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

I’d like to report Apache httpd vulnerability (CVE-2024-27316) that was recently fixed.

• Advisory: https://httpd.apache.org/security/vulnerabilities_24.html

Impact

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.