What is CVE-2023-33306?

CVE-2023-33306 is a null pointer dereference vulnerability in Fortinet FortiOS, FortiProxy, and SSL VPN service.

How does CVE-2023-33306 affect Fortinet products?

CVE-2023-33306 affects Fortinet FortiOS versions before 7.2.5, before 7.0.11, and before 6.4.13. It also affects FortiProxy versions before 7.2.4 and before 7.0.10.

What is the severity of CVE-2023-33306?

CVE-2023-33306 has a severity rating of 6.5 (Medium).

How can an attacker exploit CVE-2023-33306?

An attacker can exploit CVE-2023-33306 by sending a specifically crafted request in the bookmark parameter, resulting in a denial of SSL VPN service.

Is there a fix for CVE-2023-33306?

Yes, Fortinet has released updates to address CVE-2023-33306. It is recommended to update to FortiOS 7.2.5, 7.0.11, or 6.4.13, or FortiProxy 7.2.4 or 7.0.10 to mitigate the vulnerability.

Vulnerability/
CVE-2023-33306

medium

6.5

CWE

476

16/6/2023

23/6/2023

CVE-2023-33306: Null Pointer Dereference

First published: Fri Jun 16 2023(Updated: )

A null pointer dereference in Fortinet FortiOS before 7.2.5, before 7.0.11 and before 6.4.13, FortiProxy before 7.2.4 and before 7.0.10 allows attacker to denial of sslvpn service via specifically crafted request in bookmark parameter.

Credit: psirt@fortinet.com

Affected Software	Affected Version	How to fix
Fortinet FortiProxy	>=7.0.0<7.0.10
Fortinet FortiProxy	>=7.2.0<7.2.4
Fortinet FortiOS	>=6.4.0<6.4.13
Fortinet FortiOS	>=7.0.0<7.0.11
Fortinet FortiOS	>=7.2.0<7.2.5

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Reference Links

https://fortiguard.com/psirt/FG-IR-23-015

Frequently Asked Questions

What is CVE-2023-33306?
CVE-2023-33306 is a null pointer dereference vulnerability in Fortinet FortiOS, FortiProxy, and SSL VPN service.
How does CVE-2023-33306 affect Fortinet products?
CVE-2023-33306 affects Fortinet FortiOS versions before 7.2.5, before 7.0.11, and before 6.4.13. It also affects FortiProxy versions before 7.2.4 and before 7.0.10.
What is the severity of CVE-2023-33306?
CVE-2023-33306 has a severity rating of 6.5 (Medium).
How can an attacker exploit CVE-2023-33306?
An attacker can exploit CVE-2023-33306 by sending a specifically crafted request in the bookmark parameter, resulting in a denial of SSL VPN service.
Is there a fix for CVE-2023-33306?
Yes, Fortinet has released updates to address CVE-2023-33306. It is recommended to update to FortiOS 7.2.5, 7.0.11, or 6.4.13, or FortiProxy 7.2.4 or 7.0.10 to mitigate the vulnerability.

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version/fortinet fortiproxy/7.0.0
version/fortinet fortiproxy/7.2.0
canonical/fortinet fortios
version/fortinet fortios/6.4.0
version/fortinet fortios/7.0.0
version/fortinet fortios/7.2.0

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