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Vulnerability of GnuTLS: information disclosure via Session Ticket Incorrect Cryptography

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Session Ticket Incorrect Cryptography of GnuTLS, in order to obtain sensitive information.
Impacted software: Debian, Fedora, openSUSE Leap, Solaris, RHEL, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 08/06/2020.
Références of this announce: bulletinoct2020, CVE-2020-13777, DSA-4697-1, FEDORA-2020-0cce3578e2, FEDORA-2020-4f78f122a3, FEDORA-2020-76b705bb63, FEDORA-2020-ea11cb5ccc, GNUTLS-SA-2020-06-03, openSUSE-SU-2020:0790-1, RHSA-2020:2637-01, RHSA-2020:2638-01, RHSA-2020:2639-01, USN-4384-1, VIGILANCE-VUL-32452.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Session Ticket Incorrect Cryptography of GnuTLS, in order to obtain sensitive information.
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This threat bulletin impacts software or systems such as Debian, Fedora, openSUSE Leap, Solaris, RHEL, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat bulletin 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 computer threat.

Solutions for this threat 

Debian 10: new gnutls28 packages.
New packages are available:
  Debian 10: gnutls28 3.6.7-4+deb10u4

Fedora 31-32: new mingw-gnutls packages.
New packages are available:
  Fedora 31: mingw-gnutls 3.6.14-1.fc31
  Fedora 32: mingw-gnutls 3.6.14-1.fc32

Fedora 31: new gnutls packages.
New packages are available:
  Fedora 31: gnutls 3.6.14-1.fc31

Fedora 32: new gnutls packages.
New packages are available:
  Fedora 32: gnutls 3.6.14-1.fc32

openSUSE Leap 15.1: new gnutls packages.
New packages are available:
  openSUSE Leap 15.1: gnutls 3.6.7-lp151.2.18.1

Oracle Solaris: patch for third party software of October 2020 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 8: new gnutls packages.
New packages are available:
  RHEL 8.0: gnutls 3.6.5-3.el8_0
  RHEL 8.1: gnutls 3.6.8-9.el8_1
  RHEL 8.2: gnutls 3.6.8-11.el8_2

Ubuntu: new libgnutls30 packages.
New packages are available:
  Ubuntu 20.04 LTS: libgnutls30 3.6.13-2ubuntu1.1
  Ubuntu 19.10: libgnutls30 3.6.9-5ubuntu1.2
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