Today there were multiple vulnerabilities released in OpenSSL, a cryptographic library used by CloudFlare (and most sites on the Internet). There has been advance notice that an announcement would be forthcoming, although the contents of the vulnerabilities were kept closely controlled and shared only with major operating system vendors until
Inside Shellshock: How hackers are using it to exploit systems
On Wednesday of last week, details of the Shellshock bash bug emerged. This bug started a scramble to patch computers, servers, routers, firewalls, and other computing appliances using vulnerable versions of bash. CloudFlare immediately rolled out protection for Pro, Business, and Enterprise customers through our Web Application Firewall. On Sunday,
Answering the Critical Question: Can You Get Private SSL Keys Using Heartbleed?
Update: Below is what we thought as of 12:27pm UTC. To verify our belief we crowd sourced the investigation. It turns out we were wrong. While it takes effort, it is possible to extract private SSL keys. The challenge was solved by Software Engineer Fedor Indutny and Ilkka Mattila
Staying ahead of OpenSSL vulnerabilities
Today a new vulnerability was announced in OpenSSL 1.0.1 that allows an attacker to reveal up to 64kB of memory to a connected client or server (CVE-2014-0160). We fixed this vulnerability last week before it was made public. All sites that use CloudFlare for SSL have received this
CloudFlare Tips: Troubleshooting Common Problems
Debugging technical issues online can be tricky. There are many moving pieces; it can be an isolated network connection with the ISP, an issue with your server or one of CloudFlare's data centers could be temporarily having a problem.