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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ciscoCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 29%
VendorProductVersion
ciscosecure_firewall_management_center
6.1.0 ≤
𝑥
≤ 6.1.0.7
ciscosecure_firewall_management_center
6.2.0 ≤
𝑥
≤ 6.2.0.6
ciscosecure_firewall_management_center
6.2.2 ≤
𝑥
≤ 6.2.2.5
ciscosecure_firewall_management_center
6.2.3 ≤
𝑥
≤ 6.2.3.18
ciscosecure_firewall_management_center
6.3.0 ≤
𝑥
≤ 6.3.0.5
ciscosecure_firewall_management_center
6.4.0 ≤
𝑥
≤ 6.4.0.15
ciscosecure_firewall_management_center
6.5.0 ≤
𝑥
≤ 6.5.0.5
ciscosecure_firewall_management_center
6.7.0 ≤
𝑥
≤ 6.7.0.3
ciscosecure_firewall_management_center
6.2.1
ciscosecure_firewall_management_center
6.6.0
ciscosecure_firewall_management_center
6.6.0.1
ciscosecure_firewall_management_center
6.6.1
ciscosecure_firewall_management_center
6.6.3
ciscosecure_firewall_management_center
6.6.4
ciscosecure_firewall_management_center
6.6.5
ciscosecure_firewall_management_center
6.6.5.1
ciscosecure_firewall_management_center
6.6.5.2
ciscosecure_firewall_management_center
7.0.0
ciscosecure_firewall_management_center
7.0.0.1
ciscosecure_firewall_management_center
7.0.1
ciscosecure_firewall_management_center
7.0.1.1
ciscosecure_firewall_management_center
7.0.2
ciscosecure_firewall_management_center
7.0.2.1
ciscosecure_firewall_management_center
7.0.3
ciscosecure_firewall_management_center
7.0.4
ciscofirepower_threat_defense
6.1.0 ≤
𝑥
≤ 6.1.0.7
ciscofirepower_threat_defense
6.2.0 ≤
𝑥
≤ 6.2.0.6
ciscofirepower_threat_defense
6.2.2 ≤
𝑥
≤ 6.2.2.5
ciscofirepower_threat_defense
6.2.3 ≤
𝑥
≤ 6.2.3.18
ciscofirepower_threat_defense
6.3.0 ≤
𝑥
≤ 6.3.0.5
ciscofirepower_threat_defense
6.4.0 ≤
𝑥
≤ 6.4.0.15
ciscofirepower_threat_defense
6.5.0 ≤
𝑥
≤ 6.5.0.5
ciscofirepower_threat_defense
6.7.0 ≤
𝑥
≤ 6.7.0.3
ciscofirepower_threat_defense
6.2.1
ciscofirepower_threat_defense
6.6.0
ciscofirepower_threat_defense
6.6.0.1
ciscofirepower_threat_defense
6.6.1
ciscofirepower_threat_defense
6.6.3
ciscofirepower_threat_defense
6.6.4
ciscofirepower_threat_defense
6.6.5
ciscofirepower_threat_defense
6.6.5.1
ciscofirepower_threat_defense
6.6.5.2
ciscofirepower_threat_defense
7.0.0
ciscofirepower_threat_defense
7.0.0.1
ciscofirepower_threat_defense
7.0.1
ciscofirepower_threat_defense
7.0.1.1
ciscofirepower_threat_defense
7.0.2
ciscofirepower_threat_defense
7.0.2.1
ciscofirepower_threat_defense
7.0.3
ciscofirepower_threat_defense
7.0.4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dos-OwEunWJN
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dos-OwEunWJN