Remote code execution in FortiOS fgfmd

1) Format string error

EUVDB-ID: #VU86279

Risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2024-23113

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a format string error within the fgfmd communication daemon. A remote non-authenticated attacker can send specially crafted requests to the device and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 7.0.0 - 7.4.2

CPE2.3

• cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*

External links

https://www.fortiguard.com/psirt/FG-IR-24-029

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?

Yes. This vulnerability is being exploited in the wild.