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Vulnerability of Thunderbird: information disclosure via S/MIME Signature Spoofing

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via S/MIME Signature Spoofing of Thunderbird, in order to obtain sensitive information.
Vulnerable systems: Debian, Thunderbird, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 3/4.
Creation date: 15/02/2019.
Revision date: 02/05/2019.
Références of this weakness: CERTFR-2019-AVI-068, CVE-2018-18509, DLA-1678-1, DSA-4392-1, openSUSE-SU-2019:0249-1, openSUSE-SU-2019:0250-1, openSUSE-SU-2019:0251-1, openSUSE-SU-2019:1162-1, SSA:2019-045-01, SUSE-SU-2019:0469-1, SUSE-SU-2019:0853-1, USN-3897-1, VIGILANCE-VUL-28520.

Description of the vulnerability 

An attacker can bypass access restrictions to data via S/MIME Signature Spoofing of Thunderbird, in order to obtain sensitive information.
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This computer vulnerability impacts software or systems such as Debian, Thunderbird, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this weakness.

Solutions for this threat 

Thunderbird: version 60.5.1.
The version 60.5.1 is fixed:
  https://www.mozilla.org/

Debian 8: new thunderbird packages.
New packages are available:
  Debian 8: thunderbird 1:60.5.1-1~deb8u1

Debian 9: new thunderbird packages.
New packages are available:
  Debian 9: thunderbird 1:60.5.1-1~deb9u1

openSUSE Leap 15.0: new MozillaThunderbird packages (08/04/2019).
New packages are available:
  openSUSE Leap 15.0: MozillaThunderbird 60.6.1-lp150.3.37.1

openSUSE Leap 15.0: new MozillaThunderbird packages (27/02/2019).
New packages are available:
  openSUSE Leap 15.0: MozillaThunderbird 60.5.1-lp150.3.30.1

openSUSE Leap 42.3: new MozillaThunderbird packages.
New packages are available:
  openSUSE Leap 42.3: MozillaThunderbird 60.5.1-86.1

Slackware: new mozilla-thunderbird packages.
New packages are available:
  Slackware 14.2: mozilla-thunderbird 60.5.1-*-1_slack14.2

SUSE LE 12: new MozillaThunderbird packages.
New packages are available:
  SUSE LE 12 RTM-SP4: MozillaThunderbird 60.5.1-79.1

SUSE LE 15: new MozillaThunderbird packages (03/04/2019).
New packages are available:
  SUSE LE 15 RTM: MozillaThunderbird 60.6.1-3.28.1

SUSE LE 15: new MozillaThunderbird packages (25/02/2019).
New packages are available:
  SUSE LE 15 RTM: MozillaThunderbird 60.5.1-3.24.1

Ubuntu: new thunderbird packages.
New packages are available:
  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

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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