Vulnerability Details : 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 category: Denial of service
Products affected by CVE-2022-20854
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.1.0 and up to, including, (<=) 6.1.0.7cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.3.0 and up to, including, (<=) 6.3.0.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.4.0 and up to, including, (<=) 6.4.0.15cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.7.0 and up to, including, (<=) 6.7.0.3cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.2.0 and up to, including, (<=) 6.2.0.6cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.5.0 and up to, including, (<=) 6.5.0.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.2.2 and up to, including, (<=) 6.2.2.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.2.3 and up to, including, (<=) 6.2.3.18cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:7.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.2:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.7.0 and up to, including, (<=) 6.7.0.3cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.2.0 and up to, including, (<=) 6.2.0.6cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.2.2 and up to, including, (<=) 6.2.2.5cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.3.0 and up to, including, (<=) 6.3.0.5cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.4.0 and up to, including, (<=) 6.4.0.15cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.2.3 and up to, including, (<=) 6.2.3.18cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.5.0 and up to, including, (<=) 6.5.0.5cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- Cisco » Secure Firewall Management CenterVersions from including (>=) 6.1.0 and up to, including, (<=) 6.1.0.7cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.6.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:7.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:secure_firewall_management_center:6.2.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-20854
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-20854
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Cisco Systems, Inc. |
CWE ids for CVE-2022-20854
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-20854
-
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dos-OwEunWJN
Cisco Firepower Management Center and Firepower Threat Defense Software SSH Denial of Service Vulnerability
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dos-OwEunWJN
Cisco Firepower Management Center and Firepower Threat Defense Software SSH Denial of Service VulnerabilityVendor Advisory
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