Zero-day vulnerability discovered affecting every version of Adobe’s Flash Player on all platforms

Security Advisory for Flash Player | APSA18-01
 
Summary

A critical vulnerability (CVE-2018-4878) exists in Adobe Flash Player 28.0.0.137 and earlier versions. Successful exploitation could potentially allow an attacker to take control of the affected system.

Adobe is aware of a report that an exploit for CVE-2018-4878 exists in the wild, and is being used in limited, targeted attacks against Windows users. These attacks leverage Office documents with embedded malicious Flash content distributed via email.

Adobe will address this vulnerability in a release planned for the week of February 5.

For the latest information, users may monitor the Adobe Product Security Incident Response Team blog.

Affected Product Versions
ProductVersionPlatform
Adobe Flash Player Desktop Runtime28.0.0.137 and earlier versionsWindows, Macintosh
Adobe Flash Player for Google Chrome28.0.0.137 and earlier versionsWindows, Macintosh, Linux and Chrome OS
Adobe Flash Player for Microsoft Edge and Internet Explorer 1128.0.0.137 and earlier versionsWindows 10 and 8.1
Adobe Flash Player Desktop Runtime28.0.0.137 and earlier versionsLinux

To verify the version of Adobe Flash Player installed on your system, access the About Flash Player page, or right- click on content running in Flash Player and select "About Adobe (or Macromedia) Flash Player" from the menu. If you use multiple browsers, perform the check for each browser you have installed on your system.

Mitigations

Beginning with Flash Player 27, administrators have the ability to change Flash Player's behavior when running on Internet Explorer on Windows 7 and below by prompting the user before playing SWF content. For more details, see this administration guide.

Administrators may also consider implementing Protected View for Office. Protected View opens a file marked as potentially unsafe in Read-only mode.

Vulnerability details
Vulnerability CategoryVulnerability ImpactSeverityCVE Number
Use-after-freeRemote Code ExecutionCriticalCVE-2018-4878
 
https://helpx.adobe.com/security/products/flash-player/apsa18-01.html