MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2016-125

DATE(S) ISSUED:
09/19/2016 - Updated

SUBJECT:
Multiple Vulnerabilities in Adobe Acrobat and Adobe Reader Could Allow for Arbitrary Code Execution (APSB16-26)

ORIGINAL OVERVIEW:

Multiple vulnerabilities in Adobe Acrobat and Adobe Reader could allow for arbitrary code execution. Adobe Acrobat and Reader allow a user to view, create, manipulate, print and manage files in Portable Document Format (PDF). Successful exploitation could potentially allow an attacker to take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full system rights.

September 19 - UPDATED OVERVIEW:
Two additional vulnerabilities have been reported in Adobe Flash Player which could allow for arbitrary code execution.

THREAT INTELLIGENCE:

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

SYSTEM AFFECTED:

• Adobe Acrobat DC version 15.016.20045 and prior for Windows and Macintosh

• Acrobat Reader DC version 15.016.20045 and prior for Windows and Macintosh

• Acrobat DC version 15.006.30174 and prior for Windows and Macintosh

• Adobe Acrobat Reader DC version 15.006.30174 and prior for Windows and Macintosh

• Adobe Acrobat XI version 11.0.16 and prior Windows and Macintosh

• Adobe Reader XI version 11.0.16 and prior for Windows and Macintosh

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 Acrobat and Reader are prone to multiple vulnerabilities, the most severe of which could allow for arbitrary code execution. The vulnerabilities are as follows:

• Integer overflow vulnerability that could lead to code execution (CVE-2016-4210).

• Use-after-free vulnerability that could lead to code execution (CVE-2016-4255).

• Heap buffer overflow vulnerability that could lead to code execution (CVE-2016-4209).

• Bypass restrictions on Javascript API execution (CVE-2016-4215).

• Memory corruption vulnerabilities that could lead to code execution (CVE-2016-4254, CVE-2016-4191, CVE-2016-4192, CVE-2016-4193, CVE-2016-4194, CVE-2016-4195, CVE-2016-4196, CVE-2016-4197, CVE-2016-4198, CVE-2016-4199, CVE-2016-4200, CVE-2016-4201, CVE-2016-4202, CVE-2016-4203, CVE-2016-4204, CVE-2016-4205, CVE-2016-4206, CVE-2016-4207, CVE-2016-4208, CVE-2016-4211, CVE-2016-4212, CVE-2016-4213, CVE-2016-4214, CVE-2016-4250, CVE-2016-4251, CVE-2016-4252, CVE-2016-4265, CVE-2016-4266, CVE-2016-4267, CVE-2016-4268, CVE-2016-4269, CVE-2016-4270).

The most severe of these vulnerabilities could allow an attacker to execute arbitrary code. An attacker could then install programs; view, change, or delete data; or create new accounts with full system rights.

September 19 - UPDATED TECHNICAL SUMMARY:
Adobe Acrobat and Reader are prone to a memory corruption vulnerability (CVE-2016-6937) and a use-after-free vulnerability (CVE-2016-6938). Successful exploitation of these vulnerabilities could allow for arbitrary code execution.

RECOMMENDATIONS:

We recommend the following actions be taken:

• Apply appropriate patches provided by Adobe to vulnerable systems 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 untrusted sources.

REFERENCES:

Adobe:

https://helpx.adobe.com/security/products/acrobat/apsb16-26.html

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4191

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4192

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4193

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4194

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4195

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4196

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4197

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4198

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4199

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4200

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4201

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4202

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4203

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4204

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4205

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4206

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4207

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4208

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4209

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4210

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4211

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4212

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4213

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4214

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4215

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4250

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4251

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4252

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4254

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4255

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4265

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4266

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4267

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4268

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4269

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4270

 

September 19 - UPDATED REFERENCES:
CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6937
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6938