2013-02-11 Instructure Advisory IAC52874 - Rails Serialized Attribute, attr_protected and JSON Parsing Vulnerabilities

563

SECURITY UPDATE

Release Date:	2013-02-11 (Last update can be found below the document title)
Description:	Rails Serialized Attribute, attr_protected and JSON Parsing Vulnerabilities
Criticality Level:	Highly Critical ( Less Critical < Critical < Moderately Critical < Highly Critical )
Impact:	Manipulation of data Exposure of sensitive information Arbitrary code execution Denial of service
Systems Affected:	Canvas LMS
Solution Status:	Patched
Discovered By:	N/A
Relevant Changesets:	https://github.com/instructure/canvas-lms/commit/5af68ea3fa7153107be6a46334761efb5ac0ff61 https://github.com/instructure/canvas-lms/commit/36fa4321f405d670828056b8e17a683ddc656966 https://github.com/instructure/canvas-lms/commit/851adb150b6550ad439b35d0b1d9afd16dc28c3e

Summary:

Multiple vulnerabilities were discovered in the Ruby on Rails 2.x library that Canvas uses. Further information is available at https://groups.google.com/forum/#!forum/rubyonrails-security

Status:

Fixed in Canvas Cloud. Users of Canvas CV are encouraged to either update to the most recent stable code or apply the patches manually immediately.

CVE:

CVE-2013-0276, CVE-2013-0277, and CVE-2013-0269

About

Bio

Jordan has had various roles in the ed tech software (SAAS) industry for the past 9 years. (almost 5 years with Instructure). In his previous company he was a Client Services Manager for two years (responsible for account management, implementation, project management, and training, for each of his customers). After a year and a half he was commissioned to build a training department, all policies and procedures, and deliver training for all customers. Over the past eight years he has been in charge of conceiving, producing and deploying eLearning initiatives and strategies. He has trained over 3,000 adult learners with a wide range of technical aptitude, including K-12 Teachers, Principals, Administrators, Superintendents, Higher Ed Professors, Doctors, CTO’s, and Corporate Business Professionals and Executives. Jordan is an instructional designer and Community Manager for Instructure with a focus on connecting Canvas users with tools and resources that will help them get excited about and become proficient in utilizing the Canvas Learning Platform.