cvedb.io
CVE-2022-24666
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2022-02-09T23:15:20.233 · Last modified 2026-06-17T04:32:15.237

Summary

A program using swift-nio-http2 is vulnerable to a denial of service attack, caused by a network peer sending a specially crafted HTTP/2 frame. This attack affects all swift-nio-http2 versions from 1.0.0 to 1.19.1. This vulnerability is caused by a logical error when parsing a HTTP/2 HEADERS frame where the frame contains priority information without any other data. This logical error caused confusion about the size of the frame, leading to a parsing error. This parsing error immediately crashes the entire process. Sending a HEADERS frame with HTTP/2 priority information does not require any special permission, so any HTTP/2 connection peer may send such a frame. For clients, this means any server to which they connect may launch this attack. For servers, anyone they allow to connect to th

Affected products

apple — swiftnio_http\/2

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.