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Vulnerability of Ruby: information disclosure via OpenSSL-X509-Name Equality

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via OpenSSL::X509::Name Equality of Ruby, in order to obtain sensitive information.
Impacted software: Debian, Avamar, Fedora, McAfee Web Gateway, openSUSE Leap, Oracle Communications, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 29/10/2018.
Références of this announce: 534935, bulletinjan2019, cpujan2020, CVE-2018-16395, DLA-1558-1, DSA-2019-103, DSA-4332-1, FEDORA-2018-319b9d0f68, openSUSE-SU-2019:1771-1, RHSA-2018:3729-01, RHSA-2018:3730-01, RHSA-2018:3731-01, RHSA-2018:3738-01, RHSA-2019:1948-01, RHSA-2019:2565-01, SB10267, SUSE-SU-2019:1804-1, SUSE-SU-2020:1570-1, USN-3808-1, VIGILANCE-VUL-27628.

Description of the vulnerability 

An attacker can bypass access restrictions to data via OpenSSL::X509::Name Equality of Ruby, in order to obtain sensitive information.
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This cybersecurity weakness impacts software or systems such as Debian, Avamar, Fedora, McAfee Web Gateway, openSUSE Leap, Oracle Communications, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security vulnerability 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 vulnerability bulletin.

Solutions for this threat 

Debian 8: new ruby2.1 packages.
New packages are available:
  Debian 8: ruby2.1 2.1.5-2+deb8u6

Debian 9: new ruby2.3 packages.
New packages are available:
  Debian 9: ruby2.3 2.3.3-1+deb9u4

Dell EMC Avamar: solution for Ruby/OpenSSL.
The solution is indicated in information sources.

Fedora 29: new ruby packages.
New packages are available:
  Fedora 29: ruby 2.5.3-99.fc29

IBM: new ruby packages.
New packages are available:
  Ubuntu 18.10: ruby2.5 2.5.1-5ubuntu4.1
  Ubuntu 18.04 LTS: ruby2.5 2.5.1-1ubuntu1.1
  Ubuntu 16.04 LTS: ruby2.3 2.3.1-2~16.04.11
  Ubuntu 14.04 LTS: ruby1.9.1 1.9.3.484-2ubuntu1.13, ruby1.9.3 1.9.3.484-2ubuntu1.13, ruby2.0 2.0.0.484-1ubuntu2.11

McAfee Web Gateway: patch for OpenSSH/GnuTLS.
A patch is indicated in information sources.

openSUSE Leap: new ruby2.5 packages.
New packages are available:
  openSUSE Leap 15.0: ruby2.5 2.5.5-lp150.3.3.1
  openSUSE Leap 15.1: ruby2.5 2.5.5-lp151.4.3.1

Oracle Communications: CPU of January 2020.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2625594.1
  https://support.oracle.com/rs?type=doc&id=2626101.1
  https://support.oracle.com/rs?type=doc&id=2628576.1
  https://support.oracle.com/rs?type=doc&id=2626102.1
  https://support.oracle.com/rs?type=doc&id=2622427.1
  https://support.oracle.com/rs?type=doc&id=2595443.1
  https://support.oracle.com/rs?type=doc&id=2595442.1
  https://support.oracle.com/rs?type=doc&id=2617852.1
  https://support.oracle.com/rs?type=doc&id=2626103.1

Oracle Solaris: patch for third party software of January 2019 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.4: new ruby packages.
New packages are available:
  RHEL 7: ruby 2.0.0.648-34.el7_4

RHEL 7.5: new ruby packages.
New packages are available:
  RHEL 7: ruby 2.0.0.648-34.el7_5

RHEL 7.6: new ruby packages.
New packages are available:
  RHEL 7: ruby 2.0.0.648-34.el7_6

RHEL: new rh-ruby2x-ruby packages.
New packages are available:
  RHEL 6: rh-ruby23-ruby 2.3.8-69.el6, rh-ruby24-ruby 2.4.5-91.el6
  RHEL 7: rh-ruby25-ruby 2.5.3-6.el7

SUSE LE 12: new ruby2.1 packages.
New packages are available:
  SUSE LE 12 SP2: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP3: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP4: ruby2.1 2.1.9-19.3.2
  SUSE LE 12 SP5: ruby2.1 2.1.9-19.3.2

SUSE LE 15: new ruby2.5 packages.
New packages are available:
  SUSE LE 15 RTM: ruby2.5 2.5.5-4.3.1
  SUSE LE 15 SP1: ruby2.5 2.5.5-4.3.1

Wind River Linux: solution (28/11/2018).
The solution is indicated in information sources.
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