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From Silicon Labs: KRACK WPA2 Encryption Protocol Vulnerability

Symmetry Electronics Team in Blogs on October 22, 2017

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.


There has been significant press coverage regarding the KRACK attack on the WPA2 protocol used in most modern Wi-Fi systems. With the attack, the security of WPA2 becomes equivalent of using an open, insecure Wi-Fi network. Any service using secure protocols at higher level, such as HTTPS, TLS etc. are still secure.

We are working on patches for our Wi-Fi products.

In the meantime, the mitigation is to secure the implementations using secure application level protocols, such as HTTPS, TLS etc. This should not only be done due to KRACK, but also because that would protect against open Wi-Fi networks, spoofed access points, or monitoring from ISPs or governments. So all systems should be secured at the application levels regardless of KRACK.


Links for how to use TLS / HTTPS:

https://www.silabs.com/documents/login/application-notes/AN974-WG-TLS-SMTP-Example.pdf

https://docs.zentri.com/zentrios/wz/latest/cmd/apps/tls-client

https://docs.zentri.com/zentrios/wz/latest/cmd/apps/https-server

https://docs.zentri.com/zentrios/wz/latest/cmd/apps/https-intermediate-certs

https://docs.zentri.com/zentrios/wz/latest/cmd/apps/web-page-tls-cert


Links regarding the attack:

https://www.krackattacks.com/

https://www.wired.com/story/krack-wi-fi-iot-security-broken/

https://www.wi-fi.org/news-events/newsroom/wi-fi-alliance-security-update


Source: http://community.silabs.com/t5/Official-Blog-of-Silicon-Labs/KRACK-WPA2-Encryption-Protocol-Vulnerability/ba-p/212787

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Symmetry Electronics Team in Blogs on October 22, 2017

About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by the Berkshire Hathaway company TTI, Inc. in 2017, Symmetry Electronics is headquartered in Los Angeles with international offices in Mexico, Canada, and China.

Why partner with Symmetry Electronics? Symmetry's technical staff is specially trained by our suppliers to provide a comprehensive level of technical support. Our in-house Applications Engineers provide free design services to help customers early in the design cycle, providing solutions to save them time, money and frustration. Contact Symmetry for more information.

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