Number: AL16-017
Date: 18 August 2016
Purpose
The purpose of this alert is to bring attention to the FortiGate Cookie Parser Buffer Overflow Vulnerability.
Assessment
CCIRC is aware of a recently disclosed vulnerability in FortiGate firmware (FOS). This vulnerability, when exploited by a specially crafted HTTP request, can allow a malicious actor to gain remote administrative access.
Affected firmware versions:
FortiGate versions 4.3.8 and prior
FortiGate versions 4.2.12 and prior
FortiGate versions 4.1.10 and prior
Suggested Action
CCIRC recommends that organizations review the following mitigation information and consider their implementation in the context of their network environment.
Upgrade to release 5.x.
Upgrade to release 4.3.9 or above for models not compatible with FortiOS 5.x.
References:
Fortinet Advisory
http://fortiguard.com/advisory/FG-IR-16-023