CVE-2017-7770

MEDIUM 5.9CVE-2017-7770 · Published 11/06/2018 · updated 17/06/2026

In short

CVE-2017-7770 is a MEDIUM (CVSS 5.9) vulnerability affecting firefox (mozilla).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 66.1% of all vulnerabilities.
Fix: update to 54.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 54.0`	`54.0`

Description

A mechanism where when a new tab is loaded through JavaScript events, if fullscreen mode is then entered, the addressbar will not be rendered. This would allow a malicious site to displayed a spoofed addressbar, showing the location of an arbitrary website instead of the one loaded. Note: this issue only affects Firefox for Android. Desktop Firefox is unaffected. This vulnerability affects Firefox < 54.

References

securityfocus.com/bid/99049 · Third Party Advisory
securitytracker.com/id/1038689 · Third Party Advisory
bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2017-15 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 54.0

54.0

Description

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