CVE-2022-20728 (GCVE-0-2022-20728)

Vulnerability from cvelistv5 – Published: 2022-09-30 18:45 – Updated: 2024-11-06 16:06
VLAI?
Summary
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.
Severity ?
4.7 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
Assigner
References
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Vendor Product Version
Cisco Cisco Aironet Access Point Software (IOS XE Controller) Affected: n/a
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"Una vulnerabilidad en el c\\u00f3digo de reenv\\u00edo de clientes de varios Puntos de Acceso (AP) de Cisco podr\\u00eda permitir a un atacante adyacente no autenticado inyectar paquetes de la VLAN nativa a clientes dentro de VLANs no nativas en un dispositivo afectado. Esta vulnerabilidad es debido a un error l\\u00f3gico en el AP que reenv\\u00eda los paquetes destinados a un cliente inal\\u00e1mbrico si son recibidos en la VLAN nativa. Un atacante podr\\u00eda explotar esta vulnerabilidad al obtener acceso a la VLAN nativa y dirigiendo el tr\\u00e1fico directamente al cliente mediante su combinaci\\u00f3n MAC/IP. Una explotaci\\u00f3n con \\u00e9xito podr\\u00eda permitir al atacante omitir la separaci\\u00f3n de VLAN y potencialmente tambi\\u00e9n omitir cualquier mecanismo de protecci\\u00f3n de capa 3 que est\\u00e9 desplegado\"}]",
      "id": "CVE-2022-20728",
      "lastModified": "2024-11-21T06:43:25.730",
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      "published": "2022-09-30T19:15:10.903",
      "references": "[{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apvlan-TDTtb4FY\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apvlan-TDTtb4FY\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.