Security Advisory

CVE-2019-9749

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2019-03-13 19:00:00

Last updated 2024-09-16 22:29:41

Assigner mitre

CVSS score not scored

State PUBLISHED

Description

An issue was discovered in the MQTT input plugin in Fluent Bit through 1.0.4. When this plugin acts as an MQTT broker (server), it mishandles incoming network messages. After processing a crafted packet, the plugin's mqtt_packet_drop function (in /plugins/in_mqtt/mqtt_prot.c) executes the memmove() function with a negative size parameter. That leads to a crash of the whole Fluent Bit server via a SIGSEGV signal.

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