What is CVE-2021-1312?

CVE-2021-1312 is a medium-severity vulnerability in Cisco Elastic Services Controller, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-01-20.

How severe is CVE-2021-1312?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Cisco Elastic Services Controller

CVE-2021-1312

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.025 (83.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Cisco Elastic Services Controller — versions n/a
Cisco Elastic_services_controller

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1312?: CVE-2021-1312 is a medium-severity vulnerability in Cisco Elastic Services Controller, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-01-20.
How severe is CVE-2021-1312?: Medium severity. CVSS v3 base score is 5.3 out of 10.