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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Affected Vendors & Products
References
        | Link | Providers | 
|---|---|
| https://github.com/fluent/fluent-bit/issues/1135 |     | 
History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: mitre
Published: 2019-03-13T19:00:00Z
Updated: 2024-09-16T22:29:41.796Z
Reserved: 2019-03-13T00:00:00Z
Link: CVE-2019-9749
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2019-03-13T19:29:00.297
Modified: 2024-11-21T04:52:13.973
Link: CVE-2019-9749
 Redhat
                        Redhat
                    No data.