A Vulnerability in Adobe Flash Player Could Allow for Code Execution (APSB16-36)

ITS Advisory Number: 
2016-184
Date(s) Issued: 
Wednesday, October 26, 2016
Subject: 
A Vulnerability in Adobe Flash Player Could Allow for Code Execution (APSB16-36)
Overview: 

A use-after-free vulnerability has been discovered in Adobe Flash Player that could allow for code execution, potentially allowing an attacker to take control of the affected system. Adobe Flash Player is a widely distributed multimedia and application player used to enhance the user experience when visiting web pages or reading email messages. Successful exploitation of this vulnerability may allow an attacker to take control of the affected system potentially allowing the attacker to install programs; view, change, or delete data; or create new accounts with full user rights. Failed exploit attempts may result in denial-of-service conditions.

Systems Affected: 
  • Adobe Flash Player Desktop Runtime prior to version 23.0.0.205
  • Adobe Flash Player for Google Chrome prior to version 23.0.0.205
  • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 prior to version 23.0.0.205
  • Adobe Flash Player for Linux prior to version 11.2.202.643
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

A use-after-free vulnerability has been discovered in Adobe Flash Player that could allow for code execution, potentially allowing an attacker to take control of the affected system. Successful exploitation of this vulnerability may allow an attacker to take control of the affected system potentially allowing the attacker to install programs; view, change, or delete data; or create new accounts with full user rights. Failed exploit attempts may result in denial-of-service conditions. 

Actions: 
  • After appropriate testing, install the updates provided by Adobe.
  • 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.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.