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Attack Surface Analyzer
Attack Surface Analyzer is a Microsoft developed open source security tool that analyzes the attack surface of a target system and reports on potential security vulnerabilities introduced during the installation of software or system misconfiguration.
Getting Attack Surface Analyzer
If you have the .NET SDK installed you can install Attack Surface Analyzer with dotnet tool install -g Microsoft.CST.AttackSurfaceAnalyzer.CLI
.
Platform specific binaries for Attack Surface Analyzer are distributed via our GitHub releases page.
Dependencies on Linux/Docker
Attack Surface Analyzer is built on .NET so .NET's linux dependencies must be installed to run ASA. Some linux distributions may not contain these packages by default.
For running Attack Surface Analyzer in Docker you should use the .NET Docker Image Base or another image that has the .NET SDK installed, and then install the ASA tool from Nuget in your Dockerfile like RUN dotnet tool install -g Microsoft.CST.AttackSurfaceAnalyzer.CLI
Documentation
Documentation is available on the Wiki.
Documentation for the API is available on GitHub Pages.
New Features in 2.3
- New Blazor GUI with Rule Authoring and Testing Sandbox
- New Collectors
- Improved collection and analysis performance.
- Support for C# 10/.NET 6
Overview
Attack Surface Analyzer 2 replaces the original Attack Surface Analyzer tool, released publicly in 2012.
Potential users of Attack Surface Analyzer include:
- DevOps Engineers - View changes to the system attack surface introduced when your software is installed.
- IT Security Auditors - Evaluate risk presented by when third-party software is installed.
Core Features
The core feature of Attack Surface Analyzer is the ability to "diff" an operating system's security configuration, before and after a software component is installed and to run arbitrary complex rules on the results to surface interesting findings. This is important because most installation processes require elevated privileges, and once granted, can lead to unintended system configuration changes.
Attack Surface Analyzer currently reports on changes to the following operating system components:
- File system (static snapshot and live monitoring available)
- User accounts
- Services
- Network Ports
- Certificates
- Registry
- COM Objects
- Event Logs
- Firewall Settings
- Wifi Networks
- Cryptographic Keys
- Processes
- TPM Information
All data collected is stored in a set of local SQLite databases.
How to Use Attack Surface Analyzer
Run the following commands in an Administrator Shell (or as root). Replace asa
with asa.exe
as appropriate for your platform.
CLI Mode
To start a default all collectors run: asa collect -a
To compare the last two collection runs: asa export-collect
For other commands run: asa --help
GUI Mode
For the GUI interface run: asa gui
and a browser window should open directed at http://localhost:5000
with the web based interface.
Detailed information on how to use Attack Surface Analyzer can be found on our wiki.
Building
To build Attack Surface Analyzer, see BUILD.
Versions
The latest public version of Attack Surface Analyzer with public builds is 2.3 (see Release\v2.3).
Contributing
This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.
When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.
This project has adopted the Microsoft Open Source Code of Conduct.
For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.
Reporting Security Issues
Security issues and bugs should be reported privately, via email, to the Microsoft Security Response Center (MSRC) at secure@microsoft.com. You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Further information, including the MSRC PGP key, can be found in the Security TechCenter.
License
Attack Surface Analyzer 2 is licensed under the MIT license.