CVE-2022-20854CWE-400CWE-755denial-of-service

CVE-2022-20854

High · published November 16, 2022

CVSS v3.1
7.5
EPSS
1%
Percentile
60.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00949 · 60.9th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-755 · Improper Handling of Exceptional Conditions
Published
2022-11-16T02:15Z
Affected products (50)
ProductVersionsFixed in
cisco/secure_firewall_management_center≥ 6.1.0, ≤ 6.1.0.7—
cisco/secure_firewall_management_center≥ 6.2.0, ≤ 6.2.0.6—
cisco/secure_firewall_management_center≥ 6.2.2, ≤ 6.2.2.5—
cisco/secure_firewall_management_center≥ 6.2.3, ≤ 6.2.3.18—
cisco/secure_firewall_management_center≥ 6.3.0, ≤ 6.3.0.5—
cisco/secure_firewall_management_center≥ 6.4.0, ≤ 6.4.0.15—
cisco/secure_firewall_management_center≥ 6.5.0, ≤ 6.5.0.5—
cisco/secure_firewall_management_center≥ 6.7.0, ≤ 6.7.0.3—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_management_centerall versions—
cisco/secure_firewall_threat_defense≥ 6.1.0, ≤ 6.1.0.7—
cisco/secure_firewall_threat_defense≥ 6.2.0, ≤ 6.2.0.6—
cisco/secure_firewall_threat_defense≥ 6.2.2, ≤ 6.2.2.5—
cisco/secure_firewall_threat_defense≥ 6.2.3, ≤ 6.2.3.18—
cisco/secure_firewall_threat_defense≥ 6.3.0, ≤ 6.3.0.5—
cisco/secure_firewall_threat_defense≥ 6.4.0, ≤ 6.4.0.15—
cisco/secure_firewall_threat_defense≥ 6.5.0, ≤ 6.5.0.5—
cisco/secure_firewall_threat_defense≥ 6.7.0, ≤ 6.7.0.3—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
References (2)
EPSS history
Timeline
  • 10 NOV 17:31Z
    A vulnerability in the processing of SSH connections of Cisco Firepower Management Center (FMC) and Cisco Firepower Threat Defense (FTD) Software could allow…
    cvelistv5