Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XTornadoweb Tornado
APPTornadoweb< 6.5.5
Related vulnerabilities
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite argumen...
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single m...
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an ineffic...
Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form-data`` ...
Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP coo...