Insufficient logging in FortiOS - CVE-2020-12818
Published: September 24, 2020
Vulnerability identifier: #VU47004
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-12818
CWE-ID: CWE-778
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiOS
FortiOS
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to software may not log traffic from an unauthenticated attacker to Fortinet owned IP addresses. A remote attacker can abuse such behavior to stay unnoticed while performing malicious actions.
How to mitigate CVE-2020-12818
Upgrade to 6.4.1 or above, and add dynamic firewall address "FCTEMS_ALL_FORTICLOUD_SERVERS" which includes all FortiGuard servers in the policy to log the traffic for Fortinet IP addresses.