There is a possible DoS vulnerability in the multipart parser in Rack before 2.0.6. Specially crafted requests can cause the multipart parser to enter a pathological state, causing the parser to use CPU resources disproportionate to the request size.
| Software | From | Fixed in |
|---|---|---|
| rack_project / rack | 2.0.5 | 2.0.5.x |
| rack_project / rack | 2.0.4 | 2.0.4.x |
rack
|
2.0.4 | 2.0.6 |