Cisco Wireless LAN Controller contains a vulnerability that could allow an authenticated, remote attacker to create a denial of service condition. Updates are not available.
A vulnerability in the web framework of the Cisco Wireless LAN Controller (WLC) could allow an authenticated, remote attacker to create a denial of service (DoS) condition.
The vulnerability is due to improper input validation of configuration parameters. An attacker could exploit this vulnerability by sending a crafted HTTP request to the Cisco WLC.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
At the time this alert was first published, Cisco WLC versions 7.4.110 and prior were vulnerable. Later releases of Cisco WLC may also be vulnerable.
To exploit this vulnerability, an attacker would need to authenticate to the targeted device in order to send crafted HTTP requests to the vulnerable system. This access requirement decreases the likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
Cisco has released a security notice at the following link: CVE-2013-6684
Customers are advised to consult Cisco bug ID CSCuh81011 for the most complete list of affected product versions.
An authenticated, remote attacker could exploit this vulnerability to cause an affected device to crash or become unresponsive, resulting in a DoS condition.
The vulnerability is due to improper input validation of configuration parameters by an affected Cisco WLC.
An authenticated, remote attacker could exploit this vulnerability by sending a crafted HTTP request to the Cisco WLC on a targeted device. If successful, the attacker could have the ability to create a DoS condition on the targeted device.
Administrators are advised to contact the vendor regarding future updates and releases.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to monitor affected systems.
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.