Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24790.json",
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-444"
]
}