[FortiDeceptor] fsuis token does not expire after logout

Summary

An insufficient session expiration vulnerability in FortiDeceptor may allow an attacker to reuse the unexpired admin user session IDs to gain admin privileges, should the attacker be able to obtain that session ID via other, hypothetical attacks.

Affected Products

FortiDeceptor version 3.0.0 and below.

Solutions

Please upgrade to FortiDeceptor version 3.1.0 or above.

Acknowledgement

Fortinet is pleased to thank Danilo Costa from PBI for reporting this vulnerability under responsible disclosure.

Timeline

2020-06-21: Initial publication