Open Source Linux Security Software - Page 36
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AndPermission
Permissions manager for Android platform
AndPermission is an AndroidX library that centralizes permission-related workflows behind a fluent Java API. It requests ordinary runtime permissions and reports granted or denied results through callbacks. The library can also help applications share private files through platform-compatible mechanisms. Specialized flows cover installing packages from unknown sources, drawing over other apps, displaying notifications, and accessing notification listeners. It also supports directing users to grant permission to modify system settings. The package targets Android 4.0 and newer and is distributed as a Gradle dependency. Its focused API reduces the version checks and settings navigation that developers would otherwise implement manually. -
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Asciinema Server
Platform for hosting and sharing terminal session recordings
asciinema-server is the backend component of the asciinema suite. Built with Elixir and Phoenix, it provides an API and web UI for hosting, sharing, and managing terminal session recordings (asciicasts). It allows you to self-host your own instance or use the public asciinema.org. -
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BLESS
An SSH Certificate Authority that runs as an AWS Lambda function
BLESS is an SSH Certificate Authority that runs as an AWS Lambda function and is used to sign SSH public keys. SSH Certificates are an excellent way to authorize users to access a particular SSH host, as they can be restricted for a single-use case, and can be short-lived. Instead of managing the authorized_keys of a host, or controlling who has access to SSH Private Keys, hosts just need to be configured to trust an SSH CA. BLESS should be run as an AWS Lambda in an isolated AWS account. Because BLESS needs access to a private key that is trusted by your hosts, an isolated AWS account helps restrict who can access that private key, or modify the BLESS code you are running. AWS Lambda functions can use an AWS IAM Policy to limit which IAM Roles can invoke the Lambda Function. If properly configured, you can restrict which IAM Roles can request SSH Certificates. -
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Cabot
Self-hosted, easily-deployable monitoring and alerts service
Cabot is a free, open-source, self-hosted infrastructure monitoring platform that provides some of the best features of PagerDuty, Server Density, Pingdom and Nagios without their cost and complexity. It provides a web interface that allows you to monitor services (e.g. "Stage Redis server", "Production ElasticSearch cluster") and send telephone, sms or hipchat/email alerts to your on-duty team if those services start misbehaving or go down - all without writing a line of code. Best of all, you can use data that you're already pushing to Graphite/statsd to generate alerts, rather than implementing and maintaining a whole new system of data collectors. We built Cabot as a Christmas project at Arachnys because we couldn't wrap our heads around Nagios, and nothing else out there seemed to fit our use case. We're open-sourcing it in the hope that others find it useful. -
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CanCanCan
The authorization Gem for Ruby on Rails
CanCanCan is an authorization library for Ruby and Ruby on Rails which restricts what resources a given user is allowed to access. All permissions can be defined in one or multiple ability files and not duplicated across controllers, views, and database queries, keeping your permissions logic in one place for easy maintenance and testing. Authorizations library that allows you to define the rules to access different objects, and provides helpers to check for those permissions. Rails helpers to simplify the code in Rails Controllers by performing the loading and checking of permissions of models automatically and reduce duplicated code. The current user's permissions can then be checked using the can? and cannot? methods in views and controllers. One of the key features of CanCanCan, compared to other authorization libraries, is the possibility to retrieve all the objects that the user is authorized to access. -
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Cherrybomb
Cherrybomb is a CLI tool that helps you avoid undefined user behaviour
Cherrybomb is an CLI tool written in Rust that helps prevent incorrect code implementation early in development. It works by validating and testing your API using an OpenAPI file. Its main goal is to reduce security errors and ensure your API functions as intended. Cherrybomb makes sure your API is working correctly. It checks your API's spec file (OpenAPI Specification) for good practices and makes sure it follows the OAS rules. Then, it tests your API for common issues and vulnerabilities. If any problems are found, Cherrybomb gives you a detailed report with the exact location of the problem so you can fix it easily. With a configuration file, you can easily edit, view, Cherrybomb's options. The config file allows you to set the running profile, location of the oas file, the verbosity and ignore the TLS error. Config also allows you to override the server's URL with an array of servers, and add security to the request. -
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Cloud Custodian
Rules engine for cloud security, cost optimization, and governance
Cloud Custodian enables users to be well managed in the cloud. The simple YAML DSL allows you to easily define rules to enable a well-managed cloud infrastructure, that's both secure and cost-optimized. It consolidates many of the ad-hoc scripts organizations have into a lightweight and flexible tool, with unified metrics and reporting. Custodian supports managing AWS, Azure, and GCP public cloud environments. Besides just providing reports of issues, Custodian can actively enforce the security policies you define. Setup off-hours to save you money, by turning-off resources when they're not being used. Garbage collects unused resources by looking into utilization metrics. Custodian can be run locally, on an instance, or Serverless in AWS Lambda. Cloud Custodian is open source and free for everyone to use. Use Custodian to build complex workflows or simple queries, millions of policies can be constructed using our easy-to-read DSL. -
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CloudFoundry UAA
CloudFoundry User Account and Authentication (UAA) Server
The UAA is a multi tenant identity management service, used in Cloud Foundry, but also available as a stand alone OAuth2 server. Its primary role is as an OAuth2 provider, issuing tokens for client applications to use when they act on behalf of Cloud Foundry users. It can also authenticate users with their Cloud Foundry credentials, and can act as an SSO service using those credentials (or others). It has endpoints for managing user accounts and for registering OAuth2 clients, as well as various other management functions. -
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Constantine
Modular, high-performance, zero-dependency cryptography stack
High-performance cryptography for proof systems and blockchain protocols. This library provides a constant-time implementation of cryptographic primitives with a particular focus on cryptography used in blockchains and zero-knowledge-proof systems. The library aims to be a fast, compact and hardened library for elliptic curve cryptography needs, in particular for blockchain protocols and zero-knowledge proofs system. -
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CrossLinked
LinkedIn employee enumeration tool using search engine scraping
CrossLinked is an open source LinkedIn enumeration tool designed to collect employee names associated with a target organization. Instead of accessing LinkedIn directly or relying on its API, it performs search engine scraping using services such as Google and Bing to discover public LinkedIn profile results. By analyzing these search results, CrossLinked extracts employee names and processes them into usable formats for security assessments or reconnaissance activities. This approach allows the tool to operate without credentials, authentication tokens, or LinkedIn account access. CrossLinked is commonly used by penetration testers and security professionals during the reconnaissance phase to identify potential usernames or email address formats for a target organization. It also supports customizable naming templates, enabling users to generate usernames or email formats that match corporate account conventions. -
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Django OAuth Toolkit
OAuth2 goodies for the Djangonauts!
Django OAuth Toolkit can help you by providing, out of the box, all the endpoints, data, and logic needed to add OAuth2 capabilities to your Django projects. Django OAuth Toolkit makes extensive use of the excellent OAuthLib, so that everything is rfc-compliant. OAuth is an open standard for access delegation, commonly used as a way for Internet users to grant websites or applications access to their information on other websites but without giving them the passwords. Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel. Your Django app exposes a web API you want to protect with OAuth2 authentication. You need to implement an OAuth2 authorization server to provide tokens management for your infrastructure. -
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FingerprintJS Server API Node.js SDK
Node.js wrapper for FingerprintJS Server API
Node.js wrapper for FingerprintJS Server API. This SDK might be also compatible, however not actively tested, with JavaScript "edge" runtimes that do not support all Node APIs, for example, Vercel Edge Runtime, or Cloudflare Workers. To make it work, replace the SDK's built-in fetch function (which relies on Node APIs) with the runtime's native fetch function. -
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Flashbang
Project "Flashbang" - An open-source Flash-security helper
Flashbang is an open-source Flash-security helper tool designed to extract and display flashVars from a SWF that is “naked” (i.e. not wrapped in a bigger application) so that security testers can begin analysis (e.g. for XSS or other vectors) without decompiling the whole SWF. It is built atop Mozilla’s Shumway project. It works in modern browsers via HTML/JS, can also be run locally, and does not upload SWFs to servers (processing stays local). It is still considered alpha quality. Clone the repo using the --recursive flag, so that all necessary submodules are cloned as well. Ideally, clone it into an Apache web-root (or any other web server). Prepare the environment for Shumway to work properly. -
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GORSK
Idiomatic Golang Restful Starter Kit
There are many ways to write a (RESTful) backend in Go. Most of the available tutorials are way too simple, with all the presented content fitting into a single file (or at most two-three). More complex examples are quite rare, and even most of them miss lots of things for the sake of reducing complexity. That’s one of the reasons I wrote Gorsk - to have a fully functional example of a RESTful backend (in Golang) utilizing best practices, idiomatic code, and minimal dependencies. Instead of spending time wiring up your project, thinking how and where to place HTTP handlers, how to inject dependencies, test your application services and database using table tests and mocking, handle sessions and more - use Gorsk as a base foundation for your application and start adding business logic, or get learn from it and copy only what you need/like to your application. That was the primary idea behind this project. -
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GUN
Cybersecurity protocol for syncing decentralized graph data
GUN is a small, easy, and fast data sync and storage system that runs everywhere JavaScript does. The aim of GUN is to let you focus on the data that needs to be stored, loaded, and shared in your app without worrying about servers, network calls, databases, or tracking offline changes or concurrency conflicts. This lets you build cool apps fast. When a browser peer asks for data, it'll merge the reply with its own data using a CRDT, then cache the result. GUN is fully decentralized (peer-to-peer or multi-master), meaning that changes are not controlled by a centralized server. A server can be just another peer in the network, one that may have more reliable resources than a browser. You save data on one machine, and it will sync it to other peers without needing a complex consensus protocol. It just works. GUN can be used in both browsers and servers. We have made it easy to install in many different environments. -
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GooFuzz
OSINT fuzzing tool using Google dorks to find exposed resources
GooFuzz is an open source security tool designed to perform fuzzing using an OSINT-based approach by leveraging advanced Google search techniques. It is written in Bash and automates the use of Google Dorking queries to discover publicly accessible information related to a target domain. Instead of directly sending requests to the target server, GooFuzz gathers results through search engine indexing, allowing enumeration without leaving traces in the target’s server logs. This method enables the discovery of potentially sensitive files, directories, subdomains, and parameters that are already exposed on the web. By combining wordlists, search operators, and file extension filters, the tool helps security professionals locate misconfigured or unintentionally exposed resources. GooFuzz is commonly used in penetration testing, reconnaissance, and bug bounty research where passive information gathering is important. -
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Google Authenticator PAM Library
Example PAM module demonstrating two-factor authentication
google-authenticator-libpam is a Pluggable Authentication Module (PAM) that adds one-time passcodes to Unix and Linux logins using open OATH standards. It plugs into PAM stacks for services like SSH, su, or desktop display managers, prompting users for a time-based (TOTP) or counter-based (HOTP) code after their password. A lightweight enrollment program bootstraps each account by generating a secret, printing a QR code, and writing per-user configuration with safe file permissions. Because verification happens locally, codes work offline and do not depend on any Google service, which suits high-security and air-gapped environments. Administrators can tune skew tolerance, rate limiting, emergency scratch codes, and which PAM control flags enforce 2FA for specific users or groups. The project’s design favors simplicity and auditability, keeping the runtime small and the configuration explicit so it’s easy to review in production change control. -
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HTML5 Security Cheatsheet
A collection of HTML5 related XSS attack vectors
H5SC, or the HTML5 Security Cheatsheet, is a public reference collection for researching browser-based cross-site scripting behavior. It catalogs HTML5-related XSS vectors so security professionals can compare how markup, browser features, and parsing behavior affect injection risks. The repository also includes supporting files intended for controlled XSS testing. A collection of lesser-known browser behaviors helps researchers investigate edge cases that ordinary checklists may miss. Redirect utilities cover several URI schemes and HTTP status codes used during security experiments. The material is published through the html5sec interface for easier browsing. It is intended for authorized testing, defensive research, and the validation of sanitizers and browser protections. -
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Hakrawler
Fast Go web crawler for discovering URLs and web app endpoints
hakrawler is a lightweight command-line web crawler built in Go that is designed to quickly discover URLs, endpoints, and assets within web applications. It is primarily used during the reconnaissance phase of security testing, bug bounty hunting, and penetration testing. It works by automatically crawling web pages and extracting links, JavaScript file locations, and other resources that may reveal additional attack surface or hidden functionality. hakrawler is implemented as a simple and efficient crawler using the Gocolly library, which allows it to perform fast and concurrent crawling of web pages. It accepts URLs through standard input, making it easy to integrate into command-line pipelines with other security tools. This workflow enables researchers to combine it with subdomain enumeration, HTTP probing, and vulnerability scanning utilities to automate reconnaissance processes. hakrawler can follow links within a website and optionally include subdomains. -
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IAM
Enterprise-level Go language combat project
IAM is an identity and access management system developed based on the Go language, which is used to authorize resource access. The latest stable version is v1.6.2, it is recommended to install and test based on the stable version. Cooperating with the geek time column " Go language project development practice ", explaining how to use Go to develop enterprise-level applications is the theoretical course of the project, including the explanation of various knowledge points and construction ideas of the project, as well as my first-line research and development experience and advice. As a development scaffolding, developers can quickly build their own applications after cloning and secondary development. The IAM project will be maintained for a long time and updated regularly, welcome brothers Star & Contribute. -
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IVRE
Open source framework for large scale network reconnaissance and analy
IVRE is an open source network reconnaissance framework designed to collect, process, and analyze intelligence gathered from network scans and traffic data. It provides tools for both active and passive reconnaissance, enabling users to understand how networks behave and identify exposed services or infrastructure. The framework integrates with well known security and scanning tools such as Nmap, Masscan, ZGrab2, ZDNS, and Zeek to gather large amounts of network intelligence. IVRE stores the collected data in a database and offers multiple ways to explore and analyze it, including a web interface, command line tools, and a Python API. This allows security professionals to query scan results, inspect network flows, and identify patterns across large datasets. The project can be used to build self hosted alternatives to internet scanning services such as Shodan or Censys, giving organizations full control over their own reconnaissance infrastructure. -
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IdentityServer
The most flexible and standards-compliant OpenID Connect and OAuth 2
The most flexible and standards-compliant OpenID Connect and OAuth 2.0 framework for ASP.NET Core. IdentityServer gives you full control over your UI, UX, business logic, and data. In IdentityServer, customizing your workflows is not an afterthought. Our APIs and extensibility points allow adapting to your workflows and business rules without having to find complicated workarounds. You can choose whichever UI framework or technology suits you best to integrate with our token engine. We believe that C# is the best DSL, don't bother with trying to express your logic in YAML, XML, or other "languages". In short, if what you want to achieve is doable in .NET Core, it is doable with IdentityServer. You are not forced onto a specific hosting environment or other peoples' servers, you are not forced to use a specific database or geographical region. -
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Injectify
Perform advanced MiTM attacks on websites with ease
Perform advanced MiTM attacks on websites with ease. Injectify is a modern web based MiTM tool, similiar to BeEF (although completely unrelated in terms of source code). It features cross-platform clients (Web, Desktop, Browser extension). Create a reverse Javascript shell between the victim and the attacker. Records keystrokes and logs them to a database. -
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Linux Exploit Suggester
Linux Exploit Suggester; based on operating system release number
Linux Exploit Suggester is a lightweight Perl script designed to help security testers quickly identify local Linux kernel privilege-escalation candidates by matching the host’s kernel/OS release string against a curated list of known vulnerable versions. It runs uname -r by default (or accepts a manual -k kernel string) and prints a suggestive, human-readable list of possible exploit names, CVEs, and references that match that kernel version. The tool intentionally keeps its logic simple: it performs string matching and warns that patched or back-ported kernels can mislead results, so its output should be treated as pointers for further verification rather than definitive proof of exploitable code. Sample output demonstrates common exploit names, CVEs, and direct exploit-db / vendor links to aid triage. -
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Linux Notification Center
A notification daemon/center for linux
A haskell-written notification center for users that like a desktop with style. The notification center receives notifications via DBUS (like any notification daemon) and shows them in the upper right corner of the screen. The notification (if not specified in the notification otherwise) will also be shown in the notification center even after the notification disappeared by itself. The notifications can be clicked to make them disappear. Notifications can be replaced by the use of the replaces-id feature of the notification specification. The notification center can (optionally) show user-specified buttons in the bottom that can be in two states (highlighted/not highlighted) and that can run customizable shell commands.
