Symptom:
A vulnerability in the Cisco Discovery Protocol (CDP) subsystem of Cisco Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition..

The vulnerability is due to a failure to properly check for certain NULL values present in a CDP packet. An attacker could exploit this vulnerability by by submitting crafted CDP requests to an affected device. The attacker would then need to convince a user to preform an SNMP poll of the affected MIB.. An attacker that can convince a user to preform an SNMP poll of the affected MIB could trigger a NULL Pointer error that results in a restart of the device.

This vulnerability affects versions 7.5, 7.6.100.0, and 7.6.110.0 only.

Conditions:
Cisco Wireless LAN Controller running an affected version of CDP software.