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Vulnerability of Ruby: buffer overflow via encodes

Synthesis of the vulnerability 

An attacker can generate a buffer overflow via encodes() of Ruby, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Debian, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 20/04/2017.
Références of this computer vulnerability: CVE-2014-4975, DSA-3157-1, MDVSA-2014:225, MDVSA-2015:129, openSUSE-SU-2017:1128-1, RHSA-2014:1912-01, RHSA-2014:1913-01, RHSA-2014:1914-01, SUSE-SU-2017:1067-1, USN-2397-1, VIGILANCE-VUL-22519.

Description of the vulnerability 

An attacker can generate a buffer overflow via encodes() of Ruby, in order to trigger a denial of service, and possibly to run code.
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This computer vulnerability alert impacts software or systems such as Debian, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat alert 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 security vulnerability.

Solutions for this threat 

Debian: new ruby1.9.1 packages.
New packages are available:
  Debian 7: ruby1.9.1 1.9.3.194-8.1+deb7u3

Mandriva BS2: new ruby packages.
New packages are available:
  Mandriva BS2: ruby 2.0.0.p598-1.mbs2

Mandriva: new ruby packages.
New packages are available:
  Mandriva BS1: ruby 1.8.7.p374-1.mbs1

openSUSE Leap: new ruby2.1 packages.
New packages are available:
  openSUSE Leap 42.1: ruby2.1 2.1.9-10.2
  openSUSE Leap 42.2: ruby2.1 2.1.9-8.3.2

RHEL 7.0: new ruby packages.
New packages are available:
  RHEL 7: ruby 2.0.0.353-22.el7_0

RHEL: new ruby193-ruby packages.
New packages are available:
  RHEL 6: ruby193-ruby 1.9.3.484-50.el6
  RHEL 7: ruby193-ruby 1.9.3.484-50.el7

RHEL: new ruby200-ruby packages.
New packages are available:
  RHEL 6: ruby200-ruby 2.0.0.353-24.el6
  RHEL 7: ruby200-ruby 2.0.0.353-24.el7

SUSE LE 12: new ruby2.1 packages.
New packages are available:
  SUSE LE 12 SP1: ruby2.1 2.1.9-15.1
  SUSE LE 12 SP2: ruby2.1 2.1.9-15.1

Ubuntu: new Ruby packages.
New packages are available:
  Ubuntu 14.10: ruby2.0 2.0.0.484+really457-3ubuntu1.1, ruby2.1 2.1.2-2ubuntu1.1
  Ubuntu 14.04 LTS: ruby1.9.1 1.9.3.484-2ubuntu1.1, ruby2.0 2.0.0.484-1ubuntu2.1
  Ubuntu 12.04 LTS: ruby1.8 1.8.7.352-2ubuntu1.5, ruby1.9.1 1.9.3.0-1ubuntu2.9
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