Bug 1342898 (CVE-2016-2831) - CVE-2016-2831 Mozilla: Entering fullscreen and persistent pointerlock without user permission (MFSA 2016-58)
Summary: CVE-2016-2831 Mozilla: Entering fullscreen and persistent pointerlock without...
Alias: CVE-2016-2831
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1335788
TreeView+ depends on / blocked
Reported: 2016-06-06 04:19 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-17 03:47 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2016-07-05 06:43:04 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:1217 0 normal SHIPPED_LIVE Critical: firefox security update 2016-06-08 21:00:59 UTC

Description Huzaifa S. Sidhpurwala 2016-06-06 04:19:07 UTC
Security researcher sushi Anton Larsson reported that when paired fullscreen and pointerlock requests are done in combination with closing windows, a pointerlock can be created within a fullscreen window without user permission. This pointerlock cannot then be cancelled without terminating the browser, resulting in a persistent denial of service attack. This can also used for spoofing and clickjacking attacks against the browser UI. 

External Reference:



Name: the Mozilla project
Upstream: sushi Anton Larsson

Comment 1 errata-xmlrpc 2016-06-08 17:05:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2016:1217 https://access.redhat.com/errata/RHSA-2016:1217

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