1. Ubuntu Security Notices
  2. USN-4150-1

USN-4150-1: Thunderbird vulnerabilities

Publication date

8 October 2019

Overview

Several security issues were fixed in Thunderbird.

Releases

Packages

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

It was discovered that encrypted S/MIME parts in a multipart message can
leak plaintext contents when included in a HTML reply or forward in some
circumstances. If a user were tricked in to replying to or forwarding a
specially crafted message, an attacker could potentially exploit this to
obtain sensitive information. (CVE-2019-11739)

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 obtain sensitive
information, conduct cross-site scripting (XSS) attack, scause a denial
of service, or execute arbitrary code. (CVE-2019-11740, CVE-2019-11742,
CVE-2019-11743, CVE-2019-11744,

It was discovered that encrypted S/MIME parts in a multipart message can
leak plaintext contents when included in a HTML reply or forward in some
circumstances. If a user were tricked in to replying to or forwarding a
specially crafted message, an attacker could potentially exploit this to
obtain sensitive information. (CVE-2019-11739)

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 obtain sensitive
information, conduct cross-site scripting (XSS) attack, scause a denial
of service, or execute arbitrary code. (CVE-2019-11740, CVE-2019-11742,
CVE-2019-11743, CVE-2019-11744, CVE-2019-11746, CVE-2019-11752)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.04 disco thunderbird –  1:60.9.0+build1-0ubuntu0.19.04.1
18.04 bionic thunderbird –  1:60.9.0+build1-0ubuntu0.18.04.1
16.04 xenial thunderbird –  1:60.9.0+build1-0ubuntu0.16.04.2

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References

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