USN-5107-1: Firefox vulnerabilities
7 October 2021
Firefox could be made to crash or run programs as your login if it opened a malicious website.
Releases
Packages
- firefox - Mozilla Open Source web browser
Details
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, spoof another
origin, or execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04
After a standard system update you need to restart Firefox to make
all the necessary changes.