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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1213
                    USN-4317-1: Firefox vulnerabilities
                               6 April 2020

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

Product:           Firefox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-6820 CVE-2020-6819 

Reference:         ESB-2020.1208
                   ESB-2020.1212

Original Bulletin: 
   https://usn.ubuntu.com/4317-1/

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USN-4317-1: Firefox vulnerabilities
4 April 2020

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

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

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

Software Description

  o firefox - Mozilla Open Source web browser

Details

Two use-after-free bugs were discovered in Firefox. If a user were tricked in
to opening a specially crafted website, an attacker could exploit these to
cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 19.10
    firefox - 74.0.1+build1-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
    firefox - 74.0.1+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
    firefox - 74.0.1+build1-0ubuntu0.16.04.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2020-6819
  o CVE-2020-6820

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