Resource exhaustion in Cisco Firepower Management Center
CVE-2022-20854
A vulnerability in the processing of SSH connections of Cisco Firepower Management Center (FMC) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling when an SSH session fails to be established. An attacker could exploit this vulnerability by sending a high rate of crafted SSH connections to the instance. A successful exploit could allow the attacker to cause resource exhaustion, resulting in a reboot on the affected device.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.009 (55.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Firepower Management Center — versions N/A
- Cisco Firepower Threat Defense Software — versions N/A
- Cisco Firepower_threat_defense — versions 6.2.1, 6.6.0, 6.6.0.1
- Cisco Secure_firewall_management_center — versions 6.2.1, 6.6.0, 6.6.0.1
- Cisco Secure_firewall_threat_defense — versions 6.2.1, 6.6.0, 6.6.0.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-20854?
- CVE-2022-20854 is a high-severity vulnerability in Cisco Firepower Management Center, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-11-15.
- How severe is CVE-2022-20854?
- High severity. CVSS v3 base score is 7.5 out of 10.