CVE-2020-28349
MEDIUMChirpstack Network Server - Improper Input Validation
Title source: ruleDescription
An inaccurate frame deduplication process in ChirpStack Network Server 3.9.0 allows a malicious gateway to perform uplink Denial of Service via malformed frequency attributes in CollectAndCallOnceCollect in internal/uplink/collect.go. NOTE: the vendor's position is that there are no "guarantees that allowing untrusted LoRa gateways to the network should still result in a secure network.
References (3)
Core 3
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/brocaar/chirpstack-network-server/commit/f996bb0c6c85281b5658f59ff09db1b4a73db453
Patch, Third Party Advisory x_refsource_misc
https://github.com/brocaar/chirpstack-network-server/commit/874fc1a9b01045ebe8a340f0bb01ed19e8256e60
Exploit, Third Party Advisory x_refsource_misc
https://www.cyberark.com/resources/threat-research-blog/lorawan-mqtt-what-to-know-when-securing-your-iot-network
Scores
CVSS v3
6.5
EPSS
0.0039
EPSS Percentile
59.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (1)
chirpstack/network_server
3.9.0
Published
Nov 09, 2020
Tracked Since
Feb 18, 2026