high
8.2
CWE
362
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2024-27983: Race Condition

First published: Tue Apr 02 2024(Updated: )

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.

Credit: support@hackerone.com

Affected SoftwareAffected VersionHow to fix
IBM Cognos Analytics<=12.0.0-12.0.3
IBM Cognos Analytics<=11.2.0-11.2.4 FP4
F5 BIG-IP and BIG-IQ Centralized Management>=17.1.0<=17.1.2
F5 BIG-IP and BIG-IQ Centralized Management>=16.1.0<=16.1.5
F5 BIG-IP and BIG-IQ Centralized Management>=15.1.0<=15.1.10

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2024-27983?

    CVE-2024-27983 is classified as a denial-of-service vulnerability affecting Node.js HTTP/2 servers.

  • How do I fix CVE-2024-27983?

    To mitigate CVE-2024-27983, ensure that your F5 BIG-IP and IBM Cognos Analytics software is updated to the latest patched versions.

  • What products are affected by CVE-2024-27983?

    CVE-2024-27983 affects F5 BIG-IP versions 15.1.0 to 15.1.10, 16.1.0 to 16.1.4, and 17.1.0 to 17.1.1, as well as specific IBM Cognos Analytics versions.

  • Can CVE-2024-27983 lead to data loss?

    CVE-2024-27983 primarily causes service unavailability, and while it may not directly lead to data loss, it can impact service accessibility.

  • What types of attacks exploit CVE-2024-27983?

    CVE-2024-27983 can be exploited through sending a small number of malicious HTTP/2 frames to cause denial of service.

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