Improper access control in Cisco Adaptive Security Appliance (ASA) and Cisco Firewall Threat Defense (FTD) - CVE-2020-3564
Published: October 21, 2020 / Updated: October 27, 2020
Vulnerability identifier: #VU47944
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3564
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to ineffective flow tracking of FTP traffic. A remote attacker can send specially crafted FTP traffic, bypass FTP inspection and successfully complete FTP connections.
Affected software
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
Cisco Firewall Threat Defense (FTD)
How to mitigate CVE-2020-3564
Install updates from vendor's website.
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.8.4.26, 9.9.2.80, 9.10.1.44, 9.12.4.2
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.3.0.6, 6.4.0.10, 6.5.0.5, 6.6.1
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.3.0.6, 6.4.0.10, 6.5.0.5, 6.6.1