Vulnerability Details

Cisco Aironet Access Points Multiple WPA2 Vulnerabilities

Published: 2017-10-17 02:54:27
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:A/AC:L/Au:N/C:P/I:P/A:P

Detection Type:
Remote Banner

Solution Type:
Vendor Patch

Detection Method:
Checks if a vulnerable version is present on the target host.

Summary:
Cisco Aironet Access Points are prone to key reinstallation attacks against WPA protocol.

Technical Details:
On October 16th, 2017, a research paper with the title of 'Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2' 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.

Impact:
An attacker within the wireless communications range of an affected AP and client may leverage packet decryption and injection, TCP connection hijacking, HTTP content injection, or the replay of unicast, broadcast, and multicast frames.

Recommendations:
See the referenced advisory for a solution.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2017-13082

References:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171016-wpa

Severity
Medium
CVSS Score
5.8
Published
2017-10-17
Modified
2018-10-26
Category
CISCO

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