[USN-6838-1] Ruby vulnerabilities

[Marc Deslauriers]

==========================================================================
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

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