USN-3945-1: Ruby vulnerabilities

ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 18.10
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Ruby.

Software Description

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

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)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10: libruby2.5 – 2.5.1-5ubuntu4.3; ruby2.5 – 2.5.1-5ubuntu4.3
Ubuntu 18.04 LTS: libruby2.5 – 2.5.1-1ubuntu1.2; ruby2.5 – 2.5.1-1ubuntu1.2
Ubuntu 16.04 LTS: libruby2.3 – 2.3.1-2~16.04.12; ruby2.3 – 2.3.1-2~16.04.12
Ubuntu 14.04 LTS: 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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

Source: USN-3945-1: Ruby vulnerabilities

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