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Vulnerability of wpasupplicant: NULL pointer dereference via eap_server_pwd.c, eap_pwd.c

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via eap_server_pwd.c, eap_pwd.c of wpasupplicant, in order to trigger a denial of service.
Vulnerable products: Debian, Fedora, FreeBSD, openSUSE Leap, pfSense, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 07/05/2019.
Références of this bulletin: CVE-2019-11555, DLA-1867-1, DSA-4450-1, FEDORA-2019-28d3ca93d2, FEDORA-2019-d6bc3771a4, FEDORA-2019-ff1b728d09, FreeBSD-SA-19:03.wpa, openSUSE-SU-2020:2053-1, openSUSE-SU-2020:2059-1, SUSE-SU-2020:3380-1, SUSE-SU-2020:3424-1, USN-3969-1, USN-3969-2, VIGILANCE-VUL-29244.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via eap_server_pwd.c, eap_pwd.c of wpasupplicant, in order to trigger a denial of service.
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This weakness alert impacts software or systems such as Debian, Fedora, FreeBSD, openSUSE Leap, pfSense, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

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

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

Solutions for this threat 

Debian 8: new wpa packages.
New packages are available:
  Debian 8: wpa 2.3-1+deb8u8

Debian 9: new wpa packages.
New packages are available:
  Debian 9: wpa 2:2.4-1+deb9u4

Fedora 30: new wpa_supplicant packages.
New packages are available:
  Fedora 30: wpa_supplicant 2.8-2.fc30

Fedora: new hostapd packages.
New packages are available:
  Fedora 29: hostapd 2.8-1.fc29
  Fedora 30: hostapd 2.8-1.fc30

FreeBSD: patch for wpa_supplicant.
A patch is available:
  FreeBSD 12.0: https://security.freebsd.org/patches/SA-19:03/wpa-12.patch
  FreeBSD 11.2: https://security.freebsd.org/patches/SA-19:03/wpa-11.patch

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

pfSense: version 2.4.4-p3.
The version 2.4.4-p3 is fixed.

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 wpasupplicant packages.
New packages are available:
  Ubuntu 19.04: hostapd 2:2.6-21ubuntu3.1, wpasupplicant 2:2.6-21ubuntu3.1
  Ubuntu 18.10: hostapd 2:2.6-18ubuntu1.2, wpasupplicant 2:2.6-18ubuntu1.2
  Ubuntu 18.04 LTS: hostapd 2:2.6-15ubuntu2.3, wpasupplicant 2:2.6-15ubuntu2.3
  Ubuntu 16.04 LTS: hostapd 2.4-0ubuntu6.5, wpasupplicant 2.4-0ubuntu6.5
  Ubuntu 14.04 ESM: hostapd 2.1-0ubuntu1.7+esm1, wpasupplicant 2.1-0ubuntu1.7+esm1

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