Cisco Access Points VLAN Bypass from Native VLAN Vulnerability (Cisco Cisco Aironet Access Point Software (IOS XE Controller))

CVE-2022-20728
MEDIUM 4.7

At a glance

Source
NVD
EPSS
EPSS 0.27 % Β· percentile 19 ()
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Modified

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.

Weaknesses (CWE)

  • CWE-284 β€” Improper Access Control

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Ncisco
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NNVD Β· psirt@cisco.com (Secondary)
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NNVD Β· nvd@nist.gov (Primary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Cisco Β· Cisco Aironet Access Point Software (IOS XE Controller)affected n/a

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST β€” attribution requested
ENISA EUVDENISA β€” reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain β€” this product uses data from the NVD API but is not endorsed or certified by the NVD