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Cisco XE: CVE-2018-0157: Cisco IOS XE Software Zone-Based Firewall IP Fragmentation Denial of Service Vulnerability

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Cisco XE: CVE-2018-0157: Cisco IOS XE Software Zone-Based Firewall IP Fragmentation Denial of Service Vulnerability

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
03/28/2018
Created
08/02/2019
Added
07/30/2019
Modified
11/13/2023

Description

A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending fragmented IP Version 4 or IP Version 6 packets through an affected device. An exploit could allow the attacker to cause the device to crash, resulting in a denial of service (DoS) condition. The following releases of Cisco IOS XE Software are vulnerable: Everest-16.4.1, Everest-16.4.2, Everest-16.5.1, Everest-16.5.1b, Everest-16.6.1, Everest-16.6.1a. Cisco Bug IDs: CSCvf60296.

Solution(s)

  • cisco-xe-upgrade-latest

References

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