Vulnerability identifier: #VU86911

Vulnerability risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-20291

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Nexus 3000 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Nexus 9000 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco NX-OS
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to incorrect hardware programming that occurs when configuration changes are made to port channel member ports. A remote attacker can send traffic that should be blocked through the affected device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Nexus 3000 Series Switches: All versions

Cisco Nexus 9000 Series Switches: All versions

Cisco NX-OS: 9.3(10) - 9.3(12)

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External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-po-acl-TkyePgvL

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.