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

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cve-icon 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

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

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

Link: CVE-2021-34781

cve-icon Redhat

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