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             AUSCERT External Security Bulletin Redistribution

                    USN-4299-1: Firefox vulnerabilities
                               12 March 2020


        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
                   Provide Misleading Information  -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-6815 CVE-2020-6814 CVE-2020-6813
                   CVE-2020-6812 CVE-2020-6811 CVE-2020-6810
                   CVE-2020-6809 CVE-2020-6808 CVE-2020-6807
                   CVE-2020-6806 CVE-2020-6805 CVE-2019-20503

Reference:         ESB-2020.0878

Original Bulletin: 

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

USN-4299-1: Firefox vulnerabilities
11 March 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


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


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, spoof the URL or other browser chrome,
obtain sensitive information, bypass Content Security Policy (CSP) protections,
or execute arbitrary code. (CVE-2019-20503, CVE-2020-6805, CVE-2020-6806,
CVE-2020-6807, CVE-2020-6808, CVE-2020-6810, CVE-2020-6812, CVE-2020-6813,
CVE-2020-6814, CVE-2020-6815)

It was discovered that Web Extensions with the all-url permission could access
local files. If a user were tricked in to installing a specially crafted
extension, an attacker could potentially exploit this to obtain sensitive
information. (CVE-2020-6809)

It was discovered that the Devtools' 'Copy as cURL' feature did not fully
escape website-controlled data. If a user were tricked in to using the 'Copy as
cURL' feature to copy and paste a command with specially crafted data in to a
terminal, an attacker could potentially exploit this to execute arbitrary
commands via command injection. (CVE-2020-6811)

Update instructions

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

Ubuntu 19.10
    firefox - 74.0+build3-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
    firefox - 74.0+build3-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
    firefox - 74.0+build3-0ubuntu0.16.04.1

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.


  o CVE-2019-20503
  o CVE-2020-6805
  o CVE-2020-6806
  o CVE-2020-6807
  o CVE-2020-6808
  o CVE-2020-6809
  o CVE-2020-6810
  o CVE-2020-6811
  o CVE-2020-6812
  o CVE-2020-6813
  o CVE-2020-6814
  o CVE-2020-6815

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