Rails is a web-application framework. Starting in version 7.1.0, there is a possible ReDoS vulnerability in the Accept header parsing routines of Action Dispatch. This vulnerability is patched in 7.1.3.1. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected.
Weakness
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Rails | Rubyonrails | 7.1.0 (including) | 7.1.3.1 (excluding) |
| Rails | Ubuntu | bionic | * |
| Rails | Ubuntu | esm-apps/xenial | * |
| Rails | Ubuntu | focal | * |
| Rails | Ubuntu | mantic | * |
| Rails | Ubuntu | oracular | * |
| Rails | Ubuntu | plucky | * |
| Rails | Ubuntu | questing | * |
| Rails | Ubuntu | trusty | * |
| Rails | Ubuntu | xenial | * |
| Rails-4.0 | Ubuntu | trusty | * |
| Ruby-actionpack-3.2 | Ubuntu | trusty | * |
| Ruby-activemodel-3.2 | Ubuntu | trusty | * |
| Ruby-activerecord-3.2 | Ubuntu | trusty | * |
| Ruby-activesupport-3.2 | Ubuntu | trusty | * |
| Ruby-rails-3.2 | Ubuntu | trusty | * |
Potential Mitigations
Related Attack Patterns
References
- https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946
- https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272
- https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wq
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.yml
- https://security.netapp.com/advisory/ntap-20240503-0003/
- https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946
- https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272
- https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wq
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.yml
- https://security.netapp.com/advisory/ntap-20240503-0003/