Project Description
The token revoker aims to scan git repos for exposed rancher tokens. Once a token has been identified, the revoker can (based on configuration) warn/disable/delete the exposed token automatically.
Features:
- Warn/Disable/Delete when an exposed token is detected
- Specify specific repos that you want to watch for exposed tokens
- Scan private/public repos
Design Overview:
- Deployed as a helm chart
- Configuration option for action to be taken on token exposure (warn, disable, delete)
- Custom CRD for repos that the revoker will watch ("watchRepo"/name TBD)
- Each time a new "watchRepo" is created, we spin off a go routine which, every 5/10/30 seconds (interval TBD, possibly customizable by user in the CRD or in the chart) scans the repo for exposed tokens.
- watchRepo should also store configuration allowing the revoker to access private repos (probably a reference to a secret containing ssh key allowing access)
- The actual logic to scan for a secret should probably utilize an established opensource project such as https://github.com/zricethezav/gitleaks . We can also contribute upstream by adding a pattern for rancher tokens, allowing a wider benefit to the work done for this project.
Goal for this Hackweek
Basic Goals:
- Warn/Disable/Delete when an exposed token is detected
- Scan public and private repos
- Helm chart/CRD allowing install/use of basic functionality
Stretch Goals:
- Scan/specify organizations for larger git providers (i.e. scan an entire Github/Gitlab org)
- Scan Output of CI pipelines (probably for popular providers like drone/travis/circle-ci/github-actions/gitlab-runners)
Resources
Upstream project that we can utilize for some of our functionality: https://github.com/zricethezav/gitleaks
Looking for hackers with the skills:
This project is part of:
Hack Week 22
Activity
Comments
-
-
about 2 years ago by mbolot | Reply
End of Hack Week update: I was able to get done with all basic goals and the github org scanning stretch goal, meaning that the revoker can:
- Warn/disable/delete exposed tokens
- Scan public/private repos (over https or ssh)
- Can be installed using helm
- Can scan entire github organizations.
Similar Projects
toptop - a top clone written in Go by dshah
Description
toptop
is a clone of Linux's top
CLI tool, but written in Go.
Goals
Learn more about Go (mainly bubbletea) and Linux
Resources
ddflare: (Dynamic)DNS management via Cloudflare API in Kubernetes by fgiudici
Description
ddflare is a project started a couple of weeks ago to provide DDNS management using v4 Cloudflare APIs: Cloudflare offers management via APIs and access tokens, so it is possible to register a domain and implement a DynDNS client without any other external service but their API.
Since ddflare allows to set any IP to any domain name, one could manage multiple A and ALIAS domain records. Wouldn't be cool to allow full DNS control from the project and integrate it with your Kubernetes cluster?
Goals
Main goals are:
- add containerized image for ddflare
- extend ddflare to be able to add and remove DNS records (and not just update existing ones)
- add documentation, covering also a sample pod deployment for Kubernetes
- write a ddflare Kubernetes operator to enable domain management via Kubernetes resources (using kubebuilder)
Available tasks and improvements tracked on ddflare github.
Resources
- https://github.com/fgiudici/ddflare
- https://developers.cloudflare.com/api/
- https://book.kubebuilder.io
A CLI for Harvester by mohamed.belgaied
[comment]: # Harvester does not officially come with a CLI tool, the user is supposed to interact with Harvester mostly through the UI [comment]: # Though it is theoretically possible to use kubectl to interact with Harvester, the manipulation of Kubevirt YAML objects is absolutely not user friendly. [comment]: # Inspired by tools like multipass from Canonical to easily and rapidly create one of multiple VMs, I began the development of Harvester CLI. Currently, it works but Harvester CLI needs some love to be up-to-date with Harvester v1.0.2 and needs some bug fixes and improvements as well.
Project Description
Harvester CLI is a command line interface tool written in Go, designed to simplify interfacing with a Harvester cluster as a user. It is especially useful for testing purposes as you can easily and rapidly create VMs in Harvester by providing a simple command such as:
harvester vm create my-vm --count 5
to create 5 VMs named my-vm-01
to my-vm-05
.
Harvester CLI is functional but needs a number of improvements: up-to-date functionality with Harvester v1.0.2 (some minor issues right now), modifying the default behaviour to create an opensuse VM instead of an ubuntu VM, solve some bugs, etc.
Github Repo for Harvester CLI: https://github.com/belgaied2/harvester-cli
Done in previous Hackweeks
- Create a Github actions pipeline to automatically integrate Harvester CLI to Homebrew repositories: DONE
- Automatically package Harvester CLI for OpenSUSE / Redhat RPMs or DEBs: DONE
Goal for this Hackweek
The goal for this Hackweek is to bring Harvester CLI up-to-speed with latest Harvester versions (v1.3.X and v1.4.X), and improve the code quality as well as implement some simple features and bug fixes.
Some nice additions might be: * Improve handling of namespaced objects * Add features, such as network management or Load Balancer creation ? * Add more unit tests and, why not, e2e tests * Improve CI * Improve the overall code quality * Test the program and create issues for it
Issue list is here: https://github.com/belgaied2/harvester-cli/issues
Resources
The project is written in Go, and using client-go
the Kubernetes Go Client libraries to communicate with the Harvester API (which is Kubernetes in fact).
Welcome contributions are:
- Testing it and creating issues
- Documentation
- Go code improvement
What you might learn
Harvester CLI might be interesting to you if you want to learn more about:
- GitHub Actions
- Harvester as a SUSE Product
- Go programming language
- Kubernetes API
Cluster API Add-on Provider for Kubewarden by csalas
Description
Can we integrate Kubewarden with Cluster API provisioning?
Cluster API is a Kubernetes project focused on providing declarative APIs and tooling to simplify provisioning, upgrading, and operating multiple Kubernetes clusters. TLDR; CAPI let's you define Kubernetes clusters in plain YAML, and CAPI providers (infrastructure, control plane/bootstrap, etc.) manage provisioning and configuration for you.
What if we could create an add-on provider that automatically installs Kubewarden and deploys Policy Servers to CAPI clusters?
Goals
- As a user I'd like to set a cluster (or list of clusters) and have the provider install Kubewarden for me.
- As a user I'd like to set what policies must be enforced for a cluster (or list of clusters).
Resources
- Cluster API: https://cluster-api.sigs.k8s.io/
- Kubewarden: https://docs.kubewarden.io/
Hack on rich terminal user interfaces by amanzini
Description
TUIs (Textual User Interface) are a big classic of our daily workflow. Many linux users 'live' in the terminal and modern implementations have a lot to offer : unicode fonts, 24 bit colors etc.
Goals
- Explore the current available solution on modern languages and implement a PoC , for example a small maze generator, porting of a classic game or just display the HackWeek cute logo.
- Practice some Go / Rust coding and programming patterns
- Fiddle around, hack, learn, have fun
- keep a development diary, practice on project documentation
Follow this link for source code repository
- includes development diary
Some ideas for inspiration:
- https://github.com/coding-horror/basic-computer-games
- https://git.imzadi.de/acn/vt100-games
- https://github.com/skx/lighthouse-of-doom
- https://github.com/rothgar/awesome-tuis
- https://www.zq1.de/~bernhard/images/share/geeko/logo.txt
Related projects:
Resources
Python:
Go:
Rust:
Misc:
Longhorn UI Extension (POC) by yiya.chen
Description
The goal is to create a Longhorn UI extension within Rancher using existing resources.
Longhorn’s UI is built using React, while Rancher’s UI extensions are built using Vue. Developers will explore different approaches to integrate and extend Longhorn’s UI within Rancher’s Vue-based ecosystem, aiming to create a seamless, functional UI extension.
Goals
- Build a Longhorn UI extension (look and feel)
- Support theme switching to align with Rancher’s UI
Results
- https://github.com/a110605/longhorn-hackday
- https://github.com/a110605/longhorn-ui/tree/darkmode
- https://github.com/houhoucoop/hackweek/tree/main/hackweek24
Resources
- Longhorn UI: https://github.com/longhorn/longhorn-ui
- Rancher UI Extension: https://extensions.rancher.io/extensions/next/home
- darkreader: https://www.npmjs.com/package/darkreader
- veaury: https://github.com/gloriasoft/veaury
- module federation: https://webpack.js.org/concepts/module-federation/
Introducing "Bottles": A Proof of Concept for Multi-Version CRD Management in Kubernetes by aruiz
Description
As we delve deeper into the complexities of managing multiple CRD versions within a single Kubernetes cluster, I want to introduce "Bottles" - a proof of concept that aims to address these challenges.
Bottles propose a novel approach to isolating and deploying different CRD versions in a self-contained environment. This would allow for greater flexibility and efficiency in managing diverse workloads.
Goals
- Evaluate Feasibility: determine if this approach is technically viable, as well as identifying possible obstacles and limitations.
- Reuse existing technology: leverage existing products whenever possible, e.g. build on top of Kubewarden as admission controller.
- Focus on Rancher's use case: the ultimate goal is to be able to use this approach to solve Rancher users' needs.
Resources
Core concepts:
- ConfigMaps: Bottles could be defined and configured using ConfigMaps.
- Admission Controller: An admission controller will detect "bootled" CRDs being installed and replace the resource name used to store them.
- Aggregated API Server: By analyzing the author of a request, the aggregated API server will determine the correct bottle and route the request accordingly, making it transparent for the user.
Integrate Backstage with Rancher Manager by nwmacd
Description
Backstage (backstage.io) is an open-source, CNCF project that allows you to create your own developer portal. There are many plugins for Backstage.
This could be a great compliment to Rancher Manager.
Goals
Learn and experiment with Backstage and look at how this could be integrated with Rancher Manager. Goal is to have some kind of integration completed in this Hack week.
Progress
Screen shot of home page at the end of Hackweek:
Day One
- Got Backstage running locally, understanding configuration with HTTPs.
- Got Backstage embedded in an IFRAME inside of Rancher
- Added content into the software catalog (see: https://backstage.io/docs/features/techdocs/getting-started/)
- Understood more about the entity model
Day Two
- Connected Backstage to the Rancher local cluster and configured the Kubernetes plugin.
- Created Rancher theme to make the light theme more consistent with Rancher
Days Three and Day Four
Created two backend plugins for Backstage:
- Catalog Entity Provider - this imports users from Rancher into Backstage
- Auth Provider - uses the proxied sign-in pattern to check the Rancher session cookie, to user that to authenticate the user with Rancher and then log them into Backstage by connecting this to the imported User entity from the catalog entity provider plugin.
With this in place, you can single-sign-on between Rancher and Backstage when it is deployed within Rancher. Note this is only when running locally for development at present
Day Five
- Start to build out a production deployment for all of the above
- Made some progress, but hit issues with the authentication and proxying when running proxied within Rancher, which needs further investigation
Small healthcheck tool for Longhorn by mbrookhuis
Project Description
We have often problems (e.g. pods not starting) that are related to PVCs not running, cluster (nodes) not all up or deployments not running or completely running. This all prevents administration activities. Having something that can regular be run to validate the status of the cluster would be helpful, and not as of today do a lot of manual tasks.
As addition (read enough time), we could add changing reservation, adding new disks, etc. --> This didn't made it. But the scripts can easily be adopted.
This tool would decrease troubleshooting time, giving admins rights to the rancher GUI and could be used in automation.
Goal for this Hackweek
At the end we should have a small python tool that is doing a (very) basic health check on nodes, deployments and PVCs. First attempt was to make it in golang, but that was taking to much time.
Overview
This tool will run a simple healthcheck on a kubernetes cluster. It will perform the following actions:
node check: This will check all nodes, and display the status and the k3s version. If the status of the nodes is not "Ready" (this should be only reported), the cluster will be reported as having problems
deployment check: This check will list all deployments, and display the number of expected replicas and the used replica. If there are unused replicas this will be displayed. The cluster will be reported as having problems.
pvc check: This check will list of all pvc's, and display the status and the robustness. If the robustness is not "Healthy", the cluster will be reported as having problems.
If there is a problem registered in the checks, there will be a warning that the cluster is not healthy and the program will exit with 1.
The script has 1 mandatory parameter and that is the kubeconf of the cluster or of a node off the cluster.
The code is writen for Python 3.11, but will also work on 3.6 (the default with SLES15.x). There is a venv present that will contain all needed packages. Also, the script can be run on the cluster itself or any other linux server.
Installation
To install this project, perform the following steps:
- Create the directory /opt/k8s-check
mkdir /opt/k8s-check
- Copy all the file to this directory and make the following changes:
chmod +x k8s-check.py
Enabling Rancher as an OIDC Provider by rcabello
Description
Kubernetes supports OpenID Connect (OIDC) natively as an authentication mechanism, enabling token-based user authentication. This can be configured through flags in the Kubernetes API server or by using AuthenticationConfiguration.
The purpose of this project is to enable Rancher to function as an OIDC provider, allowing Rancher's local cluster to act as an OIDC identity provider for downstream clusters. This setup will allow users to authenticate directly with downstream clusters without relying on Rancher’s proxy and impersonation mechanisms.
Rancher will continue to support all authentication providers. When a user attempts to log in via the Rancher OIDC provider, they will be redirected to the authentication provider configured in Rancher.
This approach also facilitates integration with third-party tools (e.g StackState)
Goals
- Implement Rancher as an OIDC provider using the ORY Fosite library, focusing only on the essential functionality required for basic integration.
- Enable downstream clusters to authenticate using JWT tokens issued by Rancher.
- Configure StackState to authenticate using Rancher as an OIDC provider.
Resources
https://github.com/ory/fosite
OIDC Loginproxy by toe
Description
Reverse proxies can be a useful option to separate authentication logic from application logic. SUSE and openSUSE use "loginproxies" as an authentication layer in front of several services.
Currently, loginproxies exist which support LDAP authentication or SAML authentication.
Goals
The goal of this Hack Week project is, to create another loginproxy which supports OpenID Connect authentication which can then act as a drop-in replacement for the existing LDAP or SAML loginproxies.
Testing is intended to focus on the integration with OIDC IDPs from Okta, KanIDM and Authentik.
Resources
Migrate from Docker to Podman by tjyrinki_suse
Description
I'd like to continue my former work on containerization of several domains on a single server by changing from Docker containers to Podman containers. That will need an OS upgrade as well as Podman is not available in that old server version.
Goals
- Update OS.
- Migrate from Docker to Podman.
- Keep everything functional, including the existing "meanwhile done" additional Docker container that is actually being used already.
- Keep everything at least as secure as currently. One of the reasons of having the containers is to isolate risks related to services open to public Internet.
- Try to enable the Podman use in production.
- At minimum, learn about all of these topics.
- Optionally, improve Ansible side of things as well...
Resources
A search engine is one's friend. Migrating from Docker to Podman, and from docker-compose to podman-compose.
VulnHeap by r1chard-lyu
Description
The VulnHeap project is dedicated to the in-depth analysis and exploitation of vulnerabilities within heap memory management. It focuses on understanding the intricate workflow of heap allocation, chunk structures, and bin management, which are essential to identifying and mitigating security risks.
Goals
- Familiarize with heap
- Heap workflow
- Chunk and bin structure
- Vulnerabilities
- Vulnerability
- Use after free (UAF)
- Heap overflow
- Double free
- Use Docker to create a vulnerable environment and apply techniques to exploit it
Resources
- https://heap-exploitation.dhavalkapil.com/divingintoglibc_heap
- https://raw.githubusercontent.com/cloudburst/libheap/master/heap.png
- https://github.com/shellphish/how2heap?tab=readme-ov-file
Contributing to Linux Kernel security by pperego
Description
A couple of weeks ago, I found this blog post by Gustavo Silva, a Linux Kernel contributor.
I always strived to start again into hacking the Linux Kernel, so I asked Coverity scan dashboard access and I want to contribute to Linux Kernel by fixing some minor issues.
I want also to create a Linux Kernel fuzzing lab using qemu and syzkaller
Goals
- Fix at least 2 security bugs
- Create the fuzzing lab and having it running
The story so far
- Day 1: setting up a virtual machine for kernel development using Tumbleweed. Reading a lot of documentation, taking confidence with Coverity dashboard and with procedures to submit a kernel patch
- Day 2: I read really a lot of documentation and I triaged some findings on Coverity SAST dashboard. I have to confirm that SAST tool are great false positives generator, even for low hanging fruits.
- Day 3: Working on trivial changes after I read this blog post:
https://www.toblux.com/posts/2024/02/linux-kernel-patches.html. I have to take confidence
with the patch preparation and submit process yet.
- First trivial patch sent: using strtruefalse() macro instead of hard-coded strings in a staging driver for a lcd display
- Fix for a dereference before null check issue discovered by Coverity (CID 1601566) https://scan7.scan.coverity.com/#/project-view/52110/11354?selectedIssue=1601566
- Day 4: Triaging more issues found by Coverity.
- The patch for CID 1601566 was refused. The check against the NULL pointer was pointless so I prepared a version 2 of the patch removing the check.
- Fixed another dereference before NULL check in iwlmvmparsewowlaninfo_notif() routine (CID 1601547). This one was already submitted by another kernel hacker :(
- Day 5: Wrapping up. I had to do some minor rework on patch for CID 1601566. I found a stalker bothering me in private emails and people I interacted with me, advised he is a well known bothering person. Markus Elfring for the record.
Wrapping up: being back doing kernel hacking is amazing and I don't want to stop it. My battery pack is completely drained but changing the scope gave me a great twist and I really want to feel this energy not doing a single task for months.
I failed in setting up a fuzzing lab but I was too optimistic for the patch submission process.
The patches
Bot to identify reserved data leak in local files or when publishing on remote repository by mdati
Description
Scope here is to prevent reserved data or generally "unwanted", to be pushed and saved on a public repository, i.e. on Github, causing disclosure or leaking of reserved informations.
The above definition of reserved or "unwanted" may vary, depending on the context: sometime secret keys or password are stored in data or configuration files or hardcoded in source code and depending on the scope of the archive or the level of security, it can be either wanted, permitted or not at all.
As main target here, secrets will be registration keys or passwords, to be detected and managed locally or in a C.I. pipeline.
Goals
Detection:
- Local detection: detect secret words present in local files;
- Remote detection: detect secrets in files, in pipelines, going to be transferred on a remote repository, i.e. via
git push
;
Reporting:
- report the result of detection on stderr and/or log files, noticed excluding the secret values.
Acton:
- Manage the detection, by either deleting or masking the impacted code or deleting/moving the file itself or simply notify it.
Resources
- Project repository, published on Github (link): m-dati/hkwk24;
- Reference folder: hkwk24/chksecret;
- First pull request (link): PR#1;
- Second PR, for improvements: PR#2;
- README.md and TESTS.md documentation files available in the repo root;
- Test subproject repository, for testing CI on push [TBD].
Notes
We use here some examples of secret words, that still can be improved.
The various patterns to match desired reserved words are written in a separated module, to be on demand updated or customized.
[Legend: TBD = to be done]