Multiple vulnerabilities in the Zone-Based Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload or stop forwarding traffic through the firewall. The vulnerabilities are due to incomplete handling of Layer 4 packets through the device. An attacker could exploit these vulnerabilities by sending a certain sequence of traffic patterns through the device. A successful exploit could allow the attacker to cause the device to reload or stop forwarding traffic through the firewall, resulting in a denial of service. For more information about these vulnerabilities, see the Details section of this advisory.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2020-09-24T18:01:32.351112Z

Updated: 2024-09-16T18:55:40.734Z

Reserved: 2019-12-12T00:00:00

Link: CVE-2020-3421

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-09-24T18:15:18.917

Modified: 2023-11-07T03:22:41.670

Link: CVE-2020-3421

cve-icon Redhat

No data.