CVE Vulnerabilities

CVE-2017-3854

Improper Authentication

Published: Mar 15, 2017 | Modified: Sep 14, 2021
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
8.3 HIGH
AV:A/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the mesh code of Cisco Wireless LAN Controller (WLC) software could allow an unauthenticated, remote attacker to impersonate a WLC in a meshed topology. The vulnerability is due to insufficient authentication of the parent access point in a mesh configuration. An attacker could exploit this vulnerability by forcing the target system to disconnect from the correct parent access point and reconnect to a rogue access point owned by the attacker. An exploit could allow the attacker to control the traffic flowing through the impacted access point or take full control of the target system. This vulnerability affects the following products running a vulnerable version of Wireless LAN Controller software and configured for meshed mode: Cisco 8500 Series Wireless Controller, Cisco 5500 Series Wireless Controller, Cisco 2500 Series Wireless Controller, Cisco Flex 7500 Series Wireless Controller, Cisco Virtual Wireless Controller, Wireless Services Module 2 (WiSM2). Note that additional configuration is needed in addition to upgrading to a fixed release. Cisco Bug IDs: CSCuc98992 CSCuu14804.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Name Vendor Start Version End Version
Wireless_lan_controller_firmware Cisco 8.0.72.140 (including) 8.0.72.140 (including)
Wireless_lan_controller_software Cisco 6.0199.4 (including) 6.0199.4 (including)
Wireless_lan_controller_software Cisco 7.41.54 (including) 7.41.54 (including)
Wireless_lan_controller_software Cisco 7.0220.0 (including) 7.0220.0 (including)
Wireless_lan_controller_software Cisco 7.0250.0 (including) 7.0250.0 (including)
Wireless_lan_controller_software Cisco 16.088.0 (including) 16.088.0 (including)

Potential Mitigations

References