OS Command Injection in Cisco Firewall Threat Defense (FTD) and Cisco Adaptive Security Appliance (ASA) - CVE-2021-1488
Published: April 28, 2021
Vulnerability identifier: #VU52719
CSH Severity: Medium
CVSS v4: 8.6 [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]
CVE-ID: CVE-2021-1488
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Cisco Adaptive Security Appliance (ASA)
How to mitigate CVE-2021-1488
Install updates from vendor's website.
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.6.4, 6.7.0.2
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.13.1.21, 9.14.2.13, 9.15.1.10
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.13.1.21, 9.14.2.13, 9.15.1.10