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
| Link | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nexus-acl-vrvQYPVe | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
08 Jul 2022, 18:25
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | NVD-CWE-Other |
03 Sep 2021, 13:43
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 5.0
v3 : 5.3 |
| CPE | cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9500_4-slot:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:nx-os:9.3\(4\):*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9500_16-slot:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9500_8-slot:-:*:*:*:*:*:*:* |
|
| CWE | CWE-287 | |
| References | (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nexus-acl-vrvQYPVe - Patch, Vendor Advisory |
25 Aug 2021, 20:27
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-08-25 20:15
Updated : 2023-12-10 13:55
NVD link : CVE-2021-1591
Mitre link : CVE-2021-1591
CVE.ORG link : CVE-2021-1591
JSON object : View
Products Affected
cisco
- nexus_9500_4-slot
- nx-os
- nexus_9516
- nexus_9504
- nexus_9508
- nexus_9500_16-slot
- nexus_9500_8-slot
CWE