Denial of Service vuln in web UI of Cisco Small Business Switches

Overview :

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

Affected Product(s) :

This vulnerability affects the following Cisco products if they are running a firmware release earlier than 1.3.7.18:

200 Series Smart Switches
300 Series Managed Switches
500 Series Stackable Managed Switches

Vulnerability Details :

CVE ID :	CVE-2020-3147
	The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. This vulnerability affects firmware releases prior than 1.3.7.18

Solution :

Cisco fixed this vulnerability in firmware Release 1.3.7.18 for the following Cisco products:

200 Series Smart Switches
300 Series Managed Switches
500 Series Stackable Managed Switches

To download the firmware from the Software Center on Cisco.com, do the following:

Click Browse all.
Choose Switches > LAN Switches – Small Business.
Choose a specific product from the right pane of the product selector.
Choose Smart Switch Firmware or Switch Firmware.
Choose a release from the left pane of the page.

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