Dubbed “Heartbleed”, a vulnerability was discovered with OpenSSL. The vulnerability allows attackers to eavesdrop communications, steal data directly from the services and users and to impersonate services and users.
It’s advcised that you update your systems asap
When using CentOS/Redhat
You can check the version that you are currently running using the command
rpm -q openssl
If you are using the fixed version your version should be as follows
openssl-1.0.1e-16.el6_5.7.x86_64
if you are running an older version of openssl then you should update your system.
yum update openssl
For Debian systems
dpkg -l | grep openssl
If you are using the fixed version your version should be as follows
ii openssl 1.0.1e-2+deb7u6 amd64 Secure Socket Layer (SSL) binary and related cryptographic tools
if you are running an older version of openssl then you should update your system.
aptitude update
then run
aptitude upgrade openssl