CVE-2021-1312 : Vulnerability Insights and Analysis
Learn about CVE-2021-1312, a vulnerability in Cisco Elastic Services Controller allowing remote attackers to cause a denial of service. Find out the impact, affected systems, and mitigation steps.
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.
Understanding CVE-2021-1312
This CVE involves a vulnerability in Cisco Elastic Services Controller that could lead to a denial of service attack on the health monitor API.
What is CVE-2021-1312?
The vulnerability in Cisco Elastic Services Controller allows an unauthenticated, remote attacker to disrupt the health monitor API by flooding crafted TCP packets.
The Impact of CVE-2021-1312
The vulnerability could result in a denial of service attack on affected devices, potentially blocking TCP listening ports used by the health monitor API.
Technical Details of CVE-2021-1312
The following technical details outline the specifics of the vulnerability.
Vulnerability Description
Inadequate provisioning of kernel parameters for the maximum number of TCP connections and SYN backlog leads to this vulnerability in Cisco Elastic Services Controller.
Affected Systems and Versions
The vulnerability affects Cisco Elastic Services Controller with all versions.
Exploitation Mechanism
An attacker can exploit this vulnerability by sending a flood of crafted TCP packets to the health monitor API on affected devices.
Mitigation and Prevention
To address CVE-2021-1312, it is crucial to take immediate steps and implement long-term security practices.
Immediate Steps to Take
Update the affected Cisco Elastic Services Controller to the latest version and restrict network access to the health monitor API to trusted sources.
Long-Term Security Practices
Regularly monitor and patch systems, conduct security training for employees, and utilize intrusion detection systems to enhance overall security.
Patching and Updates
Stay updated with security advisories from Cisco, apply patches promptly, and follow best practices for securing network devices.