A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: cisco

Published: 2021-09-22T00:00:00

Updated: 2021-09-23T02:31:07

Reserved: 2020-11-13T00:00:00


Link: CVE-2021-1621

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2021-09-23T03:15:13.210

Modified: 2023-11-07T03:28:48.647


Link: CVE-2021-1621

JSON object: View

cve-icon Redhat Information

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