CVE-2020-3562: Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability
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. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-3562.
What is the severity of CVE-2020-3562?
The severity of CVE-2020-3562 is high with a CVSS score of 8.6.
Which software is affected by CVE-2020-3562?
Cisco Firepower Threat Defense (FTD) Software versions 6.3.0, 6.4.0, and 6.5.0 are affected by CVE-2020-3562.
How can an attacker exploit CVE-2020-3562?
An attacker can exploit CVE-2020-3562 by sending specially crafted SSL/TLS packets to the affected device's SSL/TLS inspection feature.
Is there a fix available for CVE-2020-3562?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.