Insufficient logging in Fortinet FortiGate

1) Insufficient logging

EUVDB-ID: #VU47004

Risk: Medium

CVSSv4.0: 2.7 [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 - Insufficient Logging

Exploit availability: No

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.

Mitigation

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.

Vulnerable software versions

FortiOS: 6.2.0 - 6.4.0

CPE2.3

• cpe:2.3:o:fortinet:fortios:6.2.0:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.2.1:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.2.3:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.2.4:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*

External links

https://fortiguard.com/psirt/FG-IR-20-033

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.