CVE-2020-28349

Public Exploit

Description

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.52%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory cyberark.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/brocaar/chirpstack-network-server/commit/f996bb0c6c85281b5658f59ff09db1b4a73db453 third party advisory patch
https://github.com/brocaar/chirpstack-network-server/commit/874fc1a9b01045ebe8a340f0bb01ed19e8256e60 third party advisory patch
https://www.cyberark.com/resources/threat-research-blog/lorawan-mqtt-what-to-know-when-securing-your-iot-network third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-28349?
CVE-2020-28349 has been scored as a medium severity vulnerability.
How to fix CVE-2020-28349?
To fix CVE-2020-28349, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-28349 being actively exploited in the wild?
It is possible that CVE-2020-28349 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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