Fortinet Fortigate - Proxy mode with deep inspection - Stack-based buffer overflow (FG-IR-23-183)

critical Nessus Plugin ID 178148


Fortinet Firewall is missing one or more security-related updates.


The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-23-183 advisory.

- A stack-based overflow vulnerability [CWE-124] in Fortinet FortiOS version 7.0.0 through 7.0.10 and 7.2.0 through 7.2.3 and FortiProxy version 7.0.0 through 7.0.9 and 7.2.0 through 7.2.2 allows a remote unauthenticated attacker to execute arbitrary code or command via crafted packets reaching proxy policies or firewall policies with proxy mode alongside deep or full packet inspection. (CVE-2023-33308)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.4 or above Please upgrade to FortiOS version 7.0.11 or above Please upgrade to FortiProxy version 7.2.3 or above Please upgrade to FortiProxy version 7.0.10 or above

See Also

Plugin Details

Severity: Critical

ID: 178148

File Name: fortigate_FG-IR-23-183.nasl

Version: 1.5

Type: local

Family: Firewalls

Published: 7/11/2023

Updated: 5/22/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-33308


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/model, Host/Fortigate/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 7/11/2023

Vulnerability Publication Date: 7/11/2023

Reference Information

CVE: CVE-2023-33308

IAVA: 2023-A-0353-S