webappsec-subresource-integrity
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webappsec-subresource-integrity | ci | |
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5 | 4 | |
69 | 19 | |
- | - | |
0.0 | 6.3 | |
about 1 year ago | 5 days ago | |
HTML | TypeScript | |
GNU General Public License v3.0 or later | MIT License |
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webappsec-subresource-integrity
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JavaScript import maps are now supported cross-browser
Seeing this, it reminded me of an interesting topic: caching at browser-level the external libraries used for big performance improvements: https://github.com/w3c/webappsec-subresource-integrity/issue...
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📦 Everything you need to know: package managers
All package managers implement strict specifications on this approach to integrity. For example, npm respects the W3C's "Subresource Integrity or SRI" specification, which describes the mechanisms to be implemented to reduce the risk of malicious code injection. You can jump directly here to the specification document if you want to dig deeper.
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Python 3.11 in the Web Browser
One proposed solution is checksums on CDN provided javascript:
https://w3c.github.io/webappsec-subresource-integrity/
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How Cloudflare verifies the code WhatsApp Web serves to users
It's great to hear that you want this added to browsers themselves, and you're right that browsers are more likely to implement such changes if you can show that users are deliberately installing an extension to add the missing functionality.
There has been some discussion at the W3C about extending the SRI spec in this direction[0], but it seems they are reluctant to do that unless "multiple browser vendors" choose to implement something like this.[1] Hopefully the existence and adoption of this browser extension helps to solve that bootstrapping / Catch-22 problem.
As for usability, would it be sufficient to just adopt a TOFU model, where the browser pins the first key it sees for a domain? To prevent the risk of permanently bricking a site (if the key gets lost, or the host gets temporarily compromised) you could politely warn the user that the key has changed, or just show a different colour icon representing that the code is correctly signed with an unknown key.
[0] https://github.com/w3c/webappsec/issues/449
[1] https://github.com/w3c/webappsec-subresource-integrity/issue...
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“Outlook just asked me if I want to upgrade to bigger ads?”
Including the hash is exactly what subresource integrity does (even in a CDN context, conveniently enough), but so far people haven’t figured out a sufficiently non-leaky design to use it for caching[1,2].
[1] https://github.com/w3c/webappsec-subresource-integrity/issue...
[2] https://hillbrad.github.io/sri-addressable-caching/sri-addre...
ci
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JS-X-Ray 6.0
i18n (for translation in CI or CLI).
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📦 Everything you need to know: package managers
@nodesecure/ci, a tool allowing to run SAST, SCA and many more analysis in CI/CDs or in a local environment
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Make your JavaScript project safer by using this workflow
@nodesecure/ci brings together a set of tools to identify dependencies vulnerabilities and track most common malicious code and patterns using Static Code Analysis and Vulnerabilities Analysis
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