Tackling Drupal 7 Security with Subresource Integrity (SRI)

Staff Reporter

Senior Backend Developer Juan Delgado Salmerón shared a story of tackling a pressing security issue in a Drupal 7 project in his recent blog post. The blog post, titled "Subresource Integrity (SRI) in Drupal 7," unravels the challenge and innovative solution that emerged from this endeavor.

It all began when a client requested an improvement in the security of one of their portals running on Drupal 7. To kickstart the process, the client provided a security report that meticulously analyzed the website's headers and elements. This analysis carried out using tools like Security Headers and the Mozilla Observatory, pinpointed vulnerabilities that needed to be addressed.

One particular aspect consistently stood out and presented a significant challenge - the Subresource Integrity (SRI) header. This feature is pivotal in allowing a web browser to determine whether an external resource has been tampered with. It accomplishes this by providing two attributes - Integrity and Crossorigin, which function as a kind of "DNA" for external resources.

In his blog post, Juan Delgado Salmerón takes readers through the complexities of implementing SRI in Drupal 7. The landscape in Drupal 7 differs notably from Drupal 8 and later versions. This journey can become intricate depending on the external resources integrated into the website.

To dive deeper into this intriguing solution and understand how it was applied, read the full blog post here: Subresource Integrity (SRI) in Drupal 7 | JuandeLS3 Drupal blog.

Juan's insights offer a valuable perspective for those looking to bolster security in Drupal 7 and address SRI challenges head-on.

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