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No exploitation reportedFix available

CVE-2024-50608

No exploitation reported by the sources we read.

  • Published2025-02-18
  • Fixed in3.1.10
  • 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

An issue was discovered in Fluent Bit 3.1.9. When the Prometheus Remote Write input plugin is running and listening on an IP address and port, one can send a packet with Content-Length: 0 and it crashes the server. Improper handling of the case when Content-Length is 0 allows a user (with access to the endpoint) to perform a remote Denial of service attack. The crash happens because of a NULL pointer dereference when 0 (from the Content-Length) is passed to the function cfl_sds_len, which in turn tries to cast a NULL pointer into struct cfl_sds. This is related to process_payload_metrics_ng() at prom_rw_prot.c.

Timeline

dates in UTC
  1. 2025-02-1818:15CVE publishedNVD

Versions per branch

OSV · NVD
fluent-bit
BranchAffectedFixed in
3.1≥ 3.1.9, < 3.1.103.1.10
Treasuredata fluent bit
BranchAffectedFixed in
3.1= 3.1.9no fix published

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:3all versions · fixed in 3.1.9-3
  • fluent-bitAzure Linux:2all versions · fixed in 3.0.6-2

Vendor advisories

  • CVE-2024-50608 Red Hat Product Security

    fluent-bit: DoS via NULL pointer dereference

Full record on NVD

Fix

  1. Update fluent-bit to 3.1.10

Advisories and patches

Detection

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
2025-02-18
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-x9j4-33qm-hgjp

Frequently asked questions

What is CVE-2024-50608?

An issue was discovered in Fluent Bit 3.1.9. When the Prometheus Remote Write input plugin is running and listening on an IP address and port, one can send a packet with Content-Length: 0 and it crashes the server. Improper handling of the case when Content-Length is 0 allows a user (with access to the endpoint) to perform a remote Denial of service attack. The crash happens because of a NULL pointer dereference when 0 (from the Content-Length) is passed to the function cfl_sds_len, which in turn tries to cast a NULL pointer into struct cfl_sds. This is related to process_payload_metrics_ng() at prom_rw_prot.c.

Is CVE-2024-50608 actively exploited?

Active exploitation of CVE-2024-50608 has not been confirmed. Its EPSS score was 1.1% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-50608?

CVE-2024-50608 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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