PSIRT Advisory

FortiOS open redirect vulnerability

Summary

The FortiOS webui accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. The redirect input parameter is also prone to a cross site scripting.

Impact

Open redirect

Affected Products

FortiOS

Solutions

Upgrade to one the following FortiOS versions:

  • 5.0 branch: 5.0.13 or above
  • 5.2 branch: 5.2.3 or above
  • 5.4 branch: 5.4.0 or above
4.3 and lower branches are not affected by this vulnerability.

Acknowledgement

Fortinet is pleased to thanks to Javier Nieto from www.behindthefirewalls.com for reporting a FortiOS vulnerability under responsible disclosure