USN-5462-1: Ruby vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• ruby2.5 - Object-oriented scripting language
• ruby2.7 - Object-oriented scripting language
• ruby3.0 - Interpreter of object-oriented scripting language Ruby

Details

It was discovered that Ruby incorrectly handled certain regular expressions.
An attacker could possibly use this issue to execute arbitrary code. This
issue only affected Ubuntu 22.04 LTS. (2022-28738)

It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2022-28739)

Update instructions

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

Ubuntu 22.04

• ruby3.0 - 3.0.2-7ubuntu2.1
• libruby3.0 - 3.0.2-7ubuntu2.1

Ubuntu 21.10

• ruby2.7 - 2.7.4-1ubuntu3.2
• libruby2.7 - 2.7.4-1ubuntu3.2

Ubuntu 20.04

• ruby2.7 - 2.7.0-5ubuntu1.7
• libruby2.7 - 2.7.0-5ubuntu1.7

Ubuntu 18.04

• ruby2.5 - 2.5.1-1ubuntu1.12
• libruby2.5 - 2.5.1-1ubuntu1.12

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

References

• CVE-2022-28739
• CVE-2022-28738

Related notices

• USN-5462-2: libruby2.3, ruby2.3, ruby2.3-tcltk, ruby2.3-dev, ruby2.3-doc