Vulnerability CVE-2024-21647


Published: 2024-01-08

Description:
Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. This vulnerability has been fixed in versions 6.4.2 and 5.6.8.

Type:

CWE-444

(Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling'))

 References:
https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2
https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93

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