CVE-2016-2831
Published Jun 13, 2016 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduct clickjacking or spoofing attacks, via a crafted web site.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduct clickjacking or spoofing attacks, via a crafted web site.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- 10%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 1036057 ↗
- RHSA-2016:1217 ↗
- openSUSE-SU-2016:1557 ↗
- www.oracle.com ↗
- openSUSE-SU-2016:1552 ↗
- USN-2993-1 ↗
- SUSE-SU-2016:1691 ↗
- www.mozilla.org ↗
- 91075 ↗
- DSA-3600 ↗
- bugzilla.mozilla.org ↗
Record history
Published Jun 13, 2016 · Last refreshed Oct 23, 2026