According cloudflare blog:
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 fix and are automatically protected.
[1]http://blog.cloudflare.com/staying-ahead-of-openssl-vulnerab...