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@microsoft/antissrf

v1.0.0

Published

A library to prevent SSRF vulnerabilities in Node.js applications

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

microsoft1esmicrosoft1esmicrosoft-oss-releasesmicrosoft-oss-releases

Keywords

ssrfanti-ssrfsecuritysanitizerurl-validation

Readme

Microsoft AntiSSRF Library for Node.js

The Microsoft AntiSSRF Library for Node.js is a security-developed, exhaustively-tested library that provides robust URL validation to protect Node.js applications from Server-Side Request Forgery (SSRF) vulnerabilities. It integrates seamlessly with Node.js HTTP/HTTPS agents, allowing developers to secure outbound HTTP requests with minimal code changes.

How to Use

The AntiSSRF Library provides validation for different scenarios based on your trust requirements:

| Use Case | Description | Documentation Link | | --- | --- | --- | | General Case | The untrusted URL can belong to any domain or an untrusted domain. | AntiSSRFPolicy | | Azure Key Vault Domain | The untrusted URL must be an Azure Key Vault endpoint. | URIValidator.inAzureKeyVaultDomain | | Azure Storage Domain | The untrusted URL must be an Azure Storage endpoint. | URIValidator.inAzureStorageDomain | | Allowlist of Trusted Domains | The untrusted URL must belong to a specific, trusted domain. | URIValidator.inDomain |

Key Features

  • SSRF Attack Prevention - Blocks malicious server-side request forgery attempts

  • Private Network Protection - Separate built-in configuration options for internal vs. external address HTTP clients

  • DNS Rebinding Protection - Guards against DNS-based attacks

  • Redirect Protection - Re-validates on all redirects to prevent bypass attempts

  • Protocol Validation - Ensures only safe protocols are used

  • Fully Customizable - Configure domain allowlists, IP ranges, headers, and validation policies

Additional Documentation

Explore our comprehensive documentation to get the most out of Microsoft AntiSSRF:

Getting Started

API Documentation

Feedback & Contributing

We welcome feedback and contributions from the community! Here's how you can get involved:

Support Policy

For support inquiries, contact [email protected].