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Vulnerability of Ruby: four vulnerabilities

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of Ruby.
Impacted products: Debian, Fedora, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this bulletin: 2/4.
Number of vulnerabilities in this bulletin: 4.
Creation date: 06/09/2017.
Références of this threat: CVE-2017-0899, CVE-2017-0900, CVE-2017-0901, CVE-2017-0902, DLA-1112-1, DLA-1114-1, DLA-1421-1, DSA-3966-1, FEDORA-2017-20214ad330, FEDORA-2017-e136d63c99, 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-3553-1, USN-3685-1, USN-3685-2, VIGILANCE-VUL-23733.

Description of the vulnerability 

Several vulnerabilities were announced in Ruby.

An unknown vulnerability was announced via Terminal Escape Sequences. [severity:1/4; CVE-2017-0899]

An attacker can trigger a fatal error via RubyGems Client, in order to trigger a denial of service. [severity:2/4; CVE-2017-0900]

An attacker can bypass access restrictions via RubyGems Client, in order to overwrite a file. [severity:2/4; CVE-2017-0901]

An attacker can bypass access restrictions via DNS Hijacking, in order to read or alter data. [severity:2/4; CVE-2017-0902]
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This vulnerability note impacts software or systems such as Debian, Fedora, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

This bulletin is about 4 vulnerabilities.

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

Solutions for this threat 

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

Debian 7: new rubygems packages.
New packages are available:
  Debian 7: rubygems 1.8.24-1+deb7u1

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+deb9u1

Fedora 25: new ruby packages.
New packages are available:
  Fedora 25: ruby 2.3.4-64.fc25

Fedora 26: new rubygems packages.
New packages are available:
  Fedora 26: rubygems 2.6.13-100.fc26

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.
New packages are available:
  Ubuntu 17.10: ruby2.3 2.3.3-1ubuntu1.3
  Ubuntu 16.04 LTS: ruby2.3 2.3.1-2~16.04.6

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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