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.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
---|---|
Cisco |
|
Configuration 1 [-]
AND |
|
No data.
References
History
No history.
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
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-03-23T17:15:13.857
Modified: 2023-11-07T04:05:47.613
Link: CVE-2023-20027
Redhat
No data.