CVE-2022-20728

Published Sep 30, 2022

Last updated a year ago

Overview

Description
A vulnerability in the client forwarding code of multiple Cisco Access Points (APs) could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards packets that are destined to a wireless client if they are received on the native VLAN. An attacker could exploit this vulnerability by obtaining access to the native VLAN and directing traffic directly to the client through their MAC/IP combination. A successful exploit could allow the attacker to bypass VLAN separation and potentially also bypass any Layer 3 protection mechanisms that are deployed.
Source
ykramarz@cisco.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
4.7
Impact score
1.4
Exploitability score
2.8
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Severity
MEDIUM

Weaknesses

nvd@nist.gov
NVD-CWE-Other
ykramarz@cisco.com
CWE-284

Social media

Hype score
Not currently trending

Configurations