Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.
{ "nvd_published_at": "2017-09-05T17:29:00Z", "cwe_ids": [ "CWE-400" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2022-06-17T21:35:13Z" }