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Description

A vulnerability in the fragmentation handling code of tunnel protocol packets in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of large fragmented tunnel protocol packets. One example of a tunnel protocol is Generic Routing Encapsulation (GRE). An attacker could exploit this vulnerability by sending crafted fragmented packets to an affected system. A successful exploit could allow the attacker to cause the affected system to reload, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.

PUBLISHED Reserved 2022-10-27 | Published 2023-03-23 | Updated 2024-10-28 | Assigner cisco




HIGH: 8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Problem types

CWE-20

Product status

Any version
affected

References

sec.cloudapps.cisco.com/...y/cisco-sa-ios-gre-crash-p6nE5Sq5 (20230322 Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability) vendor-advisory

cve.org (CVE-2023-20072)

nvd.nist.gov (CVE-2023-20072)

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