Overview
- 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.
- Source
- ykramarz@cisco.com
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 8.1
- Impact score
- 5.2
- Exploitability score
- 2.8
- Vector string
- CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 4.8
- Impact score
- 4.9
- Exploitability score
- 6.5
- Vector string
- AV:A/AC:L/Au:N/C:P/I:P/A:N
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- ykramarz@cisco.com
- CWE-284
Social media
- Hype score
- Not currently trending
Configurations
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