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Vulnerability of Ruby: information disclosure via sprintf

Synthesis of the vulnerability 

A local attacker can read a memory fragment via sprintf() of Ruby, in order to obtain sensitive information.
Impacted systems: Mac OS X, Debian, Fedora, Solaris, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 1/4.
Creation date: 19/09/2017.
Références of this alert: bulletinjan2019, CVE-2017-0898, DLA-1113-1, DLA-1114-1, DLA-1421-1, DSA-4031-1, FEDORA-2017-6e6f4f95e6, HT208937, HT209193, RHSA-2017:3485-01, RHSA-2018:0378-01, RHSA-2018:0583-01, RHSA-2018:0585-01, SSA:2017-261-03, SUSE-SU-2020:1570-1, USN-3439-1, USN-3685-1, USN-3685-2, VIGILANCE-VUL-23867.

Description of the vulnerability 

A local attacker can read a memory fragment via sprintf() of Ruby, in order to obtain sensitive information.
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This vulnerability announce impacts software or systems such as Mac OS X, Debian, Fedora, Solaris, RHEL, Slackware, 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 user shell.

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

Solutions for this threat 

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

Apple macOS: version 10.14.1.
The version 10.14.1 is fixed:
  https://support.apple.com/

Debian 7: new ruby1.8 packages.
New packages are available:
  Debian 7: ruby1.8 1.8.7.358-7.1+deb7u4

Debian 7: new ruby1.9.1 packages.
New packages are available:
  Debian 7: ruby1.9.1 1.9.3.194-8.1+deb7u6

Debian 8: new ruby2.1 packages (16/07/2018).
New packages are available:
  Debian 8: ruby2.1 2.1.5-2+deb8u4

Debian 9: new ruby2.3 packages.
New packages are available:
  Debian 9: ruby2.3 2.3.3-1+deb9u2

Fedora 26: new ruby packages.
New packages are available:
  Fedora 26: ruby 2.4.2-84.fc26

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 2.0.0.648-33.el7_4

RHEL: new rh-ruby22-ruby packages.
New packages are available:
  RHEL 6: rh-ruby22-ruby 2.2.9-19.el6
  RHEL 7: rh-ruby22-ruby 2.2.9-19.el7

RHEL: new rh-ruby23-ruby packages.
New packages are available:
  RHEL 6: rh-ruby23-ruby 2.3.6-67.el6
  RHEL 7: rh-ruby23-ruby 2.3.6-67.el7

RHEL: new rh-ruby24-ruby packages.
New packages are available:
  RHEL 6: rh-ruby24-ruby 2.4.2-86.el6
  RHEL 7: rh-ruby24-ruby 2.4.2-86.el7

Slackware: new ruby packages.
New packages are available:
  Slackware 14.2: ruby 2.2.8-*-1_slack14.2

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

Ubuntu: new ruby1 packages.
New packages are available:
  Ubuntu 14.04 LTS: ruby1.9.1 1.9.3.484-2ubuntu1.5

Ubuntu: new ruby packages (14/06/2018).
New packages are available:
  Ubuntu 17.10: ruby2.3 2.3.3-1ubuntu1.6
  Ubuntu 16.04 LTS: ruby2.3 2.3.1-2~16.04.10
  Ubuntu 14.04 LTS: ruby1.9.1 1.9.3.484-2ubuntu1.12, ruby1.9.3 1.9.3.484-2ubuntu1.12, ruby2.0 2.0.0.484-1ubuntu2.13+esm1
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