CVE-2020-28349 Denial of service in n/a
A malicious gateway can cause Denial of Service in ChirpStack Network Server by sending malformed frequency attributes, exploiting inaccurate frame deduplication.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-28349?
CVE-2020-28349 is a medium-severity denial of service vulnerability in n/a, published on 9 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2020-28349?
It affects 1 product.
Products include Chirpstack Network Server.
How do I fix CVE-2020-28349?
No fix has been published for CVE-2020-28349 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-28349 being exploited?
There is no known exploitation of CVE-2020-28349 in the wild and no public exploit code.
Sources
Also known as GHSA-xrpw-hmf5-ch3x.