CVE-2020-3562 : Vulnerability Insights and Analysis
Learn about CVE-2020-3562, a high-severity vulnerability in Cisco Firepower 2100 Series SSL/TLS inspection, allowing remote attackers to trigger a denial of service condition. Find mitigation steps and preventive measures here.
A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
Understanding CVE-2020-3562
This CVE involves a denial of service vulnerability in Cisco Firepower 2100 Series SSL/TLS inspection.
What is CVE-2020-3562?
The vulnerability arises from improper input validation for specific SSL/TLS messages, enabling an attacker to trigger a DoS condition by sending a malformed message through the device.
The Impact of CVE-2020-3562
- CVSS Base Score: 8.6 (High Severity)
- Attack Vector: Network
- Attack Complexity: Low
- Availability Impact: High
- The vulnerability does not require user interaction or privileges, making it easier for attackers to exploit.
Technical Details of CVE-2020-3562
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows remote attackers to cause a DoS condition by exploiting the SSL/TLS inspection process.
Affected Systems and Versions
- Affected Product: Cisco Firepower Threat Defense Software
- Affected Version: Not Applicable
Exploitation Mechanism
Attackers can exploit the vulnerability by sending a malformed SSL/TLS message through the affected device, causing it to reload and resulting in a DoS condition.
Mitigation and Prevention
Protecting systems from CVE-2020-3562 is crucial to prevent potential attacks.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and administrators about cybersecurity best practices.
Patching and Updates
- Cisco has likely released patches to address this vulnerability. Ensure timely installation of these updates to secure the affected systems.