CVE-2024-27983

2024-04-0901:06:43

hackerone

raw.githubusercontent.com

attacker

node.js

http/2

server

data

memory

race condition

5.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.1%

JSON

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.