High severity · published Nov 15, 2022
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,…
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SF
Secure Firewall Management Center · Cisco
6.1.0 through 6.1.0.7; 6.2.0 through 6.2.0.6; 6.2.2 through 6.2.2.5; 6.2.3 through 6.2.3.18; 6.3.0 through 6.3.0.5; 6.4.0 through 6.4.0.15; +19 more · source: NVD
SF
Secure Firewall Threat Defense · Cisco
6.1.0 through 6.1.0.7; 6.2.0 through 6.2.0.6; 6.2.2 through 6.2.2.5; 6.2.3 through 6.2.3.18; 6.3.0 through 6.3.0.5; 6.4.0 through 6.4.0.15; +19 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-20854
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-20854
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dos-OwEunWJN
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