How to fix OpenSSL Heartbleed vulnerability on CentOS

The Heartbleed Bug

The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet. SSL/TLS provides communication security and privacy over the Internet for applications such as web, email, instant messaging (IM) and some virtual private networks (VPNs).

The Heartbleed bug allows anyone on the Internet to read the memory of the systems protected by the vulnerable versions of the OpenSSL software. This compromises the secret keys used to identify the service providers and to encrypt the traffic, the names and passwords of the users and the actual content. This allows attackers to eavesdrop on communications, steal data directly from the services and users and to impersonate services and users.

See more info on heartbleed.com

How to fix it on CentOS

Simply execute:

sudo yum --enablerepo=updates install openssl openssh
sudo service httpd restart
sudo service nginx restart
sudo service sshd restart
There are plenty of online services where you can check if your host is infected or not, but be quick on fixing of the vulnerability as they can be collecting this information for their own use!






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