ssrf-req-filter

ssrf-req-filter - Prevent SSRF Attacks 🛡️

Server-Side Request Forgery (SSRF)

SSRF is an attack vector that abuses an application to interact with the internal/external network or the machine itself. One of the enablers for this vector is the mishandling of URLs. Read More

Install

npm install ssrf-req-filter

Usage

• Axios:

const ssrfFilter = require('ssrf-req-filter');
const url = 'https://127.0.0.1'
axios.get(url, {httpAgent: ssrfFilter(url), httpsAgent: ssrfFilter(url)})
      .then((response) => {
        console.log(`Success`);
      })
      .catch((error) => {
        console.log(`${error.toString().split('\n')[0]}`);
      })
      .then(() => {

      });

• Node-fetch:

const ssrfFilter = require('ssrf-req-filter');
const fetch = require("node-fetch");
const url = 'https://127.0.0.1'
fetch(url, {
    agent: ssrfFilter(url)
  })
  .then((response) => {
    console.log(`Success`);
  })
  .catch(error => {
    console.log(`${error.toString().split('\n')[0]}`);
  });

Note: It's recommended to overwrite both httpAgent and httpsAgent in Axios with ssrf-req-filter. Otherwise, SSRF mitigation can be bypassed via cross protocol redirects. Refer to Doyensec's research for more information.

Credits: Implementation inspired By https://github.com/welefen/ssrf-agent