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CVE-2024-27983

HIGHCVSS 8.2/10EPSS 87.21%

Last modified

CVE-2024-27983 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 87.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.0
8.2/10

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

EPSS Probability
87.21%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
NodeJSNode>= 4.0, < 4.*; >= 5.0, < 5.*; >= 6.0, < 6.*; >= 7.0, < 7.*; >= 8.0, < 8.*; >= 9.0, < 9.*; >= 10.0, < 10.*; >= 11.0, < 11.*; >= 12.0, < 12.*; >= 13.0, < 13.*; >= 14.0, < 14.*; >= 15.0, < 15.*; >= 16.0, < 16.*; >= 17.0, < 17.*; >= 18.0, < 18.20.1; >= 19.0, < 19.*; >= 20.0, < 20.12.1; >= 21.0, < 21.7.2

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is 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. 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.
How severe is CVE-2024-27983?
CVE-2024-27983 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 87.21% probability of exploitation in the next 30 days.
How do I fix CVE-2024-27983?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST