

Cr-Commit-Position: refs/heads/master@{#438476}
(cherry picked from commit a8e17a3031b6ad69c399e5e04dd0084e577097fc)

Review-Url: .
Cr-Commit-Position: refs/branch-heads/2924@{#523}
Cr-Branched-From: 3a87aecc31cd1ffe751dd72c04e5a96a1fc8108a-refs/heads/master@{#433059}


Comment 17 by, Dec 16 2016

Labels: -Hotlist-Merge-Review -Hotlist-Merge-Approved -Merge-Review-55 M-56

Comment 18 by, Dec 19 2016

Labels: reward-topanel

Comment 19 by, Jan 4 2017

Labels: -Security_Severity-High Security_Severity-Medium

Comment 20 by, Jan 9 2017

Labels: -reward-topanel reward-unpaid reward-1000

Comment 21 by, Jan 10 2017

Many thanks for the report.  The panel decided to reward $1,000 for this bug.  A member of our finance team will reach out shortly.

*** Boilerplate reminders! ***
Please do NOT publicly disclose details until a fix has been released to all our users. Early public disclosure may cancel the provisional reward. Also, please be considerate about disclosure when the bug affects a core library that may be used by other products. Please do NOT share this information with third parties who are not directly involved in fixing the bug. Doing so may cancel the provisional reward. Please be honest if you have already disclosed anything publicly or to third parties. Lastly, we understand that some of you are not interested in money. We offer the option to donate your reward to an established charity. If you prefer this option, let us know and we will also match your donation - subject to our discretion. Any rewards that are unclaimed after 12 months will be donated to a charity of our choosing.

Comment 22 by, Jan 10 2017

Labels: -reward-unpaid reward-inprocess

Comment 23 by, Jan 24 2017

Labels: Release-0-M56

Comment 24 by, Jan 25 2017

Labels: CVE-2017-5016

Comment 25 by, Mar 23 2017

Project Member
Labels: -Restrict-View-SecurityNotify allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit - Your friendly Sheriffbot

Comment 26 by, Apr 25 2018

Labels: CVE_description-submitted

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