Command injection in Cisco NX-OS CLI

1) OS Command Injection

EUVDB-ID: #VU96599

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-20289

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 of arguments for a specific CLI command. A local user can pass specially crafted arguments to the affected CLI command and execute arbitrary OS commands on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco NX-OS: before 9.3(13)

Cisco UCS: before 4.2(3k)

CPE2.3

• cpe:2.3:o:cisco_systems:cisco_nx-os:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_ucs:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cmdinj-Lq6jsZhH
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwi48264
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwi48276
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwh77786

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.