MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2016-104

DATE(S) ISSUED:
07/12/2016

SUBJECT:
Multiple Vulnerabilities in Adobe Flash Player Could Allow for Remote Code Execution (APSB16-25)

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.

 

THREAT INTELLIGENCE:

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

SYSTEMS AFFECTED INTELLIGENCE:

  • Adobe Flash Player Desktop Runtime prior to version 22.0.0.209
  • Adobe Flash Player Extended Support Release prior to version 18.0.0.366
  • Adobe Flash Player for Google Chrome prior to version 22.0.0.209
  • Adobe Flash Player for Microsoft Edge and Internet Explorer 11 prior to version 22.0.0.209
  • Adobe Flash Player for Linux prior to version 11.2.202.632

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 which could allow an attacker to take control of the affected system.


  • These updates resolve a race condition vulnerability that could lead to information disclosure (CVE-2016-4247).
  • These updates resolve type confusion vulnerabilities that could lead to code execution (CVE-2016-4223, CVE-2016-4224, CVE-2016-4225).
  • These updates resolve use-after-free vulnerabilities that could lead to code execution (CVE-2016-4173, CVE-2016-4174, CVE-2016-4222, CVE-2016-4226, CVE-2016-4227, CVE-2016-4228, CVE-2016-4229, CVE-2016-4230, CVE-2016-4231, CVE-2016-4248).
  • These updates resolve a heap buffer overflow vulnerability that could lead to code execution (CVE-2016-4249).
  • These updates resolve memory corruption vulnerabilities that could lead to code execution (CVE-2016-4172, CVE-2016-4175, CVE-2016-4179, CVE-2016-4180, CVE-2016-4181, CVE-2016-4182, CVE-2016-4183, CVE-2016-4184, CVE-2016-4185, CVE-2016-4186, CVE-2016-4187, CVE-2016-4188, CVE-2016-4189, CVE-2016-4190, CVE-2016-4217, CVE-2016-4218, CVE-2016-4219, CVE-2016-4220, CVE-2016-4221, CVE-2016-4233, CVE-2016-4234, CVE-2016-4235, CVE-2016-4236, CVE-2016-4237, CVE-2016-4238, CVE-2016-4239, CVE-2016-4240, CVE-2016-4241, CVE-2016-4242, CVE-2016-4243, CVE-2016-4244, CVE-2016-4245, CVE-2016-4246).
  • One spoofing vulnerability exists when a Microsoft Browser does not properly parse HTTP content (CVE-2016-3274)These updates resolve a memory leak vulnerability (CVE-2016-4232).
  • These updates resolve stack corruption vulnerabilities that could lead to code execution (CVE-2016-4176, CVE-2016-4177)
  • These updates resolve a security bypass vulnerability that could lead to information disclosure (CVE-2016-4178).

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.

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Install the updates provided by Adobe immediately after appropriate testing.
  • Consider disabling Adobe Flash Player until the patch is applied.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from untrusted 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/apsb16-25.html



CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4172
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4173
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4174
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4175
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4176
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4177
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4178
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4179
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4180
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4181
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4182
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4183
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4184
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4185
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4186
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4187
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4188
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4189
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4190
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4217
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4218
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4219
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4220
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4221
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4222
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4223
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4224
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4225
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4226
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4227
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4228
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4229
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4230
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4231
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4232
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4233
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4234
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4235
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4236
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4237
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4238
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4239
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4240
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4241
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4242
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4243
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4244
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4245
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4246
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4247
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4248
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4249