Ubuntu 21.10: 5186-2 Moderate: Firefox Update on Minor Issues

ubuntu

December 20, 2021

USN-5186-1 caused some minor regressions in Firefox.

Summary

USN-5186-1 caused some minor regressions in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several

minor regressions. 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, conduct spoofing attacks, bypass CSP restrictions, or

execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538,

CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543,

CVE-2021-43545, CVE-2021-43546)

A security issue was discovered with the handling of WebExtension

permissions. If a user were tricked into installing a specially crafted

extension, an attacker could potentially exploit this to ...

Read the Full Advisory

Topics Covered

security advisory Ubuntu Firefox regression fix browser update

Update Instructions

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

Ubuntu 21.10:
  firefox                         95.0.1+build2-0ubuntu0.21.10.1

Ubuntu 21.04:
  firefox                         95.0.1+build2-0ubuntu0.21.04.1

Ubuntu 20.04 LTS:
  firefox                         95.0.1+build2-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         95.0.1+build2-0ubuntu0.18.04.1

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