CVE-2019-1814: cisco cisco small business 300 series managed switches Uncontrolled Resource Consumption

Vulnerability summary

CVE-2019-1814 is a high (CVSS 8.6) Uncontrolled Resource Consumption vulnerability in cisco cisco small business 300 series managed switches. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.6% of scored vulnerabilities.

Timeline

1. 15-05-2019
   PublishedVulnerability first disclosed.
2. 21-11-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
• CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.