FortiNet FortiGate and FortiWiFi appliances contain multiple vulnerabilities

Overview

Fortinet FortiGate and FortiWiFi appliances are susceptible to man-in-the-middle attacks (CWE-300) and a heap-based overflow vulnerability (CWE-122).

Description

Fortinet FortiGate and FortiWiFi 4.00.6 and possibly earlier versions are susceptible to man-in-the-middle attacks (CWE-300) and a heap-based overflow vulnerability (CWE-122). The vulnerabilities exist in the FortiManager service running on TCP port 541.

CWE-300**: Channel Accessible by Non-Endpoint (‘Man-in-the-Middle’)**** -**CVE-2014-0351
The FortiManager remote service relies on client-side SSL certificates to encrypt traffic between the client and server. It is possible for a client to specify the SSL cipher suite to use for the connection, including a cipher suite that does not use certificates for authentication, such as ADH-AES256-SHA. This could allow an adjacent unprivileged attacker to man-in-the-middle communications between the client and FortiManager service.

CWE-122**: Heap-based Buffer Overflow -**CVE-2014-2216
The FortiManager remote service uses a protocol with a message format that will allocate space for eight argument pointers on the heap. However, when parsing the message format an arbitrary number of argument pointers are accepted. This can cause a heap-based buffer overflow. A remote, unprivileged attacker may be able to exploit this vulnerability to run arbitrary code on the appliance.

The CVSS score reflects CVE-2014-2216.

---

Impact

A remote unauthenticated attacker may be able to man-in-the-middle traffic between the client and FortiManager service or execute arbitrary code on the appliance.

---

Solution

Fortinet recommends upgrading to FortiOS 4.3.16, 5.0.8, or 5.2.0 to receive the patch. Additionally, please consider the following workaround.

---

Disable the remote management service

The FortiManager remote service that runs on port 541 can be disabled.

---

Vendor Information

730964

Filter by status: All Affected Not Affected Unknown

Filter by content: __ Additional information available

__ Sort by: Status Alphabetical

Expand all

Javascript is disabled. Click here to view vendors.

Fortinet, Inc. Affected

Updated: April 10, 2014

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Recurity Unknown

Notified: May 07, 2014 Updated: May 07, 2014

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor References

CVSS Metrics

Group	Score	Vector
Base	5.1	AV:N/AC:H/Au:N/C:P/I:P/A:P
Temporal	3.8	E:U/RL:OF/RC:C
Environmental	0.9	CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

• <https://cwe.mitre.org/data/definitions/122.html&gt;
• <https://cwe.mitre.org/data/definitions/300.html&gt;
• <http://www.fortiguard.com/advisory/FG-IR-14-006/&gt;

Acknowledgements

Thanks to Gregor Kopf of Recurity Labs GmbH for reporting this vulnerability.

This document was written by Jared Allar and Todd Lewellen.

Other Information

CVE IDs:	CVE-2014-0351, CVE-2014-2216
Date Public:	2014-08-19 Date First Published: