CyberRota Analysis
AI-GeneratedNanoMQ, an MQTT broker, is vulnerable to a denial-of-service attack due to inefficient handling of User Properties in MQTT v5 packets prior to version 0.24.14. An unauthenticated remote client can exploit this vulnerability by sending numerous properties, leading to excessive CPU usage and potential unresponsiveness of the broker. Organizations using affected versions of NanoMQ should prioritize upgrading to version 0.24.14 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's MQTT v5 property decoder in nng/src/supplemental/mqtt/mqtt_codec.c uses property_append() to walk the entire linked list for each property added by decode_buf_properties(). A remote unauthenticated client can supply a PUBLISH or SUBSCRIBE packet containing many User Properties, causing O(N²) linked-list insertion and CPU work that makes the broker unresponsive; repeated packets can sustain the denial of service. This issue is fixed in version 0.24.14.