Cloudbleed aka Cloudleak is a bug in Cloudflare which is a CDN service, a proxy service, and a DNS provider… well to be honest cloudflare is a LOT of things these days and provides a freemium set of services, you can run your site using their DNS, proxy / CDN service for free or pay $20-$200, to get some interesting set of goodies. According to their own homepage: “Cloudflare speeds up and protects millions of websites, APIs, SaaS services, and other properties connected to the Internet. Our Anycast technology enables our benefits to scale with every server we add to our growing footprint of data centers.” They provide these services for ~6 Million websites, and recently a researcher at google found a critical flaw in cloudflare’s inhouse parser that may have leaked passwords and authentication tokens. Tavis Ormandy a self-described “Vulnerability researcher at Google” currently working for Google’s Project Zero which is a security initiative found a bug on February 18th. He posted an issue on Feb 19th. he tweeted looking for anyone from cloudflare security to get in touch with him. https://twitter.com/taviso/status/832744397800214528 Cloudflare people got back to him right away and they worked on solving this issue ASAP. Unfortunately, the issue may be as old as September 2016. Cloudflare released a statement letting us know that the larger issue started on February 13th when a code update meant one in every 3,300,300 HTTP requests potentially resulted in memory leakage which doesn’t mean anything until you realize the massive amount of information being passed through the Cloudflare network. […]