Resource exhaustion in Cisco Firewall Threat Defense (FTD) - CVE-2020-3189
Published: May 7, 2020
Vulnerability identifier: #VU27588
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-3189
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Firewall Threat Defense (FTD)
Cisco Firewall Threat Defense (FTD)
Detailed vulnerability description
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 VPN System Logging functionality. A remote attacker can create or delete a VPN tunnel connection, which could leak a small amount of system memory for each logging event, trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2020-3189
Vendor recommends to update the Cisco FTD Software Release to version 6.2.3.16 (June 2020), 6.3.0.6 (future release), 6.4.0.9 (May 2020), 6.5.0.5 (future release).