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HTTP Request Smuggling Affecting tornado package, versions [,6.3.3)

0.0
medium

Snyk CVSS

    Attack Complexity High

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  • Snyk ID SNYK-PYTHON-TORNADO-5840803
  • published 15 Aug 2023
  • disclosed 14 Aug 2023
  • credit kenballus
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Introduced: 14 Aug 2023

CVE NOT AVAILABLE CWE-444 Open this link in a new tab

How to fix?

Upgrade tornado to version 6.3.3 or higher.

Overview

tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.

Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper parsing of the -, +, and _ characters in chunk length and Content-Length fields through the int constructor.

Note: Exploiting this vulnerability is possible if Tornado is deployed behind certain proxies that interpret non-standard characters differently, such as older versions of haproxy.