CVE-2019-1814 MEDIUM

CVE-2019-1814: Cisco Small Business 300 Series Managed Switches DHCP Denial of Service Vulnerability

Vendor Cisco
Product Cisco Small Business 300 Series Managed Switches
Weakness CWE-400
Published May 15, 2019
Last update November 21, 2024

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device.

Key dates

02Disclosure timeline

May 15, 2019 CVE published
November 21, 2024 Record updated