CVE-2021-1402 : Vulnerability Insights and Analysis
Learn about CVE-2021-1402 affecting Cisco Firepower Threat Defense Software. Discover the impact, technical details, and mitigation strategies for this SSL decryption policy vulnerability.
A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition.
Understanding CVE-2021-1402
This CVE affects Cisco Firepower Threat Defense (FTD) Software and can lead to a denial of service condition through crafted SSL/TLS messages.
What is CVE-2021-1402?
The vulnerability in Cisco Firepower Threat Defense Software could be exploited by an unauthenticated attacker to cause a device reload, resulting in a DoS condition due to insufficient validation of SSL/TLS messages.
The Impact of CVE-2021-1402
The vulnerability poses a high risk, with a CVSS base score of 8.6, allowing attackers to remotely disrupt services without the need for user interaction.
Technical Details of CVE-2021-1402
The technical details of this vulnerability cover its description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The flaw lies in the insecure handling of SSL/TLS messages during software-based SSL decryption, enabling an attacker to crash a process and force a device reload.
Affected Systems and Versions
Cisco Firepower Threat Defense (FTD) Software is affected by this vulnerability, with specific versions impacted.
Exploitation Mechanism
Exploiting this vulnerability involves sending a malicious SSL/TLS message through the affected device to trigger a reload and cause a denial of service.
Mitigation and Prevention
Understanding how to mitigate and prevent CVE-2021-1402 is crucial to maintaining cybersecurity.
Immediate Steps to Take
Immediately update the affected systems to the latest version and implement other security measures to protect against potential exploits.
Long-Term Security Practices
Adopting robust security practices, such as network segmentation and regular security audits, can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for updates and patches from Cisco for Firepower Threat Defense Software to address security vulnerabilities and enhance system protection.