Description
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.
Published: 2023-03-23
Score: 8.6 High
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2023-24206 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

Mon, 28 Oct 2024 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco 1000 Integrated Services Router 1100-4g\/6g Integrated Services Router 1100-4g Integrated Services Router 1100-4p Integrated Services Router 1100-6g Integrated Services Router 1100-8p Integrated Services Router 1100 Integrated Services Router 1101-4p Integrated Services Router 1101 Integrated Services Router 1109-2p Integrated Services Router 1109-4p Integrated Services Router 1109 Integrated Services Router 1111x-8p Integrated Services Router 1111x Integrated Services Router 111x Integrated Services Router 1120 Integrated Services Router 1131 Integrated Services Router 1160 Integrated Services Router 4221 Integrated Services Router 4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router 4431 Integrated Services Router 4451-x Integrated Services Router 4461 Integrated Services Router C8200-1n-4t C8200l-1n-4t C8500l-8s4x Catalyst 8000v Edge Catalyst 8300-1n1s-4t2x Catalyst 8300-1n1s-6t Catalyst 8300-2n2s-4t2x Catalyst 8300-2n2s-6t Cloud Services Router 1000v Ios Xe
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-10-28T16:33:06.726Z

Reserved: 2022-10-27T00:00:00.000Z

Link: CVE-2023-20027

cve-icon Vulnrichment

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

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T07:40:23.213

Link: CVE-2023-20027

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses