cbcvebase.
CVE-2024-50608
published 2025-02-18

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…

PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.04%
59.6th percentile
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.

Affected

4 ranges
VendorProductVersion rangeFixed in
msrcazl3_fluent-bit_3.1.9-3_on_azure_linux_3.0
msrcazl3_fluent-bit_3.1.9-4_on_azure_linux_3.0
msrccbl2_fluent-bit_3.0.6-2_on_cbl_mariner_2.0
treasuredatafluent_bit

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_msrc7.5HIGH
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