Ubuntu: USN-5037-2 Moderate Security Update for Firefox Regression

ubuntu

August 25, 2021

USN-5037-1 caused a regression in Firefox.

Summary

USN-5037-1 caused a regression in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

USN-5037-1 fixed vulnerabilities in Firefox. The update introduced a

regression that caused Firefox to repeatedly prompt for a password. This

update fixes the problem.

We apologize for the inconvenience.

Original advisory 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, obtain sensitive

information, trick a user into accepting unwanted permissions, or execute

arbitrary code.

Topics Covered

security advisory Ubuntu update instructions Firefox regression browser issue

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
  firefox                         91.0.2+build1-0ubuntu0.21.04.1

Ubuntu 20.04 LTS:
  firefox                         91.0.2+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         91.0.2+build1-0ubuntu0.18.04.1

After a standard system update you need to restart Firefox to make
all the necessary changes.