CVE-2021-1312 MEDIUM

CVE-2021-1312: Cisco Elastic Services Controller Denial of Service Vulnerability

Vendor Cisco
Product Cisco Elastic Services Controller
Weakness CWE-400
Published January 20, 2021
Last update November 12, 2024

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

A vulnerability in the system resource management of Cisco Elastic Services Controller (ESC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) to the health monitor API on an affected device. The vulnerability is due to inadequate provisioning of kernel parameters for the maximum number of TCP connections and SYN backlog. An attacker could exploit this vulnerability by sending a flood of crafted TCP packets to an affected device. A successful exploit could allow the attacker to block TCP listening ports that are used by the health monitor API. This vulnerability only affects customers who use the health monitor API.

Key dates

02Disclosure timeline

January 20, 2021 CVE published
November 12, 2024 Record updated