CVE-2018-0443

Cisco Wireless LAN Controller Software Control and Provisioning of Wireless Access Points Protocol Denial of Service Vulnerability

Description

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper input validation on fields within CAPWAP Discovery Request packets by the affected device. An attacker could exploit this vulnerability by sending malicious CAPWAP Discovery Request packets to the Cisco WLC Software. A successful exploit could allow the attacker to cause the Cisco WLC Software to disconnect associated access points (APs). While the APs disconnect and reconnect, service will be unavailable for a brief period of time, resulting in a DoS condition.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.29% Top 25%
Vendor Advisory cisco.com
Affected: Cisco Cisco Wireless LAN Controller (WLC)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-dos vendor advisory
http://www.securitytracker.com/id/1041922 vdb entry third party advisory
http://www.securityfocus.com/bid/105686 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-0443?
CVE-2018-0443 has been scored as a high severity vulnerability.
How to fix CVE-2018-0443?
To fix CVE-2018-0443, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0443 being actively exploited in the wild?
It is possible that CVE-2018-0443 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0443?
CVE-2018-0443 affects Cisco Cisco Wireless LAN Controller (WLC).
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