In this post I will cover briefly how to modify the memory of running process in real-time. The example chosen for this demonstration is simple. The main purpose is to show the approach rather than make it look sophisticated. However, you can take it as far as you wish, depending on your objectives. In future… Continue reading Targeted process injection – Linux
Tag: Linux
SSD / USB Drive Encryption – Linux
In this post, I will briefly cover encryption of SSD drives, removable hard drives and USB drives. Depending on your objectives you may need to tweak certain options to achieve stronger protection, if required. Before starting the process, it is necessary to connect the drive of your choice to your Linux system. If the drive… Continue reading SSD / USB Drive Encryption – Linux
CVE-2021-3156 Sudo Heap-based buffer overflow exploit
Key facts The CVE-2021-3156 vulnerability in sudo is an interesting heap-based buffer overflow condition that allows for privilege escalation on Linux and Mac systems, if the vulnerability is exploited successfully. The bug in sudo was disclosed by Qualys researchers on their blog/website which you can find here. All relevant details are listed there. Further technical… Continue reading CVE-2021-3156 Sudo Heap-based buffer overflow exploit
localectl – Keyboard related settings
“localectl” is a command allowing you to quickly verify the keyboard mappings settings on a Linux system and also modify the current configuration. There are times when password or known keyboard combinations do not work as expected. The first step for troubleshooting is to check what keyboard mappings and layout settings are in use on… Continue reading localectl – Keyboard related settings
ab – Apache benchmarking tool
“ab” is an Apache HTTP server benchmarking tool. Before probing further this type of server, first you need to determine some basic information about its configuration. There are multiple tools available for server fingerprinting. In this case, the tool is specifically made for Apache and it is installed by default in many Linux distributions. When… Continue reading ab – Apache benchmarking tool