OS Command Injection in Cisco NX-OS Software

1) OS Command Injection

EUVDB-ID: #VU72512

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20050

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the CLI. A local user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco NX-OS: 8.2(9) - 10.2(4)

Cisco MDS 9000 Series Multilayer Switches: 9.3(1.64)

Nexus 1000 Virtual Edge for VMware vSphere: 5.2(1)SV4(5.0.352)

Nexus 1000V Switch for Microsoft Hyper-V: 5.2(1)SV4(5.0.352)

Nexus 1000V Switch for VMware vSphere: 5.2(1)SV4(5.0.352)

Cisco Nexus 3000 Series Switches: before 10.3(2)

Nexus 5500 Platform Switches: before 7.3(13)N1(1)

Nexus 5600 Platform Switches: before 7.3(13)N1(1)

Nexus 6000 Series Switches: before 7.3(13)N1(1)

Nexus 7000 Series Switches: before 8.4(7)

Cisco Nexus 9000 Series Switches NX-OS Mode: before 10.3(2)

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cli-cmdinject-euQVK9u

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.

Is there known malware, which exploits this vulnerability?

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