Vulnerability Details CVE-2021-37604
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 64.1%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf
- https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads
- https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability
- https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol
- https://www.microchip.com/product-change-notifications/#/
- https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf
- https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads
- https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability
- https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol
- https://www.microchip.com/product-change-notifications/#/