Improper Restriction of Rendered UI Layers or Frames in Firefox for Android and Mozilla Firefox - CVE-2024-5689

Vulnerability identifier: #VU91742

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2024-5689

CWE-ID: CWE-1021

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
Firefox for Android
Mozilla Firefox
Gentoo Linux
Ubuntu
openEuler
Fedora
www-client/firefox
firefox
firefox (Ubuntu package)
firefox-debuginfo
firefox-debugsource

The vulnerability allows a remote attacker to perform phishing attack.

The vulnerability exists due user confusion when taking screenshots with Firefox. In addition to detecting when a user was taking a screenshot (XXX), a website was able to overlay the "My Shots" button that appeared, and direct the user to a replica Firefox Screenshots page that could be used for phishing.

Install updates from vendor's website.

• https://www.mozilla.org/en-US/security/advisories/mfsa2024-25/