Nginx

In many terminal text editors, you use find command as reference in Terminal commands - find.  How about find and replace.  This action depends on the specific text editor you're using in the terminal.  Here are a few common terminal text editors and how you can find and replace strings within them:

Vim

To find: Press / followed by the search term and then Enter.

To resolve the CVE-2022-48624 vulnerability on Ubuntu using Nginx, it's crucial to understand that the issue lies within the "less" package, not Nginx itself. The vulnerability affects "less" before version 606, where close_altfile in filename.c in less omits shell_quote calls for LESSCLOSE, potentially allowing shell command injection.

The current less version is 551, which is vulnerable. You'll need to upgrade "less" to a version at or beyond 606.

In an environment that is running

• Ubuntu 20.02
• Nginx
• Solr

The default Nginx conf is located /etc/nginx/sites-available/ and contains something similar to:

When logging into Ubuntu server you will see a response similar to

Adding an SSL wildcard certificate to an Ubuntu server involves several steps.  A wildcard certificate can secure subdomains of a domain with a single certificate. Here's a general outline of the process:

I'll be using an existing wildcard certificate.

sudo apt update && sudo apt upgrade -y

Focusing on the ckan.ini file (/etc/ckan/default/ckan.ini).  When I run the commands to recreate the database tables for CKAN:

cd /usr/lib/ckan/default/src/ckan
ckan -c /etc/ckan/default/ckan.ini db init

The response I'm getting is:

Finding the issue with a server 500 error

The Nginx error logs are showing too much detail.

Nginx logs and test

There are no errors in the nginx log and sudo nginx -t looks fine

sudo nginx -t

Response

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Listen in on the ports being used on your server.  To do so, run the command

netstat -a | grep tcp

If netstat is not install, then you'll be prompted to run the install script

sudo apt install net-tools

Response

Error with Nginx

When running an Nginx test, the following response was being presented:

Goal: Restrict content access through username and password entry on an Nginx server.

1: Apache Utilities Package

First, update your server’s package index:

sudo apt update

Check if the utilities package exists in your environment by executing the command

dpkg --get-selections | grep apache

Response: