MS-ISAC CYBERSECURITY ADVISORIES
MS-ISAC ADVISORY NUMBER:
09/19/2016 - Updated
Multiple Vulnerabilities in Adobe Acrobat and Adobe Reader Could Allow for Arbitrary Code Execution (APSB16-26)
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.
There are currently no reports of these vulnerabilities being exploited in the wild.
• 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
• Large and medium government entities: High
• Small government entities: Medium
• Large and medium business entities: High
• Small business entities: Medium
Home users: Low
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).
• 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.
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.
September 19 - UPDATED REFERENCES: