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Posted to apache-bugdb@apache.org by Tomoaki IMAMURA <yu...@nic.fujitsu.com> on 2001/10/16 14:08:26 UTC
mod_negotiation/8551: Illegal requests in "Accept:" header unveils files with 406 result page
>Number: 8551
>Category: mod_negotiation
>Synopsis: Illegal requests in "Accept:" header unveils files with 406 result page
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: apache
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: apache
>Arrival-Date: Tue Oct 16 05:10:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: yu@nic.fujitsu.com
>Release: 1.3.22
>Organization:
apache
>Environment:
Tested on:
- SunOS agip 5.7 Generic_106541-08 sun4u sparc
- NetBSD 1.5.2 i386
>Description:
In any directory "MultiViews" options are allowed, users can get
"406 Not Acceptale" page by sending illegal "Accept:" line such as
"Accept: none". This unveils some partial directory information
regardless of "Indexes" option setting.
When user requests "/foo", "foo.*" are listed by 406 page. This sometimes
contains user backup files or so.
>How-To-Repeat:
% telnet yuppy 80
Connected to yuppy.
GET /index HTTP/1.1
Accept: none
Host: yuppy
Connection: close
HTTP/1.1 406 Not Acceptable
Date: Tue, 16 Oct 2001 11:37:48 GMT
Server: Apache/1.3.22 (Unix)
Alternates: {"index.html" 1 {type text/html} {length 80}}, {"index.html.bak" 1 {type text/plain} {length 80}}, {"index.html~" 1 {type text/plain} {length 80}}
Vary: negotiate,accept
TCN: list
Transfer-Encoding: chunked
Content-Type: text/html; charset=iso-8859-1
222
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>406 Not Acceptable</TITLE>
</HEAD><BODY>
<H1>Not Acceptable</H1>
An appropriate representation of the requested resource /index could not be found on this server.<P>
Available variants:
<ul>
<li><a href="index.html">index.html</a> , type text/html
<li><a href="index.html.bak">index.html.bak</a> , type text/plain
<li><a href="index.html~">index.html~</a> , type text/plain
</ul>
<HR>
<ADDRESS>Apache/1.3.22 Server at yuppy Port 80</ADDRESS>
</BODY></HTML>
>Fix:
adding validation checks for "Accept" or "Accept-*" headers
in parse_accept_headers() in mod_negotiate.c will improve this problem...
>Release-Note:
>Audit-Trail:
>Unformatted:
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