CVE-2017-7770

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.64%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1317242 issue tracking vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-15/ vendor advisory
http://www.securitytracker.com/id/1038689 vdb entry third party advisory
http://www.securityfocus.com/bid/99049 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7770?
CVE-2017-7770 has been scored as a medium severity vulnerability.
How to fix CVE-2017-7770?
To fix CVE-2017-7770, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7770 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7770 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7770?
CVE-2017-7770 affects Mozilla Firefox.
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