Improper access control in Cisco Nexus 9000 Series Fabric Switches ACI Mode



Published: 2021-08-26
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-1583
CWE-ID CWE-284
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Cisco Nexus 9000 Series Switches in ACI Mode
Hardware solutions / Routers & switches, VoIP, GSM, etc

Cisco NX-OS
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU56101

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1583

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the fabric infrastructure file system. A local administrator can bypass implemented security restrictions and read arbitrary files on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Nexus 9000 Series Switches in ACI Mode: 14.2.7f

Cisco NX-OS: All versions

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-naci-afr-UtjfO2D7


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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