Privilege escalation in Cisco FirePOWER Software for ASA FirePOWER Module

1) OS Command Injection

EUVDB-ID: #VU64597

Risk: Low

CVSSv3.1: 2.8 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2022-20828

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

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper input validation in the CLI parser of Cisco FirePOWER Software for Adaptive Security Appliance (ASA) FirePOWER module. A local user can pass specially crafted parameters to the affected CLI command and execute arbitrary commands on the system with root privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Firepower NGFW: before 6.4.0.15

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asasfr-cmd-inject-PE4GfdG
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb32418

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. However, a fully functional exploit for this vulnerability is available.