MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2017-013

DATE(S) ISSUED:
02/14/2017

SUBJECT:
Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB17-04)

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.

THREAT INTELLIGENCE:

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

SYSTEMS AFFECTED:

  • Adobe Flash Player Desktop Runtime versions 24.0.0.194 and earlier
  • Adobe Flash Player for Google Chrome versions 24.0.0.194 and earlier
  • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 versions 24.0.0.194 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:

Google Android OS is prone to multiple vulnerabilities, the most severe of which could allow for remote code execution. The vulnerabilities are as follows:

  • A type confusion vulnerability that could lead to code execution (CVE-2017-2995).
  • An integer overflow vulnerability that could lead to code execution (CVE-2017-2987).
  • Multiple use-after-free vulnerabilities that could lead to code execution (CVE-2017-2982, CVE-2017-2985, CVE-2017-2993, CVE-2017-2994)..
  • Multiple heap buffer overflow vulnerabilities that could lead to code execution (CVE-2017- 2984, CVE-2017-2986, CVE-2017-2992).
  • Multiple memory corruption vulnerabilities that could lead to code execution (CVE-2017-2988, CVE-2017-2990, CVE-2017-2991, CVE-2017-2996).

Successful exploitation of the most severe of these vulnerabilities could result in the attacker gaining control of the affected system.

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:

Adobe:

https://helpx.adobe.com/security/products/flash-player/apsb17-04.html

 

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2982

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2984

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2985

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2986

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2987

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2988

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2990

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2991

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2992

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2993

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2994

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2995

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2996