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Cisco XE: CVE-2018-15372: Cisco IOS XE Software MACsec MKA Using EAP-TLS Authentication Bypass Vulnerability

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Cisco XE: CVE-2018-15372: Cisco IOS XE Software MACsec MKA Using EAP-TLS Authentication Bypass Vulnerability

Severity
5
CVSS
(AV:A/AC:L/Au:N/C:P/I:P/A:N)
Published
10/05/2018
Created
08/02/2019
Added
07/30/2019
Modified
11/02/2023

Description

A vulnerability in the MACsec Key Agreement (MKA) using Extensible Authentication Protocol-Transport Layer Security (EAP-TLS) functionality of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to bypass authentication and pass traffic through a Layer 3 interface of an affected device. The vulnerability is due to a logic error in the affected software. An attacker could exploit this vulnerability by connecting to and passing traffic through a Layer 3 interface of an affected device, if the interface is configured for MACsec MKA using EAP-TLS and is running in access-session closed mode. A successful exploit could allow the attacker to bypass 802.1x network access controls and gain access to the network.

Solution(s)

  • cisco-xe-upgrade-latest

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