Category Archives: Security Blogs

KRACK WPA2 Wi-Fi Vulnerability

A serious security vulnerability in wireless (Wi-Fi) protocol has been identified: KRACK, short for Key Reinstallation Attack. Comprehensive details on the vulnerability and proof-of-concept exploitation video can be found on vulnerability’s official website:  https://www.krackattacks.com/

Great vulnerability summary and what to do:

Monitor & Remediate: 

Assigned CVEs:

  • CVE-2017-13077: Reinstallation of the pairwise encryption key (PTK-TK) in the four-way handshake.
  • CVE-2017-13078: Reinstallation of the group key (GTK) in the four-way handshake.
  • CVE-2017-13079: Reinstallation of the integrity group key (IGTK) in the four-way handshake.
  • CVE-2017-13080: Reinstallation of the group key (GTK) in the group key handshake.
  • CVE-2017-13081: Reinstallation of the integrity group key (IGTK) in the group key handshake.
  • CVE-2017-13082: Accepting a retransmitted Fast BSS Transition (FT) Reassociation Request and reinstalling the pairwise encryption key (PTK-TK) while processing it.
  • CVE-2017-13084: Reinstallation of the STK key in the PeerKey handshake.
  • CVE-2017-13086: reinstallation of the Tunneled Direct-Link Setup (TDLS) PeerKey (TPK) key in the TDLS handshake.
  • CVE-2017-13087: reinstallation of the group key (GTK) while processing a Wireless Network Management (WNM) Sleep Mode Response frame.
  • CVE-2017-13088: reinstallation of the integrity group key (IGTK) while processing a Wireless Network Management (WNM) Sleep Mode Response frame.

List of Affected Vendors:

*Nix Distributions:

Additional References:

 

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