[USN-6838-1] Ruby vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-6838-1
June 17, 2024

ruby2.7, ruby3.0, ruby3.1, ruby3.2 vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Ruby.

Software Description:
- ruby3.2: Object-oriented scripting language
- ruby3.1: Object-oriented scripting language
- ruby3.0: Object-oriented scripting language
- ruby2.7: Object-oriented scripting language

Details:

It was discovered that Ruby RDoc incorrectly parsed certain YAML files. If
a user or automated system were tricked into parsing a specially crafted
.rdoc_options file, a remote attacker could possibly use this issue to
execute arbitrary code. (CVE-2024-27281)

It was discovered that the Ruby regex compiler incorrectly handled certain
memory operations. A remote attacker could possibly use this issue to
obtain sensitive memory contents. (CVE-2024-27282)

Update instructions:

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

Ubuntu 24.04 LTS
libruby3.2 3.2.3-1ubuntu0.24.04.1
ruby3.2 3.2.3-1ubuntu0.24.04.1

Ubuntu 23.10
libruby3.1 3.1.2-7ubuntu3.2
ruby3.1 3.1.2-7ubuntu3.2

Ubuntu 22.04 LTS
libruby3.0 3.0.2-7ubuntu2.6
ruby3.0 3.0.2-7ubuntu2.6

Ubuntu 20.04 LTS
libruby2.7 2.7.0-5ubuntu1.13
ruby2.7 2.7.0-5ubuntu1.13

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

References:
https://ubuntu.com/security/notices/USN-6838-1
CVE-2024-27281, CVE-2024-27282

Package Information:
https://launchpad.net/ubuntu/+source/ruby3.2/3.2.3-1ubuntu0.24.04.1
https://launchpad.net/ubuntu/+source/ruby3.1/3.1.2-7ubuntu3.2
https://launchpad.net/ubuntu/+source/ruby3.0/3.0.2-7ubuntu2.6
https://launchpad.net/ubuntu/+source/ruby2.7/2.7.0-5ubuntu1.13