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Security: Buttercup, Container Labeling, Serendipity and Security Updates

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Security
  • Buttercup – A Free, Secure And Cross-platform Password Manager

    In this modern Internet era, you will surely have multiple accounts on lot of websites. It could be a personal or official mail account, social or professional network account, GitHub account, and ecommerce account etc. So you should have several different passwords for different accounts. I am sure that you are already aware that setting up same password to multiple accounts is crazy and dangerous practice. If an attacker managed to breach one of your accounts, it’s highly likely he/she will try to access other accounts you have with the same password. So, it is highly recommended to set different passwords to different accounts.

  • Container Labeling

    Container policy is defined in the container-selinux package. By default containers run with the SELinux type "container_t" whether this is a container launched by just about any container engine like: podman, cri-o, docker, buildah, moby. And most people who use SELinux with containers from container runtimes like runc, systemd-nspawn use it also.

    By default container_t is allowed to read/execute labels under /usr, read generically labeled content in the hosts /etc directory (etc_t).

    The default label for content in /var/lib/docker and /var/lib/containers is container_var_lib_t, This is not accessible by containers, container_t, whether they are running under podman, cri-o, docker, buildah ... We specifically do not want containers to be able to read this content, because content that uses block devices like devicemapper and btrfs(I believe) is labeled container_var_lib_t, when the containers are not running.

    For overlay content we need to allow containers to read/execute the content, we use the type container_share_t, for this content. So container_t is allowed to read/execute container_share_t files, but not write/modify them.

  • How my personal Bug Bounty Program turned into a Free Security Audit for the Serendipity Blog

    This blog and two other sites in scope use Serendipity (also called S9Y), a blog software written in PHP. Through the bug bounty program I got reports for an Open Redirect, an XSS in the start page, an XSS in the back end, an SQL injection in the back end and another SQL injection in the freetag plugin. All of those were legitimate vulnerabilities in Serendipity and some of them quite severe. I forwarded the reports to the Serendipity developers.

    Fixes are available by now, the first round of fixes were released with Serendipity 2.1.3 and another issue got fixed in 2.1.4. The freetag plugin was updated to version 2.69. If you use Serendipity please make sure you run the latest versions.

  • Security updates for Monday

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

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.