VulnerabilityDeferred

CVE-2024-27983

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.

HIGH 8.2EPSS 87.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 87.2%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.0: 8.2 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS: 87.21% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-362
Source: support@hackerone.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.