Subresource Integrity (SRI) implemented, but external scripts are loaded over http

Nash N Sulthan

Published on

19 Jun 2018

SRI

Subresource Integrity (SRI) is a W3C recommendation to provide a method to protect website delivery. Sub resource Integrity (SRI) provides a mechanism to check integrity of the resource hosted by third parties interface plug-ins like Content Delivery Networks (CDNs) and verifies that the fetched resource has been delivered to the user without unexpected manipulation. This ensures these assets have not been compromised for hostile purposes. Subresource Integrity (SRI) implemented, but in this server the external scripts are loaded over HTTP.

Impact

An attacker can gain access to Content Delivery Networks and cause huge damage the application. If the attacker is one of the persons who had developed one of the CDN used by the application. He can gain access to your system by tweaking the content from CDN.

Mitigation / Precaution

It is recommended to implement Sub resource Integrity correctly.

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