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Cisco issues variety of security warnings on wireless gear

Michael Cooney | April 6, 2017
Cisco issues one critical warning for vulnerability in Aironet 1830 Series and 1850 Series Access Points.

Cisco has released software updates that address this vulnerability.

The last warning came for a vulnerability in RADIUS Change of Authorization (CoA) request processing in the Cisco Wireless LAN Controller (WLC). This flaw could let an unauthenticated, remote attacker cause a denial of service (DoS) condition by disconnecting a single connection.

Cisco wrote: “The vulnerability is due to lack of proper input validation of the RADIUS CoA packet header. An attacker could exploit this vulnerability by sending a crafted RADIUS CoA packet to a targeted device. A successful exploit could allow the attacker to disconnect a connection through the WLC unexpectedly,” Cisco wrote.

In this case, there are no workarounds available, Cisco said.

 

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