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Cisco XE: CVE-2021-34697: Cisco IOS XE Software Protection Against Distributed Denial of Service Attacks Feature Vulnerability

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Cisco XE: CVE-2021-34697: Cisco IOS XE Software Protection Against Distributed Denial of Service Attacks Feature Vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
09/22/2021
Created
01/19/2022
Added
01/18/2022
Modified
05/21/2024

Description

A vulnerability in the Protection Against Distributed Denial of Service Attacks feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct denial of service (DoS) attacks to or through the affected device. This vulnerability is due to incorrect programming of the half-opened connections limit, TCP SYN flood limit, or TCP SYN cookie features when the features are configured in vulnerable releases of Cisco IOS XE Software. An attacker could exploit this vulnerability by attempting to flood traffic to or through the affected device. A successful exploit could allow the attacker to initiate a DoS attack to or through an affected device.

Solution(s)

  • cisco-xe-update-latest

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