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Vulnerability of Thunderbird: information disclosure via S/MIME Message Author Spoofing

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via S/MIME Message Author Spoofing of Thunderbird, in order to obtain sensitive information.
Impacted systems: Debian, Fedora, Thunderbird, openSUSE Leap, Slackware, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 27/09/2019.
Références of this alert: CVE-2019-11755, DLA-1997-1, DSA-4571-1, DSA-4571-2, FEDORA-2019-14af6fde2e, MFSA-2019-32, openSUSE-SU-2019:2248-1, openSUSE-SU-2019:2249-1, SSA:2019-268-01, SUSE-SU-2019:2515-1, USN-4202-2, VIGILANCE-VUL-30461.

Description of the vulnerability 

An attacker can bypass access restrictions to data via S/MIME Message Author Spoofing of Thunderbird, in order to obtain sensitive information.
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This cybersecurity alert impacts software or systems such as Debian, Fedora, Thunderbird, openSUSE Leap, Slackware, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this weakness is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this security weakness.

Solutions for this threat 

Thunderbird: version 68.1.1.
The version 68.1.1 is fixed:
  https://www.mozilla.org/

Debian 8: new thunderbird packages.
New packages are available:
  Debian 8: thunderbird 1:68.2.2-1~deb8u1

Debian 9/10: new thunderbird packages.
New packages are available:
  Debian 9: thunderbird 1:68.2.2-1~deb9u1
  Debian 10: thunderbird 1:68.2.2-1~deb10u1

Fedora 30: new thunderbird packages.
New packages are available:
  Fedora 30: thunderbird 68.1.1-1.fc30

openSUSE Leap 15: new MozillaThunderbird packages (07/10/2019).
New packages are available:
  openSUSE Leap 15.0: MozillaThunderbird 68.1.1-lp150.3.51.1
  openSUSE Leap 15.1: MozillaThunderbird 68.1.1-lp151.2.13.1

Slackware: new mozilla-thunderbird packages.
New packages are available:
  Slackware 14.2: mozilla-thunderbird 68.1.1-*-1_slack14.2

SUSE LE 15: new MozillaThunderbird packages (03/10/2019).
New packages are available:
  SUSE LE 15 RTM: MozillaThunderbird 68.1.1-3.51.1
  SUSE LE 15 SP1: MozillaThunderbird 68.1.1-3.51.1

Ubuntu: new thunderbird packages.
New packages are available:
  Ubuntu 19.10: thunderbird 1:68.2.2+build1-0ubuntu0.19.10.1
  Ubuntu 18.04 LTS: thunderbird 1:68.2.2+build1-0ubuntu0.18.04.1
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