CVE-2020-3562 HIGH

CVE-2020-3562: Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability

Vendor Cisco
Product Cisco Firepower Threat Defense Software
Weakness CWE-119
Published October 21, 2020
Last update November 13, 2024

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 21, 2020 CVE published
November 13, 2024 Record updated