CVE-2020-3567 : Vulnerability Insights and Analysis
Learn about CVE-2020-3567, a vulnerability in Cisco Industrial Network Director that allows a DoS attack by increasing CPU utilization. Find mitigation steps and long-term security practices here.
A vulnerability in the management REST API of Cisco Industrial Network Director (IND) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition by increasing CPU utilization to 100 percent.
Understanding CVE-2020-3567
This CVE involves a denial of service vulnerability in Cisco Industrial Network Director (IND) due to insufficient validation of requests sent to the REST API.
What is CVE-2020-3567?
The vulnerability allows an attacker to send a crafted request to the REST API, resulting in high CPU utilization and a potential permanent DoS condition on the affected device.
The Impact of CVE-2020-3567
- CVSS Base Score: 6.5 (Medium Severity)
- Attack Vector: Network
- Availability Impact: High
- The vulnerability could lead to a complete denial of service on the affected device.
Technical Details of CVE-2020-3567
The following technical details provide insight into the vulnerability and its implications.
Vulnerability Description
- The vulnerability lies in the management REST API of Cisco Industrial Network Director (IND).
- Insufficient validation of requests allows an attacker to exploit the API.
Affected Systems and Versions
- Affected Product: Cisco Industrial Network Director
- Vendor: Cisco
- Affected Version: Not applicable (n/a)
Exploitation Mechanism
- An authenticated attacker can exploit the vulnerability by sending a crafted request to the REST API.
- This action results in a 100 percent increase in CPU utilization, leading to a DoS condition.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2020-3567.
Immediate Steps to Take
- Apply vendor patches or updates as soon as they are available.
- Monitor CPU utilization on affected devices for any unusual spikes.
- Restrict network access to the management interface of Cisco IND.
Long-Term Security Practices
- Regularly update and patch all software and firmware on network devices.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Cisco may release patches or updates to address the vulnerability.
- Stay informed about security advisories and apply relevant patches promptly.