[USN-4546-2] Firefox regressions

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[USN-4546-2] Firefox regressions

Chris Coulson-3
==========================================================================
Ubuntu Security Notice USN-4546-2
October 15, 2020

firefox regressions
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-4546-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-4546-1 fixed vulnerabilities in Firefox. The update introduced various
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 in to opening a specially crafted website, an attacker could
 potentially exploit these to cause a denial of service, conduct cross-site
 scripting (XSS) attacks, spoof the site displayed in the download dialog,
 or execute arbitrary code.

Update instructions:

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

Ubuntu 20.04 LTS:
  firefox                         81.0.2+build1-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         81.0.2+build1-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  firefox                         81.0.2+build1-0ubuntu0.16.04.1

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

References:
  https://usn.ubuntu.com/4546-2
  https://usn.ubuntu.com/4546-1
  https://launchpad.net/bugs/1900032

Package Information:

https://launchpad.net/ubuntu/+source/firefox/81.0.2+build1-0ubuntu0.20.04.1

https://launchpad.net/ubuntu/+source/firefox/81.0.2+build1-0ubuntu0.18.04.1

https://launchpad.net/ubuntu/+source/firefox/81.0.2+build1-0ubuntu0.16.04.1


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