[USN-6853-1] Ruby vulnerability

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==========================================================================
Ubuntu Security Notice USN-6853-1
June 26, 2024

ruby2.7, ruby3.0, ruby3.1 vulnerability
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Ruby could be made to crash or expose sensitive information login if it
processed certain strings.

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

Details:

It was discovered that Ruby incorrectly handled the ungetbyte and ungetc
methods. A remote attacker could use this issue to cause Ruby to crash,
resulting in a denial of service, or possibly obtain sensitive information.

Update instructions:

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

Ubuntu 23.10
libruby3.1 3.1.2-7ubuntu3.3
ruby3.1 3.1.2-7ubuntu3.3

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

Ubuntu 20.04 LTS
libruby2.7 2.7.0-5ubuntu1.14
ruby2.7 2.7.0-5ubuntu1.14

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

References:
https://ubuntu.com/security/notices/USN-6853-1
CVE-2024-27280

Package Information:
https://launchpad.net/ubuntu/+source/ruby3.1/3.1.2-7ubuntu3.3
https://launchpad.net/ubuntu/+source/ruby3.0/3.0.2-7ubuntu2.7
https://launchpad.net/ubuntu/+source/ruby2.7/2.7.0-5ubuntu1.14