🚨 [security] Update koa 2.13.4 → 3.0.1 (major)

[depfu]

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ koa (2.13.4 → 3.0.1) · Repo · Changelog

Security Advisories 🚨

🚨 Koa Open Redirect via Referrer Header (User-Controlled)

Summary

In the latest version of Koa, the back method used for redirect operations adopts an insecure implementation, which uses the user-controllable referrer header as the redirect target.

Details

on the API document https://www.koajs.net/api/response#responseredirecturl-alt, we can see:

response.redirect(url, [alt])

Performs a [302] redirect to url.
The string "back" is specially provided for Referrer support, using alt or "/" when Referrer does not exist.
ctx.redirect('back');

ctx.redirect('back', '/index.html');

ctx.redirect('/login');

ctx.redirect('http://google.com');

however, the "back" method is insecure:

• https://github.com/koajs/koa/blob/master/lib/response.js#L322

  back (alt) {
    const url = this.ctx.get('Referrer') || alt || '/'
    this.redirect(url)
  },

Referrer Header is User-Controlled.

PoC

there is a demo for POC:

const Koa = require('koa')
const serve = require('koa-static')
const Router = require('@koa/router')
const path = require('path')
const app = new Koa()

const router = new Router()
// Serve static files from the public directory

app.use(serve(path.join(__dirname, 'public')))
// Define routes

router.get('/test', ctx => {

ctx.redirect('back', '/index1.html')

})
router.get('/test2', ctx => {

ctx.redirect('back')

})
router.get('/', ctx => {

ctx.body = 'Welcome to the home page! Try accessing /test, /test2'

})
app.use(router.routes())

app.use(router.allowedMethods())
const port = 3000

app.listen(port, () => {

console.log(Server running at http://localhost:${port})

})

Proof Of Concept

GET /test HTTP/1.1
Host: 127.0.0.1:3000
Referer: http://www.baidu.com
Connection: close
GET /test2 HTTP/1.1

Host: 127.0.0.1:3000

Referer: http://www.baidu.com

Connection: close

Impact

https://learn.snyk.io/lesson/open-redirect/

🚨 Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function

Summary

In koa < 2.16.1 and < 3.0.0-alpha.5, passing untrusted user input to ctx.redirect() even after sanitizing it, may execute javascript code on the user who use the app.

Patches

This issue is patched in 2.16.1 and 3.0.0-alpha.5.

PoC

Coming soon...

Impact

1. Redirect user to another phishing site
2. Make request to another endpoint of the application based on user's cookie
3. Steal user's cookie

🚨 Inefficient Regular Expression Complexity in koa

Summary

Koa uses an evil regex to parse the X-Forwarded-Proto and X-Forwarded-Host HTTP headers. This can be exploited to carry out a Denial-of-Service attack.

PoC

Coming soon.

Impact

This is a Regex Denial-of-Service attack and causes memory exhaustion. The regex should be improved and empty values should not be allowed.

Release Notes

3.0.1

More info than we can show here.

3.0.0

More info than we can show here.

2.16.1

More info than we can show here.

2.16.0

More info than we can show here.

2.15.4

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ accepts (indirect, 1.3.7 → 1.3.8) · Repo · Changelog

Release Notes

1.3.8

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ content-type (indirect, 1.0.4 → 1.0.5) · Repo · Changelog

Release Notes

1.0.5

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ cookies (indirect, 0.8.0 → 0.9.1) · Repo · Changelog

Release Notes

0.9.1

More info than we can show here.

0.9.0

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ function-bind (indirect, 1.1.1 → 1.1.2) · Repo · Changelog

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ get-intrinsic (indirect, 1.1.3 → 1.3.0) · Repo · Changelog

Release Notes

1.3.0 (from changelog)

More info than we can show here.

1.2.7 (from changelog)

More info than we can show here.

1.2.6 (from changelog)

More info than we can show here.

1.2.5 (from changelog)

More info than we can show here.

1.2.4 (from changelog)

More info than we can show here.

1.2.3 (from changelog)

More info than we can show here.

1.2.2 (from changelog)

More info than we can show here.

1.2.1 (from changelog)

More info than we can show here.

1.2.0 (from changelog)

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ has-symbols (indirect, 1.0.3 → 1.1.0) · Repo · Changelog

Release Notes

1.1.0 (from changelog)

More info than we can show here.

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Commits

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↗️ is-generator-function (indirect, 1.0.10 → 1.1.0) · Repo · Changelog

Release Notes

1.1.0 (from changelog)

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ is-regex (indirect, 1.1.4 → 1.2.1) · Repo · Changelog

Release Notes

1.2.1 (from changelog)

More info than we can show here.

1.2.0 (from changelog)

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ mime-db (indirect, 1.49.0 → 1.54.0) · Repo · Changelog

Release Notes

1.54.0

More info than we can show here.

1.53.0 (from changelog)

More info than we can show here.

1.52.0

More info than we can show here.

1.51.0

More info than we can show here.

1.50.0

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Commits

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↗️ mime-types (indirect, 2.1.32 → 2.1.35) · Repo · Changelog

Release Notes

2.1.35

More info than we can show here.

2.1.34

More info than we can show here.

2.1.33

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Commits

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↗️ negotiator (indirect, 0.6.2 → 0.6.3) · Repo · Changelog

Release Notes

0.6.3 (from changelog)

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

↗️ safe-regex-test (indirect, 1.0.0 → 1.1.0) · Repo · Changelog

Release Notes

1.1.0 (from changelog)

More info than we can show here.

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

🆕 call-bind-apply-helpers (added, 1.0.2)

🆕 call-bound (added, 1.0.4)

🆕 dunder-proto (added, 1.0.1)

🆕 es-define-property (added, 1.0.1)

🆕 es-errors (added, 1.3.0)

🆕 es-object-atoms (added, 1.1.1)

🆕 get-proto (added, 1.0.1)

🆕 gopd (added, 1.2.0)

🆕 hasown (added, 2.0.2)

🆕 math-intrinsics (added, 1.1.0)

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