CVE-2024-50609

published 2025-02-18

CVE-2024-50609: An issue was discovered in Fluent Bit 3.1.9. When the OpenTelemetry input plugin is running and listening on an IP address and port, one can send a packet with…

Priority P3 40 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

An issue was discovered in Fluent Bit 3.1.9. When the OpenTelemetry 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_traces_proto_ng() at opentelemetry_prot.c.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
msrc	azl3_fluent-bit_3.1.9-3_on_azure_linux_3.0	—	—
msrc	azl3_fluent-bit_3.1.9-4_on_azure_linux_3.0	—	—
msrc	cbl2_fluent-bit_3.0.6-2_on_cbl_mariner_2.0	—	—
treasuredata	fluent_bit	—	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

vendor_msrc 7.5 HIGH

vendor_oracle 4.5 HIGH

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