Attacker Can Cause Complete Unavailability of Node.js HTTP/2 Server with Small Amount of Frames
CVE-2024-27983
Key Information:
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What is CVE-2024-27983?
The Node.js HTTP/2 server is vulnerable to a service disruption attack that can be triggered by sending a small quantity of HTTP/2 frames. This flaw arises when the server encounters unexpected behavior during the processing of CONTINUATION frames, coupled with sudden TCP connection termination by clients. This scenario leads to a race condition as some data might persist in nghttp2 memory during the Http2Session destructor execution while header frames are still being handled. Consequently, this vulnerability exposes users to potential denial of service, severely affecting the availability of the affected server.
Affected Version(s)
Node 4.0 < 4.*
Node 5.0 < 5.*
Node 6.0 < 6.*
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
72% chance of being exploited in the next 30 days.
CVSS V3.1
CVSS V3.0
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published