CVE-2024-27983

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.

References

https://www.bleepingcomputer.com/news/security/new-http-2-dos-attack-can-crash-web-servers-with-a-single-connection/?&web_view=true

https://securityaffairs.com/161520/security/http-2-continuation-flood-attack.html

https://www.bleepingcomputer.com/news/security/new-http-2-dos-attack-can-crash-web-servers-with-a-single-connection/

https://nowotarski.info/http2-continuation-flood/

https://kb.cert.org/vuls/id/421644

https://lists.fedoraproject.org/archives/list/[email protected]/message/YDVFUH7ACZPYB3BS4SVILNOY7NQU73VW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JDECX4BYZLMM4S4LALN4DPZ2HUTTPLKE/

https://hackerone.com/reports/2319584

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3