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.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: cisco

Published: 2021-10-27T00:00:00

Updated: 2021-10-27T18:55:52

Reserved: 2021-06-15T00:00:00


Link: CVE-2021-34781

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2021-10-27T19:15:08.233

Modified: 2023-11-07T03:36:23.920


Link: CVE-2021-34781

JSON object: View

cve-icon Redhat Information

No data.