FKIE_CVE-2021-1591

Vulnerability from fkie_nvd - Published: 2021-08-25 20:15 - Updated: 2024-11-21 05:44
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
A vulnerability in the EtherChannel port subscription logic of Cisco Nexus 9500 Series Switches could allow an unauthenticated, remote attacker to bypass access control list (ACL) rules that are configured on an affected device. This vulnerability is due to oversubscription of resources that occurs when applying ACLs to port channel interfaces. An attacker could exploit this vulnerability by attempting to access network resources that are protected by the ACL. A successful exploit could allow the attacker to access network resources that would be protected by the ACL that was applied on the port channel interface.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nexus-acl-vrvQYPVePatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nexus-acl-vrvQYPVePatch, Vendor Advisory
Impacted products
Vendor Product Version
cisco nx-os 9.3\(4\)
cisco nexus_9500_16-slot -
cisco nexus_9500_4-slot -
cisco nexus_9500_8-slot -
cisco nexus_9504 -
cisco nexus_9508 -
cisco nexus_9516 -
To clipboard 

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      "value": "A vulnerability in the EtherChannel port subscription logic of Cisco Nexus 9500 Series Switches could allow an unauthenticated, remote attacker to bypass access control list (ACL) rules that are configured on an affected device. This vulnerability is due to oversubscription of resources that occurs when applying ACLs to port channel interfaces. An attacker could exploit this vulnerability by attempting to access network resources that are protected by the ACL. A successful exploit could allow the attacker to access network resources that would be protected by the ACL that was applied on the port channel interface."
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      "value": "Una vulnerabilidad en la l\u00f3gica de suscripci\u00f3n de puertos EtherChannel de Cisco Nexus 9500 Series Switches podr\u00eda permitir a un atacante remoto no autenticado omitir las reglas de la lista de control de acceso (ACL) configuradas en un dispositivo afectado. Esta vulnerabilidad es debido a la sobresuscripci\u00f3n de recursos que ocurre cuando se aplican las ACL a las interfaces del canal de puertos. Un atacante podr\u00eda explotar esta vulnerabilidad al intentar acceder a los recursos de red que est\u00e1n protegidos por la ACL. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante acceder a los recursos de red que estar\u00edan protegidos por la ACL que se aplic\u00f3 en la interfaz del canal de puertos."
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  "id": "CVE-2021-1591",
  "lastModified": "2024-11-21T05:44:41.757",
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