[Security] Bump webpack from 5.80.0 to 5.94.0 in /webapp

Bumps webpack from 5.80.0 to 5.94.0. This update includes a security fix.

Vulnerabilities fixed

Webpack's AutoPublicPathRuntimeModule has a DOM Clobbering Gadget that leads to XSS Hi, Webpack developer team!

Summary

We discovered a DOM Clobbering vulnerability in Webpack’s AutoPublicPathRuntimeModule. The DOM Clobbering gadget in the module 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.

We found the real-world exploitation of this gadget in the Canvas LMS which allows XSS attack happens through an javascript code compiled by Webpack (the vulnerable part is from Webpack). We believe this is a severe issue. If Webpack’s code is not resilient to DOM Clobbering attacks, it could lead to significant security vulnerabilities in any web application using Webpack-compiled code.

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/

Gadgets found in Webpack

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Patched versions: 5.94.0 Affected versions: < 5.94.0

Release notes

Sourced from webpack's releases.

v5.94.0

Bug Fixes

• Added runtime condition for harmony reexport checked
• Handle properly data/http/https protocols in source maps
• Make bigint optimistic when browserslist not found
• Move @​types/eslint-scope to dev deps
• Related in asset stats is now always an array when no related found
• Handle ASI for export declarations
• Mangle destruction incorrect with export named default properly
• Fixed unexpected asi generation with sequence expression
• Fixed a lot of types

New Features

• Added new external type "module-import"
• Support webpackIgnore for new URL() construction
• [CSS] @import pathinfo support

Security

• Fixed DOM clobbering in auto public path

v5.93.0

Bug Fixes

• Generate correct relative path to runtime chunks
• Makes DefinePlugin quieter under default log level
• Fixed mangle destructuring default in namespace import
• Fixed consumption of eager shared modules for module federation
• Strip slash for pretty regexp
• Calculate correct contenthash for CSS generator options

New Features

• Added the binary generator option for asset modules to explicitly keep source maps produced by loaders
• Added the modern-module library value for tree shakable output
• Added the overrideStrict option to override strict or non-strict mode for javascript modules

v5.92.1

Bug Fixes

• Doesn't crash with an error when the css experiment is enabled and contenthash is used

v5.92.0

Bug Fixes

• Correct tidle range's comutation for module federation
• Consider runtime for pure expression dependency update hash
• Return value in the subtractRuntime function for runtime logic

... (truncated)

Commits

• eabf85d chore(release): 5.94.0
• 955e057 security: fix DOM clobbering in auto public path
• 9822387 test: fix
• cbb86ed test: fix
• 5ac3d7f fix: unexpected asi generation with sequence expression
• 2411661 security: fix DOM clobbering in auto public path
• b8c03d4 fix: unexpected asi generation with sequence expression
• f46a03c revert: do not use heuristic fallback for "module-import"
• 60f1898 fix: do not use heuristic fallback for "module-import"
• 66306aa Revert "fix: module-import get fallback from externalsPresets"
• Additional commits viewable in compare view

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