Check Point Advisories

Ruby on Rails JSON Processor YAML Deserialization Code Execution - Ver2 (CVE-2013-0333)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1236
Date Published:	31 Mar 2014
Severity:	Critical
Last Updated:	Monday 31 March, 2014
Source:
Industry Reference:	CVE-2013-0333
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A code execution vulnerability has been reported in Ruby on Rails. The vulnerability is due to an input validation error when JSON Processor deserializes YAML. A remote unauthenticated attacker can exploit this vulnerability to execute arbitrary code within the context of the underlying web server.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Ruby on Rails JSON Processor YAML Deserialization Code Execution - Ver2 protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: HTTP Protocol Inspection.
Attack Information: Ruby on Rails JSON Processor YAML Deserialization Code Execution - Ver2