CVE-2024-4323: fluent bit Heap Overflow

Description

A memory corruption vulnerability in Fluent Bit versions 2.0.7 thru 3.0.3. This issue lies in the embedded http server’s parsing of trace requests and may result in denial of service conditions, information disclosure, or remote code execution.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
treasuredata	fluent_bit	2.0.7 — 2.2.3
treasuredata	fluent_bit	3.0.0 — 3.0.4

References

Advisories & Patches

https://github.com/fluent/fluent-bit/commit/9311b43a258352797af40749ab31a63c32acfd04 https://tenable.com/security/research/tra-2024-17 https://github.com/fluent/fluent-bit/commit/9311b43a258352797af40749ab31a63c32acfd04 https://tenable.com/security/research/tra-2024-17

Exploits

https://www.vicarius.io/vsociety/posts/linguistic-lumberjack-memory-corruption-in-fluent-bit-cve-2024-4323

Frequently Asked Questions

What is CVE-2024-4323? +

A memory corruption vulnerability in Fluent Bit versions 2.0.7 thru 3.0.3. This issue lies in the embedded http server’s parsing of trace requests and may result in denial of service conditions, information disclosure, or remote code execution. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-4323? +

CVE-2024-4323 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-4323? +

CVE-2024-4323 affects products from treasuredata, specifically: fluent_bit. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-4323? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-4323