Resource exhaustion in Cisco Adaptive Security Appliance (ASA) and Cisco Firewall Threat Defense (FTD) - CVE-2020-3306
Published: May 7, 2020
Vulnerability identifier: #VU27596
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3306
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources in the DHCP module. A remote attacker can send a specially crafted DHCP packet, trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
Cisco Adaptive Security Appliance (ASA)
Cisco Firewall Threat Defense (FTD)
Cisco Firewall Threat Defense (FTD)
How to mitigate CVE-2020-3306
Install updates from vendor's website.
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.6.4.34, 9.8.4.10, 9.10.1.30, 9.12.3
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.3.0.5, 6.4.0.4
Cisco Firewall Threat Defense (FTD) - addressed in versions 6.3.0.5, 6.4.0.4