Two highly dangerous OpenSSL security bugs have been patched
The OpenSSL cryptographic library is used to provide Secure-Socket Layer (SSL) and Transport Layer Security (TLS) in many popular web sites. These include Twitter, GitHub, Yahoo, Tumblr, Steam, and DropBox.
OpenSSL isn’t just used in web sites. OpenVPN, an open-source virtual private network, and older versions of the secure login and terminal program OpenSSH, use OpenSSL.