Vulnerabilities > CVE-2021-1312 - Unspecified vulnerability in Cisco Elastic Services Controller

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

cisco

NVD

Published: 2021-01-20

Updated: 2024-11-21

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Cisco Cisco Elastic Services Controller 1.0 Cisco Elastic Services Controller 1.0.0 Cisco Elastic Services Controller 1.1 Cisco Elastic Services Controller 1.1.0 Cisco Elastic Services Controller 2.0 Cisco Elastic Services Controller 2.1 Cisco Elastic Services Controller 2.1.0 Cisco Elastic Services Controller 2.1.5 Cisco Elastic Services Controller 2.2 Cisco Elastic Services Controller 2.2.0 Cisco Elastic Services Controller 2.2.8 Cisco Elastic Services Controller 2.2.9 Cisco Elastic Services Controller 2.3 Cisco Elastic Services Controller 2.3.0 Cisco Elastic Services Controller 2.3.1 Cisco Elastic Services Controller 2.3.2 Cisco Elastic Services Controller 3.0 Cisco Elastic Services Controller 3.1 Cisco Elastic Services Controller 4.0 Cisco Elastic Services Controller 4.1 Cisco Elastic Services Controller 4.1.0.100 Cisco Elastic Services Controller 4.1.0.111 Cisco Elastic Services Controller 4.2 Cisco Elastic Services Controller 4.2.0.74 Cisco Elastic Services Controller 4.2.0.86 Cisco Elastic Services Controller 4.3 Cisco Elastic Services Controller 4.3.0.121 Cisco Elastic Services Controller 4.3.0.128 Cisco Elastic Services Controller 4.3.0.134 Cisco Elastic Services Controller 4.3.0.135 Cisco Elastic Services Controller 4.4 Cisco Elastic Services Controller 4.4.0.80 Cisco Elastic Services Controller 4.4.0.82 Cisco Elastic Services Controller 4.4.0.86 Cisco Elastic Services Controller 4.5 Cisco Elastic Services Controller 5.0 Cisco Elastic Services Controller 5.1 Cisco Elastic Services Controller 5.2 Cisco Elastic Services Controller 5.3 Cisco Elastic Services Controller 5.3.0.94	40

Summary

Vulnerable Configurations

References