Wednesday, October 22, 2014

Ubuntu 15.04 named as Vivid Vervet

Ubuntu is one of the most popular Linux distributions. I personally use Ubuntu 14.04 with my Dell Inspiron Laptop. I changed from Windows Vista to Ubuntu long back. So far so good. I get most of the things done with Ubuntu (without restarting). And you will get a lot of help online. From community and open source forums. Isn't cool?

Wednesday, October 15, 2014

Bash Code Injection Vulnerability and Fix

Bash Code injection Vulnerability is a bug in Bash. According to Redhat, this vulnerability CVE-2014-6271 could allow for arbitrary code execution. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue. In this post we will see how to check whether our systems are affected by this particular bug or not and if affected then how to solve it.

Sunday, October 12, 2014

creating ppk key from pem

For the people who use Amazon Web Services and EC2 or those who use ssh keys to log in to the Linux or UNIX systems using putty will have to convert .pem keys to ppk (putty private key). To create pem from ppk check here.

Here is how we do it in Windows platform:
We need to use a software called PuttyGen. Download it from here.

PuTTY Download Page

Double click on the downloaded puttygen. Its binary executable. We dont need to install it.