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