Received: (qmail 27420 invoked by uid 501); 13 Sep 2000 22:14:27 -0000
Message-Id: <20000913221427.27419.qmail@locus.apache.org>
Date: 13 Sep 2000 22:14:27 -0000
From: Todd Vierling <tv@pobox.com>
Reply-To: tv@pobox.com
To: submit@bugz.apache.org
Subject: ServerTokens offers no "NONE" option
X-Send-Pr-Version: 3.110

>Number:         6530
>Category:       protocol
>Synopsis:       ServerTokens offers no "NONE" option
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          change-request
>Submitter-Id:   apache
>Arrival-Date:   Wed Sep 13 15:20:02 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     tv@pobox.com
>Release:        1.3.12
>Organization:
apache
>Environment:
Any
>Description:
Yeah, I know, it's nice to know how many Apache servers are out there in the world, and what their revisions are.

However, as a corporate security directive for my last contract, I had to hack out the C code that generated the Server: header entirely.  The ServerTokens option has no way to actually turn the Server: header OFF, and the mod_header Header directive can't "unset" it.

There are legitimate security reasons for disabling this response header, and Apache already offers differing degrees of the response, so why not "no response"?
>How-To-Repeat:
See documentation for ServerTokens and try "unset"ting the Server header using mod_headers.
>Fix:
Offer a "NONE" option which will suppress the Server: header entirely.

(Note that this could also be combined with BrowserMatch and metadata to produce flexible Server: header responses for working around broken browsers.)
>Release-Note:
>Audit-Trail:
>Unformatted:
 [In order for any reply to be added to the PR database, you need]
 [to include <apbugs@Apache.Org> in the Cc line and make sure the]
 [subject line starts with the report component and number, with ]
 [or without any 'Re:' prefixes (such as "general/1098:" or      ]
 ["Re: general/1098:").  If the subject doesn't match this       ]
 [pattern, your message will be misfiled and ignored.  The       ]
 ["apbugs" address is not added to the Cc line of messages from  ]
 [the database automatically because of the potential for mail   ]
 [loops.  If you do not include this Cc, your reply may be ig-   ]
 [nored unless you are responding to an explicit request from a  ]
 [developer.  Reply only with text; DO NOT SEND ATTACHMENTS!     ]