Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB18-05)

ITS Advisory Number: 
2018-028
Date(s) Issued: 
Tuesday, March 13, 2018
Subject: 
Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB18-05)
Overview: 

Multiple vulnerabilities have been discovered in Adobe Flash Player that could allow for remote code execution. 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 these vulnerabilities could result in the attacker gaining control of the affected system. 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 these vulnerabilities could have less impact than if it was configured with administrative rights.

THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

Systems Affected: 
  • Adobe Flash Player Desktop Runtime for Windows, Macintosh, and Linux versions 28.0.0.161 and earlier
  • Adobe Flash Player for Google Chrome versions 28.0.0.161 and earlier
  • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 versions 28.0.0.161 and earlier
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: 

Multiple vulnerabilities have been discovered in Adobe Flash Player that could allow for remote code execution. These vulnerabilities are as follows:

  • One use after free vulnerability that could allow for remote code execution (CVE-2018-4919).
  • One type confusion vulnerability that could allow for remote code execution (CVE-2018-4920)

Successful exploitation of these vulnerabilities could result in the attacker gaining control of the affected system. 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 these vulnerabilities could have less impact than if it was configured with administrative rights.

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.