A Vulnerability in Adobe ColdFusion Could Allow for Arbitrary Code Execution (APSB19-14)

ITS Advisory Number: 
2019-025
Date(s) Issued: 
Monday, March 4, 2019
Subject: 
A Vulnerability in Adobe ColdFusion Could Allow for Arbitrary Code Execution (APSB19-14)
Overview: 

A vulnerability has been discovered in Adobe ColdFusion which could allow for arbitrary code execution. Adobe ColdFusion is a web application development platform. Successful exploitation of this vulnerability could result in an attacker executing arbitrary code in the context of the affected application. Depending on the privileges associated with this application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If this application has been configured to have fewer user rights on the system, exploitation of this vulnerability could have less impact than if it was configured with administrative rights.

Systems Affected: 
  • ColdFusion 2018 (Update 2 and earlier versions)
  • ColdFusion 2016 (Update 9 and earlier versions)
  • ColdFusion 11 (Update 17 and earlier versions)
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
Low
Description: 

A vulnerability has been discovered in Adobe ColdFusion which could allow for arbitrary code execution. Detail of the vulnerability is included below:

 

  • A file upload restriction bypass vulnerability that could allow to arbitrary code execution (CVE-2019-7816).

Successful exploitation of this vulnerability could result in an attacker executing arbitrary code in the context of the affected application. Depending on the privileges associated with this application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. If this application has been configured to have fewer user rights on the system, exploitation of this vulnerability could have less impact than if it was configured with administrative rights.

 

Note: This attack requires the ability to upload executable code to a web-accessible directory, and then execute that code via an HTTP request.  Restricting requests to directories where uploaded files are stored will mitigate this attack.

Actions: 
  • After appropriate testing, immediately install the updates provided by Adobe.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
  • Apply the Principle of Least Privilege to all systems and services.