CVE-2020-3562

Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability

Published Oct 21, 2020 CVSS 3.1 · 8.6 High EPSS 1.8% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-24833 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.
History
Type Values Removed Values Added
First Time appeared Cisco secure Firewall Threat Defense
CPEs cpe:2.3:a:cisco:firepower_threat_defense:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.5.0:*:*:*:*:*:*:*
Vendors & Products Cisco firepower Threat Defense
Cisco secure Firewall Threat Defense
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Nov 13, 2024, 5:46 PM
Reserved
Dec 12, 2019, 12:00 AM
Status
Modified
Published
Oct 21, 2020, 7:15 PM
Modified
Aug 11, 2026, 7:33 PM