Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames

Summary

Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames (CVE-2024-27316)

Severity: Moderate

HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.

Acknowledgements: finder: Bartek Nowotarski (https://nowotarski.info/)

Full Security Advisory: https://httpd.apache.org/security/vulnerabilities_24.html