Tracker / CVE-2021-34781
CVE-2021-34781
High 8.6
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.
Affected products and versions
| cisco | firepower_management_center_virtual_appliance |
|---|---|
| cisco | secure_firewall_threat_defense · 6.3.0 → 6.4.0.13 |
| cisco | secure_firewall_threat_defense · 6.5.0 → 6.6.5 |
| cisco | secure_firewall_threat_defense · 6.7.0 → 6.7.0.3 |
| cisco | secure_firewall_threat_defense · 7.0.0 → 7.0.1 |
| cisco | sourcefire_defense_center |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.