Vanhoef has published his findings in a detailed research paper, Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2. 1 at the Computer and Communications Security conference in Dallas, and in December at Black Hat Europe in London.
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On Android and Linux devices, however, an attacker can typically obtain a complete copy of all communications.
"This is because Android and Linux can be tricked into (re)installing an all-zero encryption key," he says, which makes it easy to decrypt all communications on the fly.
The attack works against all modern protected Wi-Fi networks." The U. Computer Emergency Response Team issued a Sunday alert about the threat of key reinstallation attacks against WPA2.
"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," US-CERT's alert reads.
While this is the first attack against WPA2 that works without guessing passwords, many security researchers say they are not surprised that a serious flaw has been found in WPA2.
"Keep calm," Alex Hudson, CTO at London-based digital services subscription firm Iron Group, says in a blog post reacting to the news.Vanhoef says his findings center on 10 specific flaws, each of which has been assigned a Common Vulnerabilities and Exposures identifier and help track affected products.He says each vulnerability represents a unique key reinstallation attack and that many vendors' products will be vulnerable to multiple CVEs."It's clear to me that 'internet of things' type devices will be the hardest hit," he says."Devices with embedded Wi Fi for secondary functional purposes, like TVs and baby monitors, are unlikely to get proper updates.Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products.