KRACK attack on WPA2

[Johannes_Dennin]

Hello everyone,
I have some questions due to the expected disclosure today on the attack possible on WPA2 SSIDs.

US-CERT has become aware of several key management vulnerabilities in the 4-way handshake of the Wi-Fi Protected Access II (WPA2) security protocol. The impact of exploiting these vulnerabilities includes decryption, packet replay, TCP connection hijacking, HTTP content injection, and others. Note that as protocol-level issues, most or all correct implementations of the standard will be affected. The CERT/CC and the reporting researcher KU Leuven, will be publicly disclosing these vulnerabilities on 16 October 2017.

Link: https://arstechnica.com/information-technology/2017/10/severe-flaw-in-wpa2-protocol-leaves-wi-fi-tra...

- Is Extreme aware of this?
- Are Fixes ready to be released?
- Is a software fix sufficient or does hardware need to be replaced?

Thanks and best regards,

Johannes

[M_Nees]

Putting a small statment to stay up to date regarding this topic.

[Drew_C]

For others who are interested, the "follow" button at the top-right side of the page has the same effect 😉

[StephanH]

In the described attack, a rough ap on a different channel is used to reinstall an already-in-use key. Therefore AirDefense and Radar can help to recognize the attacker (rough ap) and prevent clients to contact such an rough ap. This wil not solve the root cause but can reduce the possible attack area.

[Drew_C]

I went ahead and published a preliminary Vulnerability Notice for KRACK. There's not much content right now, so we'll be updating it as more info comes in from various teams.

VN 2017-005 - KRACK, WPA2 Protocol Flaw

[Drew_C]

Hi James, I added some ADSP information to the article earlier this morning. It's in the repair recommendations section.