OS Command Injection in Cisco FXOS Software

1) OS Command Injection

EUVDB-ID: #VU25657

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3169

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 insufficient validation of arguments passed to a specific CLI command. A local administrator can include a malicious input as the argument of an affected command and execute arbitrary OS commands on the target system.

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

This vulnerability affects Cisco FXOS Software running on the following Cisco devices:

• Firepower 4100 Series
• Firepower 9300 Security Appliances

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco FXOS: 2.2 - 2.4

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-fpwr-cmdinj

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.