A vulnerability in the processing of SSH connections for multi-instance deployments of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to a lack of proper 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, which causes a DoS condition on the affected device. The device must be manually reloaded to recover.
The product does not handle or incorrectly handles an exceptional condition.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firepower_management_center_virtual_appliance | Cisco | 6.3.0 (including) | 6.3.0 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.4.0 (including) | 6.4.0 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.4.0.13 (including) | 6.4.0.13 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.5.0 (including) | 6.5.0 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.6.0 (including) | 6.6.0 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.7.0.3 (including) | 6.7.0.3 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 6.7.1 (including) | 6.7.1 (including) |
| Firepower_management_center_virtual_appliance | Cisco | 7.0.0 (including) | 7.0.0 (including) |
| Firepower_threat_defense | Cisco | 6.3.0 (including) | 6.4.0.13 (excluding) |
| Firepower_threat_defense | Cisco | 6.5.0 (including) | 6.6.5 (excluding) |
| Firepower_threat_defense | Cisco | 6.7.0 (including) | 6.7.0.3 (excluding) |
| Firepower_threat_defense | Cisco | 7.0.0 (including) | 7.0.1 (excluding) |
| Sourcefire_defense_center | Cisco | 6.3.0 (including) | 6.3.0 (including) |
| Sourcefire_defense_center | Cisco | 6.4.0 (including) | 6.4.0 (including) |
| Sourcefire_defense_center | Cisco | 6.4.0.13 (including) | 6.4.0.13 (including) |
| Sourcefire_defense_center | Cisco | 6.5.0 (including) | 6.5.0 (including) |
| Sourcefire_defense_center | Cisco | 6.6.0 (including) | 6.6.0 (including) |
| Sourcefire_defense_center | Cisco | 6.7.0.3 (including) | 6.7.0.3 (including) |
| Sourcefire_defense_center | Cisco | 6.7.1 (including) | 6.7.1 (including) |
| Sourcefire_defense_center | Cisco | 7.0.0 (including) | 7.0.0 (including) |