Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:H/RL:U/RC:C
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A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to insufficient data packet validation. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to the Cisco WLC.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
To exploit this vulnerability, the attacker may need access to trusted, internal networks in which the targeted device may reside to send crafted CAPWAP packets to the device. This access requirement may reduce the likelihood of a successful exploit.
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Customers are advised to consult Cisco bug ID CSCuh81880 for a complete list of affected product versions.
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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 may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators are advised to monitor affected systems.
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Software updates are not available.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2013-Nov-22
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