Vunerlability: https://www.openssl.org/news/secadv_20140605.txt
Patch for Ubuntu: https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu4
Report from Ubuntu: https://lists.ubuntu.com/archives/ubuntu-security-announce/2014-June/002532.html
Some helpful comments: https://news.ycombinator.com/item?id=7851357
OpenSSL branch release notes: https://www.openssl.org/news/openssl-1.0.1-notes.html