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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References
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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
Vulnrichment
Updated: 2024-08-02T00:41:55.943Z
NVD
Status : Awaiting Analysis
Published: 2024-04-09T01:15:49.197
Modified: 2024-11-21T09:05:33.613
Link: CVE-2024-27983
Redhat