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Starred by 3 users
Status: Fixed
Ooo until EOY 2017. Assign no bugs.
Closed: Dec 2016
EstimatedDays: ----
NextAction: ----
OS: All
Pri: 1
Type: Bug-Security

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Security: Form validation bubbles allow spoofing on other tabs
Reported by, Dec 11 2016 Back to list

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
Components: Blink>Forms>Validation
Status: Untriaged
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">
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
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.
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.
Project Member Comment 8 by, Dec 13 2016
Labels: -M-54 M-55
Comment 9 by, Dec 14 2016
Status: Started
Comment 10 by, Dec 15 2016
Labels: Merge-Request-56 Merge-Request-55
Status: Fixed
Though Bugdroid didn't notify a commit, [1] fixed this issue.



+ awhalley@ for merge review.
Project Member Comment 13 by, Dec 15 2016
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)
Project Member Comment 16 by, Dec 16 2016
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}


Labels: -Hotlist-Merge-Review -Hotlist-Merge-Approved -Merge-Review-55 M-56
Labels: reward-topanel
Labels: -Security_Severity-High Security_Severity-Medium
Labels: -reward-topanel reward-unpaid reward-1000
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.
Labels: -reward-unpaid reward-inprocess
Labels: Release-0-M56
Labels: CVE-2017-5016
Project Member Comment 25 by, Mar 23 2017
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
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