Ubuntu 20.04: 4373-1 Critical: Thunderbird Code Execution

ubuntu

May 26, 2020

Several security issues were fixed in Thunderbird.

Summary

Several security issues were fixed in Thunderbird.

Software Description:

- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

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,

or execute arbitrary code. (CVE-2020-6831, CVE-2020-12387, CVE-2020-12395)

It was discovered that the Devtools’ ‘Copy as cURL’ feature did not

properly escape the HTTP POST data of a request. 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 obtain sensitive information from local files.

(CVE-2020-12392)

It was discovered that Thunderbird did not correctly handle Unicode

whitespace characters within the From email header. An attacker could

potentially exploit t...

Read the Full Advisory

Topics Covered

security advisory denial of service update code execution ubuntu thunderbird spoofing

Update Instructions

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

Ubuntu 20.04 LTS:
  thunderbird                     1:68.8.0+build2-0ubuntu0.20.04.2

Ubuntu 19.10:
  thunderbird                     1:68.8.0+build2-0ubuntu0.19.10.2

Ubuntu 18.04 LTS:
  thunderbird                     1:68.8.0+build2-0ubuntu0.18.04.2

Ubuntu 16.04 LTS:
  thunderbird                     1:68.8.0+build2-0ubuntu0.16.04.2

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