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             AUSCERT External Security Bulletin Redistribution

                  USN-4328-1: Thunderbird vulnerabilities
                               14 April 2020


        AusCERT Security Bulletin Summary

Product:           Thunderbird
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Cross-site Scripting            -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-6825 CVE-2020-6822 CVE-2020-6821
                   CVE-2020-6820 CVE-2020-6819 CVE-2020-6814
                   CVE-2020-6812 CVE-2020-6811 CVE-2020-6807
                   CVE-2020-6806 CVE-2020-6805 CVE-2020-6800
                   CVE-2020-6798 CVE-2020-6795 CVE-2020-6794
                   CVE-2020-6793 CVE-2020-6792 CVE-2019-20503

Reference:         ASB-2020.0065

Original Bulletin: 

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

USN-4328-1: Thunderbird vulnerabilities
13 April 2020

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

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS


Several security issues were fixed in Thunderbird.

Software Description

  o thunderbird - Mozilla Open Source mail and newsgroup client


It was discovered that Message ID calculation was based on uninitialized data.
An attacker could potentially exploit this to obtain sensitive information.

Mutiple security issues were discovered in Thunderbird. If a user were tricked
in to opening a specially crafted message, an attacker could potentially
exploit these to cause a denial of service, obtain sensitive information, or
execute arbitrary code. (CVE-2020-6793, CVE-2020-6795, CVE-2020-6822)

It was discovered that if a user saved passwords before Thunderbird 60 and then
later set a master password, an unencrypted copy of these passwords would still
be accessible. A local user could exploit this to obtain sensitive information.

Multiple security issues were discovered in Thunderbird. If a user were tricked
in to opening a specially crafted website in a browsing context, an attacker
could potentially exploit these to cause a denial of service, conduct
cross-site scripting (XSS) attacks, obtain sensitive information, or execute
arbitrary code. (CVE-2019-20503, CVE-2020-6798, CVE-2020-6800, CVE-2020-6805,
CVE-2020-6806, CVE-2020-6807, CVE-2020-6812, CVE-2020-6814, CVE-2020-6819,
CVE-2020-6820, CVE-2020-6821, CVE-2020-6825)

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
    thunderbird - 1:68.7.0+build1-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
    thunderbird - 1:68.7.0+build1-0ubuntu0.18.04.1

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

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


  o CVE-2019-20503
  o CVE-2020-6792
  o CVE-2020-6793
  o CVE-2020-6794
  o CVE-2020-6795
  o CVE-2020-6798
  o CVE-2020-6800
  o CVE-2020-6805
  o CVE-2020-6806
  o CVE-2020-6807
  o CVE-2020-6811
  o CVE-2020-6812
  o CVE-2020-6814
  o CVE-2020-6819
  o CVE-2020-6820
  o CVE-2020-6821
  o CVE-2020-6822
  o CVE-2020-6825

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

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