Remote code execution in Adobe Flash Player

Published: 2016-06-14 | Updated: 2017-02-13
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2016-4171
CWE ID CWE-119
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Adobe Flash Player Subscribe
Adobe Flash Player Extended Support Release
Adobe Flash Player for Linux
Vendor Adobe

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Memory corruption

Severity: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2016-4171

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling .swf files. A remote attacker can create a specially crafted SWF file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.


Mitigation

Update your Flash Player to the latest version.

  • Adobe recommends users of the  Adobe Flash Player Desktop Runtime for Windows and Macintosh update to 22.0.0.192 via the update mechanism within the product when prompted [1], or by visiting the Adobe Flash Player Download Center.
  • Adobe recommends users of the Adobe Flash Player Extended Support Release should update to version 18.0.0.360 by visiting http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html.
  • Adobe recommends users of Adobe Flash Player for Linux update to Adobe Flash Player 11.2.202.626 by visiting the Adobe Flash Player Download Center.
  • Adobe Flash Player installed with Google Chrome will be automatically updated to the latest Google Chrome version, which will include Adobe Flash Player 22.0.0.192 for Windows, Macintosh, Linux and Chrome OS.
  • Adobe Flash Player installed with Microsoft Edge and Internet Explorer for Windows 10 and 8.1 will be automatically updated to the latest version, which will include Adobe Flash Player 22.0.0.192. 
  • Please visit the Flash Player Help page for assistance in installing Flash Player.

Vulnerable software versions

Adobe Flash Player: 21.0.0.182, 21.0.0.197, 21.0.0.213, 21.0.0.216, 21.0.0.226, 21.0.0.241, 21.0.0.242, 22.0.0.192

Adobe Flash Player Extended Support Release: 18.0.0.268, 18.0.0.324, 18.0.0.326, 18.0.0.329, 18.0.0.333, 18.0.0.343, 18.0.0.352, 18.0.0.360, 18.0.0.366, 18.0.0.375

Adobe Flash Player for Linux: 11.2.202.238, 11.2.202.261, 11.2.202.262, 11.2.202.270, 11.2.202.273, 11.2.202.327, 11.2.202.332, 11.2.202.335, 11.2.202.336, 11.2.202.341, 11.2.202.350, 11.2.202.356, 11.2.202.418, 11.2.202.424, 11.2.202.425, 11.2.202.429, 11.2.202.438, 11.2.202.438, 11.2.202.440, 11.2.202.440, 11.2.202.442, 11.2.202.451, 11.2.202.457, 11.2.202.466, 11.2.202.468, 11.2.202.481, 11.2.202.491, 11.2.202.535, 11.2.202.540, 11.2.202.554, 11.2.202.559, 11.2.202.569, 11.2.202.616, 11.2.202.621, 11.2.202.626

CPE External links

https://helpx.adobe.com/security/products/flash-player/apsa16-03.html
https://helpx.adobe.com/security/products/flash-player/apsb16-18.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.