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Header Vary: Accept-Encoding - security risk ?

May 28, 2014 05:20PM
Dear list,

I have enabled gzip with
...
gzip on;
gzip_http_version 1.0;
gzip_vary on;
...
to satisfy incoming HTTP 1.0 requests.

In a very similiar setup which got OWASP-evaluated, I read this - marked as a defect:
"The web server sent a Vary header, which indicates that server-driven negotiation was done to determine which content should be delivered. This may indicate that different content is available based on the headers in the HTTP request."
IMHO this is a false positive ...

This is what I send:
HTTP/1.1 200 OK
Server: nginx
Date: Tue, 27 May 2014 17:55:23 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
Content-Length: ...
...

What do you think ?
Subject Author Posted

Header Vary: Accept-Encoding - security risk ?

chili_confits May 28, 2014 05:20PM

Re: Header Vary: Accept-Encoding - security risk ?

Maxim Dounin May 29, 2014 11:20AM

Re: Header Vary: Accept-Encoding - security risk ?

W-Mark Kubacki May 29, 2014 11:50AM

Re: Header Vary: Accept-Encoding - security risk ?

B.R. May 29, 2014 02:30PM



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