Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB16-29)

ITS Advisory Number: 
2016-154
Date(s) Issued: 
Tuesday, September 13, 2016
Subject: 
Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB16-29)
Overview: 

Multiple vulnerabilities have been discovered in Adobe Flash Player, the most severe of which 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 the most severe of these vulnerabilities could allow an attacker to execute remote code by luring a victim to visit a specially crafted malicious website. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • Adobe Flash Player Desktop Runtime prior to version 23.0.0.162
  • Adobe Flash Player Extended Support Release prior to version 18.0.0.375
  • Adobe Flash Player for Google Chrome prior to version 23.0.0.162
  • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 prior to version 23.0.0.162
  • Adobe Flash Player for Linux prior to version 11.2.202.635
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: 

Adobe Flash Player is prone to multiple vulnerabilities which could allow an attacker to take control of the affected system.

  • An integer overflow vulnerability that could lead to code execution (CVE-2016-4287).
  • Multiple use-after-free vulnerabilities that could lead to code execution (CVE-2016-4272, CVE-2016-4279, CVE-2016-6921, CVE-2016-6923, CVE-2016-6925, CVE-2016-6926, CVE-2016-6927, CVE-2016-6929, CVE-2016-6930, CVE-2016-6931, CVE-2016-6932).
  • Multiple security bypass vulnerabilities that could lead to information disclosure (CVE-2016-4271, CVE-2016-4277, CVE-2016-4278).
  • Multiple memory corruption vulnerabilities that could lead to code execution (CVE-2016-4182, CVE-2016-4237, CVE-2016-4238, CVE-2016-4274, CVE-2016-4275, CVE-2016-4276, CVE-2016-4280, CVE-2016-4281, CVE-2016-4282, CVE-2016-4283, CVE-2016-4284, CVE-2016-4285, CVE-2016-6922, CVE-2016-6924).

Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute remote code by luring a victim to visit a specially crafted malicious website. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 
  • After appropriate testing, apply 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.
References: 

Adobe:
https://helpx.adobe.com/security/products/flash-player/apsb16-29.html
 

CVE:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4182

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4237

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4238

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4271

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4272

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4274

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4275

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4276

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4277

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4278

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4279

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4280

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4281

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4282

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4283

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4284

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4285

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4287 

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6921

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6922

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6923

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6924

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6925

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6926

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6927

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6929

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6930

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6931

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6932