USN-4045-1: Thunderbird vulnerabilities

1 July 2019

thunderbird vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Several security issues were fixed in Thunderbird.

Software Description

  • thunderbird - Mozilla Open Source mail and newsgroup client


A type confusion bug was discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could exploit this by causing a denial of service, or executing arbirary code. (CVE-2019-11707)

It was discovered that a sandboxed child process could open arbitrary web content in the parent process via the Prompt:Open IPC message. When combined with another vulnerability, an attacker could potentially exploit this to execute arbitrary code. (CVE-2019-11708)

Update instructions

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

Ubuntu 19.04
thunderbird - 1:60.7.2+build2-0ubuntu0.19.04.1
Ubuntu 18.10
thunderbird - 1:60.7.2+build2-0ubuntu0.18.10.1
Ubuntu 18.04 LTS
thunderbird - 1:60.7.2+build2-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
thunderbird - 1:60.7.2+build2-0ubuntu0.16.04.1

To update your system, please follow these instructions:

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