T08 · Insecure Dependencies
Warning
- Location
assets/template.html:7- Finding
Unverified Third-Party JavaScript Dependency
- Content
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``` ### Technical Analysis The presentation template loads and executes JavaScript directly from an external CDN. The script element does not specify a Subresource Integrity (`integrity`) hash, so the browser cannot verify that the downloaded resource matches a reviewed version. The document also has no restrictive Content Security Policy to limit script execution or outbound connections. Although the URL contains a version identifier, the effective payload remains controlled by the remote server. A compromise of the CDN, its publishing pipeline, DNS resolution, or the referenced resource could cause modified JavaScript to execute whenever a generated presentation is opened. This is classified as an insecure dependency because generated presentations depend on an unverified third-party executable component. ### Attack Path 1. An attacker compromises the CDN, its content-publishing process, DNS resolution, or another component capable of modifying the response for the referenced URL. 2. The attacker replaces the expected Tailwind script with malicious JavaScript. 3. A user opens an HTML presentation generated from this template while connected to the network. 4. The browser retrieves the altered script because the presentation explicitly trusts the external URL. 5. No integrity hash is present, so the browser executes the altered response without detecting that its contents have changed. 6. The malicious script can read or modify presentation DOM content, monitor user interaction, issue network requests, redirect the page, or display deceptive content within t ...[truncated 678 chars]- Remediation
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``` 3. Add a restrictive Content Security Policy. Prefer a policy that disallows remote scripts entirely when resources are embedded: ```html ``` Where possible, replace inline JavaScript with a hashed or nonce-authorized script and remove `'unsafe-inline'`. 4. Self-host or embed font resources as well, reducing external network dependencies and preventing unnecessary metadata disclosure. 5. Review and pin all third-party assets, record their expected cryptographic hashes, and periodically verify them through a controlled dependency-update process. ]]>