On October 16, 2017, a research paper with the title “Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2rdquo; was made publicly available.

This paper discusses seven vulnerabilities affecting session key negotiation in both the Wi-Fi Protected Access (WPA) and the Wi-Fi Protected Access II (WPA2) protocols.

These vulnerabilities may allow the reinstallation of a pairwise transient key, a group key, or an integrity key on either a wireless client or a wireless access point.

Additional research also led to the discovery of three additional vulnerabilities (not discussed in the original paper) affecting wireless supplicant supporting either the 802.11z (Extensions to Direct-Link Setup) standard or the 802.11v (Wireless Network Management) standard.

The three additional vulnerabilities could also allow the reinstallation of a pairwise key, group key, or integrity group key.

Among these ten vulnerabilities, only one (CVE-2017-13082) may affect components of the wireless infrastructure (for example, Access Points), while the other nine vulnerabilities may affect only client devices.

Multiple Cisco wireless products are affected by these vulnerabilities.

Cisco will release software updates that address these vulnerabilities.

There are workarounds that addresses the vulnerabilities in CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, and CVE-2017-13082.

There are no workarounds for CVE-2017-13086, CVE-2017-13087, and CVE-2017-13088.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171016-wpa

Security Impact Rating: High

CVE: CVE-2017-13077,CVE-2017-13078,CVE-2017-13079,CVE-2017-13080,CVE-2017-13081,CVE-2017-13082,CVE-2017-13084,CVE-2017-13086,CVE-2017-13087,CVE-2017-13088

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