Description
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when serving files through Active Storage's proxy delivery mode, the proxy controller loads the entire requested byte range into memory before sending it. A request with a large or unbounded Range header (e.g. `bytes=0-`) could cause the server to allocate memory proportional to the file size, possibly resulting in a DoS vulnerability through memory exhaustion. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
rails activestorage
>= 8.1.0.beta1, < 8.1.2.1affected>= 8.0.0.beta1, < 8.0.4.1affected< 7.2.3.1affected
References
- https://github.com/rails/rails/security/advisories/GHSA-r46p-8f7g-vvvg ↗
- https://github.com/rails/rails/commit/2cd933c366b777f873d4d590127da2f4a25e4ba5 ↗
- https://github.com/rails/rails/commit/42012eaaa88dfc7d0030161b2bc8074a7bbce92a ↗
- https://github.com/rails/rails/commit/8159a9c3de3f27a2bcf2866b8bf9ceb9075e229b ↗
- https://github.com/rails/rails/releases/tag/v7.2.3.1 ↗
- https://github.com/rails/rails/releases/tag/v8.0.4.1 ↗
- https://github.com/rails/rails/releases/tag/v8.1.2.1 ↗