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m3n4.net November 25, 2017


Wi-Fi Devices Vulnerable to KRACK Attacks: Your 10-Point Cheatsheet

18 October 2017, 12:22 | Antoinette Holland

WPA2 Flaw Means Almost Every Phone, PC and Router Is At Risk

Protocol-level security flaws in WPA2 may affect ALL Wi-Fi devices!

If an attacker is in range, he can use key reinstallation attacks (KRACKs) to exploit the weakness in the WPA2 protocol.

The US-CERT researchers noted that 41 percent of all the Android devices are vulnerable to an "exceptionally devastating" form of the Wi-Fi attack. "For example, an attacker might be able to inject ransomware or other malware into websites".

Consumers should act just as quickly to patch their phones, laptops, Wi-Fi base stations, and other gear.

A severe security flaw has put at risk all data transmitted over Wi-Fi all over the world.

Pretty sneaky, Microsoft. While some vendors were scrambling to release updates to fix the KRACK Attack vulnerability released today, Microsoft, quietly snuck the fix into last week's Patch Tuesday.

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Android 6.0 and above, along with many Linux variants, use a newer version of the wpa_supplicant application that is the vector for this variation of the attack.

The vulnerability consists of a weakness in the WPA2 protocol, which is a vital part of every WiFi network because it secures all networks. "But one would need to be careful about using public Wi-Fi", says Bhattacharya, also a "bug bounty" hunter. By spamming a network with authentication requests, a hacker could look at all the responses and draw a conclusion about the content of the keys, thereby breaking its protections.

The Wi-Fi Alliance, an industry group which sets standards for wireless connections, said computer users should not panic.

Attackers can exploit the flaw in WPA2 - the name for the encryption protocol - "to read information that was previously assumed to be safely encrypted", said a blog post by KU Leuven researchers.

Now since the vulnerability is so widespread, tech giants will have to speed up the patch process and issue updates to their users as soon as possible.

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4. Disable Wi-Fi on your devices and turn off your router.

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I don't see this becoming a major threat to most users unless and until we start seeing the availability of easy-to-use attack tools to exploit this flaw.

All WiFi users are advised to update their devices to the latest security update as soon as it's available.

This padlock will appear on all HTTPS sites. Apple, Android and Windows software are all susceptible to some version of the vulnerability, which is not fixed by changing Wi-Fi passwords.

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