Vulnerability in Tornado Framework Leads to High CPU Consumption

CVE-2024-52804

What is CVE-2024-52804?

The Tornado framework, a popular Python web framework and asynchronous networking library, exhibits a vulnerability in its HTTP cookie parsing mechanism prior to version 6.4.2. This flaw can lead to excessive CPU usage when maliciously crafted cookie headers are processed. The algorithm's inefficiency may cause significant delays in handling requests as it operates within the event loop thread, potentially leading to a denial-of-service condition. Users of Tornado are advised to upgrade to version 6.4.2 or later to mitigate this issue.

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