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Security Leftovers

Submitted by Roy Schestowitz on Wednesday 13th of May 2020 03:40:49 PM Filed under
Security
  • Huawei Says Controversial Linux Kernel Patch Wasn’t Their Idea

    A Huawei engineer has decided to contribute a patch to the Linux kernel, trying to help bolster the security of the widely deployed open source project. The patch was called “Huawei kernel self protection” (HKSP), and it allegedly featured various security-hardening options for the Linux kernel. Thinking that this is coming from a controversial entity, the Linux kernel team thoroughly scrutinized the patch and found that it contains a “trivially exploitable vulnerability.” The discovery of that was the work of “GRSecurity,” an entity that has been contributing security hardening patches on Linux kernel for a long time now.

    GRSecurity has even provided a proof of concept (PoC) code on how to exploit the vulnerability as an unprivileged user. They called the HKSP patch a risk that creates new attack surface and introduces more problems than those it attempts to solve in the first place. Naturally, this discovery sparked rumors about the intention of the contributor, Huawei’s long-shot goal to try and weaken the security of the Linux kernel, and more. Huawei responded to this by saying that their employee contributed on his own and that the company had no involvement in this action whatsoever.

  • Understanding the DTLS all-zero ClientHello.random vulnerability

    A new vulnerability (CVE-2020-11501) has been discovered in the Datagram Transport Layer Security (DTLS) implementation in GnuTLS, where clients always send a fixed value (all-zero bytes) instead of random bytes in the first handshake message (ClientHello). The GnuTLS releases from 3.6.3 to 3.6.12 are affected by this vulnerability.

    This vulnerability impacts Red Hat Enterprise Linux 8 and has been rated as having a Moderate impact by Red Hat Product Security. A fix for this issue has been delivered as part of RHSA-2020:1998, shipped on April 30, 2020.

  • Securing Linux's master sysadmin command: Sudo

    Sudo is one of the most powerful and dangerous tools in the Unix or Linux system administrator's toolbox. With it, an ordinary user can run commands just as if he or she were the superuser or any other user. Now, One Identity, the company behind the utility, has released a new version of sudo, called sudo 1.9, which gives it better auditing, logging, and security than ever before.

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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.

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