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Vulnerability of Sudo: privilege escalation via pwfeedback

Synthesis of the vulnerability 

An attacker can bypass restrictions via pwfeedback of Sudo, in order to escalate his privileges.
Impacted software: Mac OS X, Debian, Fedora, Junos Space, openSUSE Leap, Solaris, RHEL, Slackware, Sudo, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 31/01/2020.
Références of this announce: CVE-2019-18634, DLA-2094-1, DSA-4614-1, FEDORA-2020-8b563bc5f4, HT210919, JSA11110, openSUSE-SU-2020:0244-1, RHSA-2020:0487-01, RHSA-2020:0509-01, RHSA-2020:0540-01, RHSA-2020:0726-01, SSA:2020-031-01, SUSE-SU-2020:0390-1, SUSE-SU-2020:0406-1, SUSE-SU-2020:0407-1, SUSE-SU-2020:0408-1, SUSE-SU-2020:0409-1, USN-4263-1, USN-4263-2, VIGILANCE-VUL-31480.

Description of the vulnerability 

An attacker can bypass restrictions via pwfeedback of Sudo, in order to escalate his privileges.
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This cybersecurity vulnerability impacts software or systems such as Mac OS X, Debian, Fedora, Junos Space, openSUSE Leap, Solaris, RHEL, Slackware, Sudo, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

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

Solutions for this threat 

Sudo: version 1.8.31.
The version 1.8.31 is fixed:
  https://www.sudo.ws/download.html

Sudo: workaround for pwfeedback.
A workaround is to disable pwfeedback.

Apple macOS: version 10.13.6-2020-001.
The version 10.13.6-2020-001 is fixed:
  https://support.apple.com/

Apple macOS: version 10.14.6-2020-001.
The version 10.14.6-2020-001 is fixed:
  https://support.apple.com/

Apple macOS: version 10.15.3.
The version 10.15.3 is fixed:
  https://support.apple.com/

Debian 8: new sudo packages.
New packages are available:
  Debian 8: sudo 1.8.10p3-1+deb8u7

Debian 9: new sudo packages.
New packages are available:
  Debian 9: sudo 1.8.19p1-2.1+deb9u2

Fedora 31: new sudo packages.
New packages are available:
  Fedora 31: sudo 1.9.0-0.1.b1.fc31

Juniper Junos Space: version 20.3R1.
The version 20.3R1 is fixed:
  https://www.juniper.net/support/downloads/

openSUSE Leap 15.1: new sudo packages.
New packages are available:
  openSUSE Leap 15.1: sudo 1.8.22-lp151.5.6.1

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

RHEL 6.10: new sudo packages.
New packages are available:
  RHEL 6.10: sudo 1.8.6p3-29.el6_10.3

RHEL 7.7: new sudo packages.
New packages are available:
  RHEL 7.7: sudo 1.8.23-4.el7_7.2

RHEL 8.0: new sudo packages.
New packages are available:
  RHEL 8.0: sudo 1.8.25p1-4.el8_0.3

RHEL 8.1: new sudo packages.
New packages are available:
  RHEL 8.1: sudo 1.8.25p1-8.el8_1.1

Slackware: new sudo packages.
New packages are available:
  Slackware 14.0: sudo 1.8.31-*-1_slack14.0
  Slackware 14.1: sudo 1.8.31-*-1_slack14.1
  Slackware 14.2: sudo 1.8.31-*-1_slack14.2

SUSE LE 12 SP1: new sudo packages.
New packages are available:
  SUSE LE 12 SP1: sudo 1.8.10p3-2.32.1

SUSE LE: new sudo packages.
New packages are available:
  SUSE LE 12 SP2: sudo 1.8.10p3-10.26.1
  SUSE LE 12 SP3: sudo 1.8.20p2-3.17.1
  SUSE LE 12 SP4: sudo 1.8.20p2-3.17.1
  SUSE LE 12 SP5: sudo 1.8.27-4.3.1
  SUSE LE 15 RTM: sudo 1.8.22-4.9.1
  SUSE LE 15 SP1: sudo 1.8.22-4.9.1

Ubuntu: new sudo packages.
New packages are available:
  Ubuntu 19.10: sudo 1.8.27-1ubuntu4.1, sudo-ldap 1.8.27-1ubuntu4.1
  Ubuntu 18.04 LTS: sudo 1.8.21p2-3ubuntu1.2, sudo-ldap 1.8.21p2-3ubuntu1.2
  Ubuntu 16.04 LTS: sudo 1.8.16-0ubuntu1.9, sudo-ldap 1.8.16-0ubuntu1.9
  Ubuntu 14.04 ESM: sudo 1.8.9p5-1ubuntu1.5+esm3, sudo-ldap 1.8.9p5-1ubuntu1.5+esm3
  Ubuntu 12.04 ESM: sudo 1.8.3p1-1ubuntu3.9, sudo-ldap 1.8.3p1-1ubuntu3.9

Wind River Linux: version 10.17.41.20.
The version 10.17.41.20 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.18.44.15.
The version 10.18.44.15 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.19.45.6.
The version 10.19.45.6 is fixed:
  https://support2.windriver.com/
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