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             AUSCERT External Security Bulletin Redistribution

                  USN-3897-1: Thunderbird vulnerabilities
                             27 February 2019


        AusCERT Security Bulletin Summary

Product:           thunderbird
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Increased Privileges            -- Remote with User Interaction
                   Access Privileged Data          -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5785 CVE-2018-18509 CVE-2018-18505
                   CVE-2018-18501 CVE-2018-18500 CVE-2018-18356

Reference:         ASB-2019.0055

Original Bulletin: 

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USN-3897-1: Thunderbird vulnerabilities
26 February 2019

thunderbird vulnerabilities

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

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS
  o Ubuntu 14.04 LTS


Several security issues were fixed in Thunderbird.

Software Description

  o thunderbird - Mozilla Open Source mail and newsgroup client


A use-after-free was discovered in libical. If a user were tricked in to
opening a specially crafted ICS calendar file, an attacker could potentially
exploit this to cause a denial of service. (CVE-2016-5824)

Multiple 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, or execute arbitrary code.
(CVE-2018-18356, CVE-2018-18500, CVE-2019-5785)

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, gain additional
privileges by escaping the sandbox, or execute arbitrary code. (CVE-2018-18501,

An issue was discovered with S/MIME signature verification in some
circumstances. An attacker could potentially exploit this by spoofing
signatures for arbitrary content. (CVE-2018-18509)

Update instructions

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

Ubuntu 18.10
    thunderbird - 1:60.5.1+build2-0ubuntu0.18.10.1
Ubuntu 18.04 LTS
    thunderbird - 1:60.5.1+build2-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
    thunderbird - 1:60.5.1+build2-0ubuntu0.16.04.1
Ubuntu 14.04 LTS
    thunderbird - 1:60.5.1+build2-0ubuntu0.14.04.1

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-2016-5824
  o CVE-2018-18356
  o CVE-2018-18500
  o CVE-2018-18501
  o CVE-2018-18505
  o CVE-2018-18509
  o CVE-2019-5785

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