Known Issue: FME Server missing validation which may result in an unwanted redirect upon login

This known issue affects all versions of FME Server. Public-facing FME Server instances, including FME Cloud, are at higher risk. We have not identified any active exploitation of these vulnerabilities in any of our products.

Symptom

When logging into FME Server, the request does not correctly validate the referrer value, which may result in an unwanted redirection. 

Cause

The login mechanism for FME Server is missing validation and detection which allows the referrer value to be overwritten, resulting in an undesired redirect.
 

Resolution 

Upgrade FME Server to 2021.2.6, 2022.0.1.1, or newer where this issue has been resolved. See the Downloads page for the latest version and our documentation for upgrading instructions. If you need assistance upgrading, please contact one of our Partners. 

Recognition 

Safe would like to thank Cycura Data Protection Corp. for making this responsible disclosure to us and recognize their contribution to increasing the security standard of FME.

Reporting Security Issues

If you believe you have discovered a vulnerability in FME, our website, or our other products, please email us as quickly as possible at security (at) safe (dot) com.

We greatly appreciate the efforts of security researchers and discoverers who share information on security issues with us, giving us a chance to improve our products and better protect our users.

Please note that we do not compensate individuals or organizations for identifying potential or confirmed security vulnerabilities.