=========================================================================Ubuntu Security Notice USN-5229-1
January 13, 2022

firefox vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.10
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

Software Description:
- 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 the browser
UI, bypass security restrictions, obtain sensitive information across
domains, or execute arbitrary code.

Update instructions:

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

Ubuntu 21.10:
  firefox                         96.0+build2-0ubuntu0.21.10.1

Ubuntu 21.04:
  firefox                         96.0+build2-0ubuntu0.21.04.1

Ubuntu 20.04 LTS:
  firefox                         96.0+build2-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         96.0+build2-0ubuntu0.18.04.1

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

References:
  
  CVE-2021-4140, CVE-2022-22737, CVE-2022-22738, CVE-2022-22739,
  CVE-2022-22740, CVE-2022-22741, CVE-2022-22742, CVE-2022-22743,
  CVE-2022-22745, CVE-2022-22747, CVE-2022-22748, CVE-2022-22751,
  CVE-2022-22752

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/96.0+build2-0ubuntu0.21.10.1
  https://launchpad.net/ubuntu/+source/firefox/96.0+build2-0ubuntu0.21.04.1
  https://launchpad.net/ubuntu/+source/firefox/96.0+build2-0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/firefox/96.0+build2-0ubuntu0.18.04.1