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A Vulnerability in Adobe Flash Player Could Allow for Arbitrary Code Execution (APSB20-30)

MS-ISAC ADVISORY NUMBER:

2020-080

DATE(S) ISSUED:

06/09/2020

OVERVIEW:

A vulnerability has been discovered in Adobe Flash Player, which could allow for arbitrary 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 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.

THREAT INTELLIGENCE:

There are no reports of this vulnerability being exploited in the wild.

SYSTEMS AFFECTED:

  • Adobe Flash Player Versions 32.0.0.101 through 32.0.0.371

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:
MEDIUM

TECHNICAL SUMMARY:

A use after free vulnerability has been discovered in Adobe Flash Player, which could allow for arbitrary code execution. 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.

RECOMMENDATIONS:

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.

REFERENCES:

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