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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | netdata | 1.33.1-1ubuntu1+esm1 | USN-7250-1 |
| Ubuntu Pro 20.04 LTS | netdata | 1.19.0-3ubuntu1+esm1 | USN-7250-1 |
| Ubuntu Pro 18.04 LTS | netdata | 1.9.0+dfsg-1ubuntu0.1~esm1 | USN-7250-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | fluent-bit | 2.2.2-1 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
alexcote1/CVE-2024-23722-poc ★ 3 · Mar 25, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- USN-7250-1 netdata vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- WID-SEC-2024-0715 Fluent Bit: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 2, 2025
- NCSC-2024-0339 Kwetsbaarheden verholpen in Microsoft Mariner NCSC-NL (Netherlands) · Aug 13, 2024