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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2021-10-27T18:55:52.320484Z
Updated: 2024-09-16T17:59:16.971Z
Reserved: 2021-06-15T00:00:00
Link: CVE-2021-34781
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-10-27T19:15:08.233
Modified: 2023-11-07T03:36:23.920
Link: CVE-2021-34781
Redhat
No data.