An attacker can make the Node.js HTTP/2 server completely unavailable by sending a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside. It is possible to leave some data in nghttp2 memory after reset when headers with HTTP/2 CONTINUATION frame are sent to the server and then a TCP connection is abruptly closed by the client triggering the Http2Session destructor while header frames are still being processed (and stored in memory) causing a race condition.
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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2024-04-09T01:06:43.681Z

Updated: 2024-08-22T20:11:34.436Z

Reserved: 2024-02-29T01:04:06.641Z

Link: CVE-2024-27983

cve-icon Vulnrichment

Updated: 2024-08-02T00:41:55.943Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-09T01:15:49.197

Modified: 2024-06-10T17:16:24.277

Link: CVE-2024-27983

cve-icon Redhat

Severity : Important

Publid Date: 2024-04-03T00:00:00Z

Links: CVE-2024-27983 - Bugzilla