Nginx version disclosure via forbidden page

This information might help an attacker gain a greater understanding of the systems in use and potentially develop further attacks targeted at the specific version of Nginx. Impact: An attacker might use the disclosed information to harvest specific security vulnerabilities for the version identified. Steps to reproduce: 1. Go to ```https://engineeringblog.yelp.com/images/previews/``` 2. Now the nginx version: ```nginx/1.11.3``` shows in bottom of the error page. I hope this will fixed soon :)) Have a nice day guys, ~Ry