CVE-2018-0412

Published Aug 15, 2018

Last updated 5 years ago

CVSS medium 5.3

Overview

Description: A vulnerability in the implementation of Extensible Authentication Protocol over LAN (EAPOL) functionality in Cisco Small Business 100 Series Wireless Access Points and Cisco Small Business 300 Series Wireless Access Points could allow an unauthenticated, adjacent attacker to force the downgrade of the encryption algorithm that is used between an authenticator (access point) and a supplicant (Wi-Fi client). The vulnerability is due to the improper processing of certain EAPOL messages that are received during the Wi-Fi handshake process. An attacker could exploit this vulnerability by establishing a man-in-the-middle position between a supplicant and an authenticator and manipulating an EAPOL message exchange to force usage of a WPA-TKIP cipher instead of the more secure AES-CCMP cipher. A successful exploit could allow the attacker to conduct subsequent cryptographic attacks, which could lead to the disclosure of confidential information. Cisco Bug IDs: CSCvj29229.
Source: ykramarz@cisco.com
NVD status: Modified

Risk scores

CVSS 3.0

Type: Primary
Base score: 5.3
Impact score: 3.6
Exploitability score: 1.6
Vector string: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: MEDIUM

CVSS 2.0

Type: Primary
Base score: 2.9
Impact score: 2.9
Exploitability score: 5.5
Vector string: AV:A/AC:M/Au:N/C:N/I:P/A:N

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo
ykramarz@cisco.com: CWE-310

Hype score: Not currently trending

Configurations

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Overview

Risk scores

CVSS 3.0

CVSS 2.0

Weaknesses

Social media

Configurations

References