CVE-2021-37604 Denial of service in n/a
Attackers can cause denial of service in Microchip MiWi networks by injecting messages with invalid payloads that prematurely update frame counters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-37604?
CVE-2021-37604 is a high-severity denial of service vulnerability in n/a, published on 5 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In version 6.5 of Microchip MiWi software and all previous versions including legacy products, there is a possibility of frame counters being validated/updated prior to the message authentication. With this vulnerability in place, an attacker may increment the incoming frame counter values by injecting messages with a sufficiently large frame counter value and invalid payload. This results in denial of service/valid packets in the network. There is also a possibility of a replay attack in the stack.
Weakness: CWE-670
Which versions are affected by CVE-2021-37604?
It affects 1 product.
Products include Microchip Miwi.
How do I fix CVE-2021-37604?
No fix has been published for CVE-2021-37604 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-2021-37604 being exploited?
There is no known exploitation of CVE-2021-37604 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-j2ff-q83x-c7pm.