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Public proof of conceptFix available

CVE-2024-23722

A public proof of concept exists; no exploitation attested.

  • Published2024-03-26
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Timeline

dates in UTC
  1. 2024-03-2615:15CVE publishedNVD

Versions per branch

CISA-ADP · NVD · OSV
Fluent fluent bit
BranchAffectedFixed in
2.x≥ 2.1.8, ≤ 2.2.1no fix published
Treasuredata fluent bit
BranchAffectedFixed in
2.x≥ 2.1.8, < 2.2.22.2.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • fluent-bitAzure Linux:2all versions · fixed in 2.2.2-1
  • netdataUbuntu:Pro:22.04:LTSall versions · fixed in 1.33.1-1ubuntu1+esm1
  • netdataUbuntu:Pro:20.04:LTSall versions · fixed in 1.19.0-3ubuntu1+esm1
  • netdataUbuntu:Pro:18.04:LTSall versions · fixed in 1.9.0+dfsg-1ubuntu0.1~esm1

Vendor advisories

  • CVE-2024-23722 Red Hat Product Security

    fluent-bit: NULL pointer dereference leads to server crash

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2024-03-26
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-7x4x-j7vx-3p29

Frequently asked questions

What is CVE-2024-23722?

In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

Is CVE-2024-23722 actively exploited?

A proof-of-concept exploit exists for CVE-2024-23722, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2024-23722?

CVE-2024-23722 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record