Upgrade OpenSSL in Ubuntu and CentOS
Hope you know about openssl heartbleed bug. Don't know about, no problem go through it http://heartbleed.com/ . The point here is you should upgrade your openssl. Because of this bug all linux variants release the patch for openssl. Here the steps for upgrade openssl both ubuntu and centos.
How to find I am using affected version...?
Run this command
openssl version -a
There you can find "built on" date. If that date is older than Apr 7. Then you are using older version. You should upgrade your version.
OpenSSL 1.0.1 14 Mar 2012 built on: Wed Jan 8 20:45:51 UTC 2014
Same as above.
How to upgrade openssl..?
sudo apt-get update sudo apt-get install libssl1.0.0 openssl -y
sudo yum update sudo yum update openssl -y