CVEvulnerability

CVE-2018-15372

8.1 HIGH Published 2018-10-05 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-10-05
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
8.1 HIGH — CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
4.8 MEDIUM — AV:A/AC:L/Au:N/C:P/I:P/A:N
Weaknesses
CWE-284

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.

Affected configurations

• cisco ios xe 16.8.1 • cisco ios xe 16.9.1

Related

Weakness · CWE (1)

  • CWE-284 Improper Access Control weakness

References