sig-security
ostree
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sig-security | ostree | |
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20 | 41 | |
1,929 | 1,160 | |
2.0% | 3.5% | |
9.8 | 9.5 | |
1 day ago | 7 days ago | |
HTML | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
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sig-security
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Cloud Native Applications - Part 2: Security
Cloud Native Security Whitepaper
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Secure software supply chain: why every link matters
Fortunately, not every attack has a big enough impact to appear in the newspaper, but let’s analyze some of the most relevant and recent ones. Many other examples of different types of supply chain attacks are also collected by the CNCF in their Catalog of Supply Chain Compromises.
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Transparency and user agency as principles for distributing and consuming open source software packages
Hooks, triggers and other artifacts are regularly abused to achieve certain automation goals such as preseeding configuration or performing certain provisioning steps right after install, sometimes overreaching in terms of administrative privileges usage with broad security implications.
ostree
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NixOS Reproducible Builds: minimal ISO successfully independently rebuilt
Ansible makes mutable changes to the OS, task by task.
Nix is immutable. A new change is made entirely new, and only after the build is successful, all packages are "symlinked" to the current system.
Fedora Silverblue is based on ostree [1]. It works similarly like git, but on your root tree. But it requires you to reboot the whole system for the changes to take effect. Since Nix is just symlinked packages, you don't need to reboot the system.
More detailed explanation here [2].
[1]: https://github.com/ostreedev/ostree
[2]: https://dataswamp.org/~solene/2023-07-12-intro-to-immutable-...
- hello guys everytime i intall a flatpak on fedora this error always happnes how do i fix it
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PSA: Flatpaks are currently broken on Fedora. Here's a temporary solution.
This one is for the ostree bug currently ongoing: https://github.com/ostreedev/ostree/issues/2900
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ostree-system-generator failed with exit status 1 on every boot after update.
You're not using an OSTree-based system like Silverblue. The generator is supposed to exit cleanly in this case, but a recent change seems to have broken that. Other than the spurious error message, it should be harmless.
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What do you prefer more and why?
I definitely agree that immutability offers considerable value in regards to improving security. But arguably it's insufficient to pull the win over mutable Fedora due to the losses caused by the inability to install the kernel-hardened package and the lack of UKI (Unified Kernel Image) support.
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Question about immutability
Other hardening guides mention a Unified Kernel Image as another measure to further improve security. Unfortunately, once more, this is (currently) not supported on Fedora Silverblue. I haven't seen it being done on openSUSE Aeon either. Though, once again, I'd love to be corrected!
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Does an immutable system really provide enhanced security?
The fedora crew is working on it through ostree though, so both fedora Silverblue and flatpak will be getting it (as well as true immutability) in the future: https://github.com/ostreedev/ostree/issues/2867
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Silverblue/ Kinoite - real-life shortcomings?
Aside from what has already been mentioned, Unified Kernel Image isn't supported (yet).
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Experimenting with Migrating from Fedora Workstation to Fedora Silverblue
Unified Kernel Image
What are some alternatives?
rpm-ostree - ⚛📦 Hybrid image/package system with atomic upgrades and package layering
apt2ostree - Build ostree images based on Debian/Ubuntu
bubblewrap - Low-level unprivileged sandboxing tool used by Flatpak and similar projects
flatpak - Linux application sandboxing and distribution framework
waydroid - Waydroid uses a container-based approach to boot a full Android system on a regular GNU/Linux system like Ubuntu.
mkosi - 💽 Build Bespoke OS Images
pkg2appimage - Tool and recipes to convert existing deb packages to AppImage
cool-system - The Cloud Optimized Operational Lab (COOL) system
flathub - Issue tracker and new submissions
Ansible - Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy and maintain. Automate everything from code deployment to network configuration to cloud management, in a language that approaches plain English, using SSH, with no agents to install on remote systems. https://docs.ansible.com.
cyclonedx-gomod - Creates CycloneDX Software Bill of Materials (SBOM) from Go modules