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HomeResourcesAdvisoriesMultiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB17-23)

Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB17-23)

MS-ISAC ADVISORY NUMBER:

2017-072

DATE(S) ISSUED:

08/08/2017

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 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 the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

THREAT INTELLIGENCE:

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

SYSTEMS AFFECTED:

  • • Adobe Flash Player Desktop Runtime versions 26.0.0.137 and earlier
  • • Adobe Flash Player for Google Chrome versions 26.0.0.137 and earlier
  • • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 versions 26.0.0.137 and earlier

RISK:

Government:
  • Large and medium government entities: HIGH
  • Small government entities: MEDIUM
Businesses:
  • Large and medium business entities: HIGH
  • Small business entities: MEDIUM
Home Users:
LOW

TECHNICAL SUMMARY:

Adobe Flash Player is prone to multiple vulnerabilities, the most severe of which could allow for remote code execution.

  • A security bypass vulnerability that could lead to information disclosure (CVE-2017-3085).
  • A type confusion vulnerability that could lead to code execution (CVE-2017-3106).

Successful exploitation of the most severe 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 the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

RECOMENDATIONS:

We recommend the following actions be taken:

  • Install the updates provided by Adobe immediately after appropriate testing.
  • 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.

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