CVE-2022-20728: cisco aironet_1542d_firmware Improper Access Control

Vulnerability summary

CVE-2022-20728 is a medium (CVSS 4.7) Improper Access Control vulnerability in cisco aironet_1542d_firmware. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.6% of scored vulnerabilities.

Timeline

1. 30-09-2022
   PublishedVulnerability first disclosed.
2. 06-11-2024
   Last modifiedVulnerability information updated.

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.

• CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.