| Package | Affected versions | Patched versions |
|---|---|---|
| firepower management center virtual appliance | = 6.3.0= 6.4.0= 6.4.0.13= 6.5.0= 6.6.0= 6.7.0.3= 6.7.1= 7.0.0 | |
| secure firewall threat defense | ≥ 6.3.0, < 6.4.0.13≥ 6.5.0, < 6.6.5≥ 6.7.0, < 6.7.0.3≥ 7.0.0, < 7.0.1 | 6.4.0.136.6.56.7.0.37.0.1 |
| sourcefire defense center | = 6.3.0= 6.4.0= 6.4.0.13= 6.5.0= 6.6.0= 6.7.0.3= 6.7.1= 7.0.0 |
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.
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