OS command injection in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firepower 1000 and 2100 Series Appliances

1) OS Command Injection

EUVDB-ID: #VU52719

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-1488

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 remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the upgrade process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software. A remote user can pass specially crafted data to the application and execute arbitrary OS commands on the target system with root privileges.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): before 9.13.1.21, 9.14.2.13, 9.15.1.10

Cisco Firepower Threat Defense (FTD): before 6.6.4, 6.7.0.2

CPE2.3

• cpe:2.3:h:cisco_systems:asa:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-cmdinj-TKyQfDcU
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvw93139

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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