Rails.Development.Mode.secret_key_base.Remote.Code.Execution

Description

This indicates an attack attempt to exploit a Remote Code Execution vulnerability in Ruby on Rail.
The vulnerability is due to an error when the vulnerable software in development mode handles a maliciously crafted HTTP request. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted HTTP request.

Affected Products

Rail version 5.2.2.0 and prior
Rail version 6.0.0.beta2 and prior

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Upgrade to the latest version from the vendor.
https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/

References