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Security Leftovers

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  • In Rust we trust: Shoring up Apache, ISRG ditches C, turns to wunderkind lang for new TLS crypto module • The Register

    At almost 26 years old, the Apache HTTP Server, known as httpd, has a memory problem: it is written in C, a language known among other things for its lack of memory safety.

    C requires programmers to pretty much manage computer memory themselves, which they don't always do very well. And poor memory management can lead to memory errors like buffer overflows, null pointer dereferencing, and use-after-free() issues. The recent Libgcrypt bug offers an example of how C code snafus can cause problems.

    The httpd server has had memory safety bugs before, and because it's still widely used, accounting for about a third of the web servers, the Internet Security Research Group (ISRG) has decided to institute a repair program.

    [...]

    "We currently live in a world where deploying a few million lines of C code on a network edge to handle requests is standard practice, despite all of the evidence we have that such behavior is unsafe," said executive director Josh Aas in a blog post seen ahead of publication by The Register. "Our industry needs to get to a place where deploying code that isn’t memory safe to handle network traffic is widely understood to be dangerous and irresponsible."

  • Latest macOS Big Sur also has SUDO root privilege escalation flaw [Ed: Conflating operating systems or kernels with pertinent tools like sudo means that there are more misleading headlines out there]
  • Sudo vulnerability in macOS could give root privileges to local users
  • Whitespace Steganography Conceals Web Shell in PHP Malware

    Last November, we wrote about how attackers are using JavaScript injections to load malicious code from legitimate CSS files.

    At first glance, these injections didn’t appear to contain anything except for some benign CSS rules. A more thorough analysis of the .CSS file revealed 56,964 seemingly empty lines containing combinations of invisible tab (0x09), space (0x20), and line feed (0x0A) characters, which were converted to binary representation of characters and then to the text of an executable JavaScript code.

    It didn’t take long before we found the same approach used in PHP malware. Here’s what our malware analyst Liam Smith discovered while recently working on a site containing multiple backdoors and webshells uploaded by hackers.

Sudo Bug Impacting macOS, Not Just Linux and BSD, Expert Says

  • Sudo Bug Impacting macOS, Not Just Linux and BSD, Expert Says

    Attackers don't require much to pull out the attack, as there is only one condition needed to exploit the bug: the attacker should have access to the system they want to hack.

    Unfortunately, this could be done easily by infecting the system with malware, or they could brute-force low-privileged service accounts.

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.