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Cisco XE: CVE-2023-20072: Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability

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Cisco XE: CVE-2023-20072: Cisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service Vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/23/2023
Created
03/24/2023
Added
03/23/2023
Modified
11/13/2023

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.

Solution(s)

  • cisco-xe-upgrade-latest

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