An exploit using Adobe Flash and JSONP has led Adobe to issue software patches.
Adobe released security updates to fix three critical vulnerabilities (CVE-2014-4671, CVE-2014-0537, CVE-2014-0539).
“Adobe has released security updates for Adobe Flash Player 220.127.116.11 and earlier versions for Windows and Macintosh and Adobe Flash Player 18.104.22.1688 and earlier versions for Linux. These updates address vulnerabilities that could potentially allow an attacker to take control of the affected system. Adobe recommends users update their product installations to the latest versions.” – Adobe.com
Michele Spagnuolo, a Google security engineer based in Zurich, developed a proof of concept tool called Rosetta Flash to show the vulnerability.
On his blog, Spagnolo wrote:
“Because of the sensitivity of this vulnerability, I first disclosed it internally in Google, and then privately to Adobe PSIRT. A few days before releasing the code and publishing this blog post, I also notified Twitter, eBay, Tumblr and Instagram.”
Spagnolo also notes that the issue has been well known in the infosec community. However, because there were no public tools for generating arbitrary ASCII-only valid SWF files, companies postponed taking action on the vulnerability until he developed his tool.
You should update your Adobe Flash Player as soon as possible.
Google Chrome and Microsoft Internet Explorer 10 and 11 will automatically update their versions of Adobe Flash.
All other browsers, e.g. FireFox, Safari, and Opera, should update their browsers using Adobe’s update tool.
Note that you need to update the Adobe Flash Player for every web browser that is installed on your system.