Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

Ubuntu: USN-4234-2: Firefox regressions

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:P/A:C)
Published
Jan 30, 2020
Added
Jan 31, 2020
Modified
Feb 19, 2025

Description


USN-4234-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems.


We apologize for the inconvenience.


Original advisory details:


Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass Content Security Policy (CSP) restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code.

Solution

ubuntu-upgrade-firefox
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.