Operating System:

[Ubuntu]

Published:

26 August 2021

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2884
                      USN-5037-2: Firefox regression
                              26 August 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Firefox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Reduced Security -- Existing Account
Resolution:        Patch/Upgrade

Reference:         ESB-2021.2734

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-5037-2

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-5037-2: Firefox regression
25 August 2021

USN-5037-1 caused a regression in Firefox.
Releases

  o Ubuntu 21.04
  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS

Packages

  o 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.

Update instructions

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

Ubuntu 21.04

  o firefox - 91.0.2+build1-0ubuntu0.21.04.1

Ubuntu 20.04

  o firefox - 91.0.2+build1-0ubuntu0.20.04.1

Ubuntu 18.04

  o 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.

References

  o https://launchpad.net/bugs/1941496

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
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The University of Queensland
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===========================================================================
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