This vulnerability made it possible for attackers to execute arbitrary code on a vulnerable system. This vulnerability was patched in vim 8.2.
In March 2018, a critical vulnerability in the OpenSSL encryption library was announced. This vulnerability made it possible for attackers to execute arbitrary code on a vulnerable system. This vulnerability was patched in OpenSSL in version 1.0.2g in March 2018. This is likely the reason why the RedTeam Pentesting reported that some customers were still running insecure versions of OpenSSL in their environment. In this tutorial, we will be installing OpenSSL 1.0.2g on Ubuntu 16.04. You can follow the same process to upgrade OpenSSL on other versions of Ubuntu 16.04. OpenSSL is a widely used encryption library. It is used by many applications and services to protect network traffic, user data, and system data.
Installing OpenSSL on Ubuntu 16.04
What is OpenSSL?
OpenSSL is a widely used encryption library. It is used by many applications and services to protect network traffic, user data, and system data.
Install OpenSSL On Ubuntu 16.04
To install OpenSSL 1.0.2g on Ubuntu 16.04, do the following:
1. Update the repository index to show the latest package versions
sudo apt-get update
2. Install OpenSSL
sudo apt-get install libssl-dev libssl1.0-dev
3. Build and install the latest version of OpenSSL
tar xzf openssl-1.0.2g cd openssl-1.0 ./Configure -prefix /usr/local/openssl -no-shared -without-ssl3 -without-hwcap -no-zlib … make && make install
You will need a server running Ubuntu 16.04. You can use DigitalOcean, Amazon Web Services, or Microsoft Azure to run this tutorial.
You will need to install the curl tool on your system as well as the bc tool that is required for this process.
Install OpenSSL on Ubuntu 16.04
First, update the Ubuntu system using the following commands.
$ sudo apt-get update $ sudo apt-get upgrade
Next, install build-essential package and compile OpenSSL by running the following commands.
$ sudo apt-get install build-essential
$ cd /usr/src/
$ wget -c https://www.openssl.org/source/openssl-1.0.2g.tar.gz
$ tar xvf openssl-1.0.2g.tar
Now, run the following commands to create an SSL configuration file and move it to "/etc/ssl".
$ cd openssl-1.0.2g
Choose "yes.." when asked whether you want to use a configuration file or not because we will be editing this already created configuration later on in this tutorial to remove any warnings that might appear in the future if you don't do so first before compiling your software with it enabled (see below). Choose "yes" when asked whether you want to create a new version of this configuration file, just choose "no" for now as we need to edit this one later on instead of creating another one (see below). If you chose "no", skip down to step 7 where I show what you would have done if you did choose "no" instead of "yes". Next, generate a strong random key for the purpose of generating certificates