A vulnerability in the implementation of the IPv4 Virtual Fragmentation Reassembly (VFR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper reassembly of large packets that occurs when VFR is enabled on either a tunnel interface or on a physical interface that is configured with a maximum transmission unit (MTU) greater than 4,615 bytes. An attacker could exploit this vulnerability by sending fragmented packets through a VFR-enabled interface on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2023-03-23T00:00:00

Updated: 2024-08-02T08:57:35.874Z

Reserved: 2022-10-27T00:00:00

Link: CVE-2023-20027

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-03-23T17:15:13.857

Modified: 2023-11-07T04:05:47.613

Link: CVE-2023-20027

cve-icon Redhat

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