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CVE-2022-20728

Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

Published: Sep 30, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-284
NVD MITRE
4.7CVSSMEDIUM
EPSS Score
0.2%
Top 84.9%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:CC:NI:LA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-284NVD-CWE-Other

Affected Products

Cisco Aironet Access Point Software (IOS XE Controller)CiscoNetworking Infrastructure
Cisco Aironet 1540Cisco Systems Inc.Networking Infrastructure
Cisco Aironet 1560Cisco Systems Inc.Networking Infrastructure
Cisco Aironet 1800Cisco Systems Inc.Networking Infrastructure
Cisco Aironet 2800Cisco Systems Inc.Networking Infrastructure
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco
and 36 more affected products View all →

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apvlan-TDTtb4FY
tools.cisco.com
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apvlan-TDTtb4FY
tools.cisco.com
https://www.cybersecurity-help.cz/vdb/SB2022092750
cybersecurity-help.cz

Timeline

Published
Sep 30, 2022
Last Updated
Nov 21, 2024

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