USN-3945-1: Ruby vulnerabilities

Packages

ruby1.9.1 - Object-oriented scripting language
ruby2.0 - Object-oriented scripting language
ruby2.3 - Object-oriented scripting language
ruby2.5 - Interpreter of object-oriented scripting language Ruby

Details

It was discovered that Ruby incorrectly handled certain RubyGems.
An attacker could possibly use this issue to execute arbitrary commands.
(CVE-2019-8320)

It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-8321, CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325)

It was discovered that Ruby incorrectly handled certain RubyGems.
An attacker could possibly use this issue to execute arbitrary commands.
(CVE-2019-8320)

It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-8321, CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

Ubuntu Release	Package Version
18.10 cosmic	libruby2.5 – 2.5.1-5ubuntu4.3
18.10 cosmic	ruby2.5 – 2.5.1-5ubuntu4.3
18.04 bionic	libruby2.5 – 2.5.1-1ubuntu1.2
18.04 bionic	ruby2.5 – 2.5.1-1ubuntu1.2
16.04 xenial	libruby2.3 – 2.3.1-2~16.04.12
16.04 xenial	ruby2.3 – 2.3.1-2~16.04.12
14.04 trusty	libruby1.9.1 – 1.9.3.484-2ubuntu1.14
	libruby2.0 – 2.0.0.484-1ubuntu2.13
	ruby1.9.1 – 1.9.3.484-2ubuntu1.14
	ruby1.9.3 – 1.9.3.484-2ubuntu1.14
	ruby2.0 – 2.0.0.484-1ubuntu2.13

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References