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Vulnerability of wpa_supplicant: information disclosure via Brainpool Curves Timing Differences

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Brainpool Curves Timing Differences of wpa_supplicant, in order to obtain sensitive information.
Impacted systems: Debian, Fedora, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 1/4.
Creation date: 19/08/2019.
Références of this alert: CVE-2019-13377, DSA-4538-1, FEDORA-2019-97e9040197, openSUSE-SU-2020:2053-1, openSUSE-SU-2020:2059-1, SUSE-SU-2020:3380-1, SUSE-SU-2020:3424-1, USN-4098-1, VIGILANCE-VUL-30071.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Brainpool Curves Timing Differences of wpa_supplicant, in order to obtain sensitive information.
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This vulnerability announce impacts software or systems such as Debian, Fedora, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity threat is low.

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

An attacker with a expert ability can exploit this computer threat bulletin.

Solutions for this threat 

Debian 10: new wpa packages.
New packages are available:
  Debian 10: wpa 2:2.7+git20190128+0c1e29f-6+deb10u1

Fedora 30: new hostapd packages.
New packages are available:
  Fedora 30: hostapd 2.9-1.fc30

openSUSE Leap 15.1: new wpa_supplicant packages.
New packages are available:
  openSUSE Leap 15.1: wpa_supplicant 2.9-lp151.5.10.1

openSUSE Leap 15.2: new wpa_supplicant packages.
New packages are available:
  openSUSE Leap 15.2: wpa_supplicant 2.9-lp152.8.3.1

SUSE LE 12 SP5: new wpa_supplicant packages.
New packages are available:
  SUSE LE 12 SP5: wpa_supplicant 2.9-23.3.1

SUSE LE 15 RTM-SP2: new wpa_supplicant packages.
New packages are available:
  SUSE LE 15 RTM: wpa_supplicant 2.9-4.20.1
  SUSE LE 15 SP1: wpa_supplicant 2.9-4.20.1
  SUSE LE 15 SP2: wpa_supplicant 2.9-4.20.1

Ubuntu: new hostapd/wpasupplicant packages.
New packages are available:
  Ubuntu 19.04: hostapd 2:2.6-21ubuntu3.2, wpasupplicant 2:2.6-21ubuntu3.2
  Ubuntu 18.04 LTS: hostapd 2:2.6-15ubuntu2.4, wpasupplicant 2:2.6-15ubuntu2.4
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