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Bug #34326 chunked Transfer-Encoding forbidden
Submitted: 2005-09-01 12:10 UTC Modified: 2005-09-01 16:35 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: vitaliy dot okulov at gmail dot com Assigned:
Status: Not a bug Package: Apache related
PHP Version: 4.4.0 OS: Linux
Private report: No CVE-ID: None
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From: vitaliy dot okulov at gmail dot com
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 [2005-09-01 12:10 UTC] vitaliy dot okulov at gmail dot com 
Description:
------------
Hi all. I think i found some little bug.
1 of my client use midlet program to comunicate with some php script at my server by POST method. 


Reproduce code:
---------------
This Java program connect to my Apache 1.3.33 web server & get 411 error.
In my logs I get "chunked Transfer-Encoding forbidden" & thats all.
When i dump tcp packets to 80 port from IP of my client i see that there is no 
Content-Length field in request. Thats why, i think, my client get 411 error.
But the same php script & java client program perfectly work at apache 2.0.50 
server.
There is phpinfo from my server:
http://mms2u.ru/a.php
And from my client ex-server:
http://mms2you.ru/a.php

Also i try to test same java program at my homebox. With default apache 2.0.54 
there is no problem and with apache 1.3.33 problem still exist.
There is acess & error logs:

my test homebox apache 2.0.54 server:
10.0.15.8 - - [01/Sep/2005:02:08:30 +0400] "POST http://test/chat/index.php 
HTTP/1.1" 200 35536 "-" "Chat Reader 0.38"

my test homebox apache 1.3.33 server:
[Thu Sep 01 01:53:02 2005] [error] [client 10.0.15.8] chunked Transfer-Encoding 
forbidden: /chat/index.php
10.0.15.8 - - [01/Sep/2005:01:53:02 +0400] "POST http://test/chat/index.php 
HTTP/1.1" 411 357

There is dump of request to apache 1.3.33 server:

12:04:42.683077 IP 82.204.131.186.1076 > 83.222.15.195.http: S 4171925538:
4171925538(0) win 65535 <mss 1460,nop,nop,sackOK>
        0x0000:  4500 0030 04ae 4000 7606 c5f2 52cc 83ba  E..0..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 8822 0000 0000  S....4.P..."....
        0x0020:  7002 ffff c3a6 0000 0204 05b4 0101 0402  p...............
12:04:42.683260 IP 83.222.15.195.http > 82.204.131.186.1076: S 1224834130:
1224834130(0) ack 4171925539 win 5840 <mss
1460,nop,nop,sackOK>
        0x0000:  4500 0030 0000 4000 4006 00a1 53de 0fc3  E..0..@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7c52 f8aa 8823  R....P.4I.|R...#
        0x0020:  7012 16d0 e771 0000 0204 05b4 0101 0402  p....q..........
12:04:42.706476 IP 82.204.131.186.1076 > 83.222.15.195.http: . ack 1 win 65535
        0x0000:  4500 0028 04af 4000 7606 c5f9 52cc 83ba  E..(..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 8823 4901 7c53  S....4.P...#I.|S
        0x0020:  5010 ffff 2b06 0000 0000 0000 0000       P...+.........
12:04:42.713347 IP 82.204.131.186.1076 > 83.222.15.195.http: P 1:285(284) ack 1 
win 65535
        0x0000:  4500 0144 04b0 4000 7606 c4dc 52cc 83ba  E..D..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 8823 4901 7c53  S....4.P...#I.|S
        0x0020:  5018 ffff 8bcd 0000 504f 5354 2068 7474  P.......POST.htt
        0x0030:  703a 2f2f 6d6d 7332 752e 7275 2f63 6861  p://mms2u.ru/cha
        0x0040:  742f 696e 6465 782e 7068 7020 4854 5450  t/index.php.HTTP
        0x0050:  2f31 2e31 0d0a 486f 7374 3a6d 6d73 3275  /1.1..Host:mms2u
        0x0060:  2e72 750d 0a43 6f6e 6e65 6374 696f 6e3a  .ru..Connection:
        0x0070:  636c 6f73 650d 0a43 6f6e 7465 6e74 2d54  close..Content-T
        0x0080:  7970 653a 7465 7874 2f68 746d 6c3b 2063  ype:text/html;.c
        0x0090:  6861 7273 6574 3d77 696e 646f 7773 2d31  harset=windows-1
        0x00a0:  3235 310d 0a55 7365 722d 4167 656e 743a  251..User-Agent:
        0x00b0:  4368 6174 2052 6561 6465 7220 302e 3338  Chat.Reader.0.38
        0x00c0:  0d0a 4361 6368 652d 436f 6e74 726f 6c3a  ..Cache-Control:
        0x00d0:  6e6f 2d63 6163 6865 0d0a 7472 616e 7366  no-cache..transf
        0x00e0:  6572 2d65 6e63 6f64 696e 673a 6368 756e  er-encoding:chun
        0x00f0:  6b65 640d 0a0d 0a34 370d 0a6d 6964 6c65  ked....47..midle
        0x0100:  743d 302e 3338 266d 6f64 653d 3126 7573  t=0.38&mode=1&us
        0x0110:  6572 6e61 6d65 3d64 656d 6f26 7061 7373  ername=demo&pass
        0x0120:  776f 7264 3d64 656d 6f26 706d 5f61 6c6c  word=demo&pm_all
        0x0130:  3d31 266c 613d 3126 706d 3d31 2675 6f6c  =1&la=1&pm=1&uol
        0x0140:  3d31 0d0a                                =1..
12:04:42.713390 IP 83.222.15.195.http > 82.204.131.186.1076: . ack 285 win 6432
        0x0000:  4500 0028 12ae 4000 4006 edfa 53de 0fc3  E..(..@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7c53 f8aa 893f  R....P.4I.|S...?
        0x0020:  5010 1920 10ca 0000                      P.......
12:04:42.714023 IP 83.222.15.195.http > 82.204.131.186.1076: P 1:474(473) ack 
285 win 6432
        0x0000:  4500 0201 12b0 4000 4006 ec1f 53de 0fc3  E.....@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7c53 f8aa 893f  R....P.4I.|S...?
        0x0020:  5018 1920 c41e 0000 4854 5450 2f31 2e31  P.......HTTP/1.1
        0x0030:  2034 3131 204c 656e 6774 6820 5265 7175  .411.Length.Requ
        0x0040:  6972 6564 0d0a 4461 7465 3a20 5468 752c  ired..Date:.Thu,
        0x0050:  2030 3120 5365 7020 3230 3035 2030 383a  .01.Sep.2005.08:
        0x0060:  3034 3a34 3220 474d 540d 0a53 6572 7665  04:42.GMT..Serve
        0x0070:  723a 2041 7061 6368 650d 0a43 6f6e 6e65  r:.Apache..Conne
        0x0080:  6374 696f 6e3a 2063 6c6f 7365 0d0a 5472  ction:.close..Tr
        0x0090:  616e 7366 6572 2d45 6e63 6f64 696e 673a  ansfer-Encoding:
        0x00a0:  2063 6875 6e6b 6564 0d0a 436f 6e74 656e  .chunked..Conten
        0x00b0:  742d 5479 7065 3a20 7465 7874 2f68 746d  t-Type:.text/htm
        0x00c0:  6c3b 2063 6861 7273 6574 3d69 736f 2d38  l;.charset=iso-8
        0x00d0:  3835 392d 310d 0a0d 0a31 3163 0d0a 3c21  859-1....11c..<!
        0x00e0:  444f 4354 5950 4520 4854 4d4c 2050 5542  DOCTYPE.HTML.PUB
        0x00f0:  4c49 4320 222d 2f2f 4945 5446 2f2f 4454  LIC."-//IETF//DT
        0x0100:  4420 4854 4d4c 2032 2e30 2f2f 454e 223e  D.HTML.2.0//EN">
        0x0110:  0a3c 4854 4d4c 3e3c 4845 4144 3e0a 3c54  .<HTML><HEAD>.<T
        0x0120:  4954 4c45 3e34 3131 204c 656e 6774 6820  ITLE>411.Length.
        0x0130:  5265 7175 6972 6564 3c2f 5449 544c 453e  Required</TITLE>
        0x0140:  0a3c 2f48 4541 443e 3c42 4f44 593e 0a3c  .</HEAD><BODY>.<
        0x0150:  4831 3e4c 656e 6774 6820 5265 7175 6972  H1>Length.Requir
        0x0160:  6564 3c2f 4831 3e0a 4120 7265 7175 6573  ed</H1>.A.reques
        0x0170:  7420 6f66 2074 6865 2072 6571 7565 7374  t.of.the.request
        0x0180:  6564 206d 6574 686f 6420 504f 5354 2072  ed.method.POST.r
        0x0190:  6571 7569 7265 7320 6120 7661 6c69 6420  equires.a.valid.
        0x01a0:  436f 6e74 656e 742d 6c65 6e67 7468 2e3c  Content-length.<
        0x01b0:  503e 0a63 6875 6e6b 6564 2054 7261 6e73  P>.chunked.Trans
        0x01c0:  6665 722d 456e 636f 6469 6e67 2066 6f72  fer-Encoding.for
        0x01d0:  6269 6464 656e 3a20 2f63 6861 742f 696e  bidden:./chat/in
        0x01e0:  6465 782e 7068 703c 503e 0a3c 2f42 4f44  dex.php<P>.</BOD
        0x01f0:  593e 3c2f 4854 4d4c 3e0a 0d0a 300d 0a0d  Y></HTML>...0...
        0x0200:  0a                                       .
12:04:42.714106 IP 83.222.15.195.http > 82.204.131.186.1076: F 474:474(0) ack 
285 win 6432
        0x0000:  4500 0028 12b2 4000 4006 edf6 53de 0fc3  E..(..@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7e2c f8aa 893f  R....P.4I.~,...?
        0x0020:  5011 1920 0ef0 0000                      P.......
12:04:42.738956 IP 82.204.131.186.1076 > 83.222.15.195.http: P 285:290(5) ack 1 
win 65535
        0x0000:  4500 002d 04b2 4000 7606 c5f1 52cc 83ba  E..-..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 893f 4901 7c53  S....4.P...?I.|S
        0x0020:  5018 ffff e5c2 0000 300d 0a0d 0a00       P.......0.....
12:04:42.740955 IP 82.204.131.186.1076 > 83.222.15.195.http: . ack 475 win 65062
        0x0000:  4500 0028 04b3 4000 7606 c5f5 52cc 83ba  E..(..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 8944 4901 7e2d  S....4.P...DI.~-
        0x0020:  5010 fe26 29e4 0000 0000 0000 0000       P..&).........
12:04:42.779569 IP 83.222.15.195.http > 82.204.131.186.1076: . ack 290 win 6432
        0x0000:  4500 0028 12b4 4000 4006 edf4 53de 0fc3  E..(..@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7e2d f8aa 8944  R....P.4I.~-...D
        0x0020:  5010 1920 0eeb 0000                      P.......
12:04:49.071098 IP 82.204.131.186.1076 > 83.222.15.195.http: F 290:290(0) ack 
475 win 65062
        0x0000:  4500 0028 04b8 4000 7606 c5f0 52cc 83ba  E..(..@.v...R...
        0x0010:  53de 0fc3 0434 0050 f8aa 8944 4901 7e2d  S....4.P...DI.~-
        0x0020:  5011 fe26 29e3 0000 0000 0000 0000       P..&).........
12:04:49.071131 IP 83.222.15.195.http > 82.204.131.186.1076: . ack 291 win 6432
        0x0000:  4500 0028 0cc8 4000 4006 f3e0 53de 0fc3  E..(..@.@...S...
        0x0010:  52cc 83ba 0050 0434 4901 7e2d f8aa 8945  R....P.4I.~-...E
        0x0020:  5010 1920 0eea 0000                      P.......

12 packets captured
15 packets received by filter
0 packets dropped by kernel

Also:



% telnet www.php.net 80
Trying 64.246.30.37...
Connected to rs1.php.net.
Escape character is '^]'.
POST /submit-event.php HTTP/1.1
Host: www.php.net
Transfer-Encoding: chunked

HTTP/1.1 411 Length Required
Date: Sun, 02 Jan 2005 19:19:35 GMT
Server: Apache/1.3.26 (Unix) mod_gzip/1.3.26.1a PHP/4.3.3-dev
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=iso-8859-1

11e
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>411 Length Required</TITLE>
</HEAD><BODY>
<H1>Length Required</H1>
A request of the requested method POST requires a valid Content-length.<P>
chunked Transfer-Encoding forbidden: /submit-event.php<P>
</BODY></HTML>

0

Connection closed by foreign host.

And, here's a beauty:

% telnet www.microsoft.com 80
Trying 207.46.250.222...
Connected to origin2.microsoft.com.
Escape character is '^]'.
GET / HTTP/1.1
Host: www.microsoft.com
Transfer-Encoding: chunked

HTTP/1.1 404 Not Found
Content-Length: 103
Content-Type: text/html
Server: Microsoft-IIS/6.0
Date: Sun, 02 Jan 2005 19:13:28 GMT
Connection: close

<html><head><title>Error</title></head><body>The system cannot find the
file specified.
</body></html>

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 [2005-09-01 15:27 UTC] sniper@php.net 
And this would be PHP bug because..? (if it works with apache2 but not apache1, doesn't it mean it's just an apache bug?)
 [2005-09-01 15:46 UTC] vitaliy dot okulov at gmail dot com 
I thought thats way too, but:
1 - http://issues.apache.org/bugzilla/show_bug.cgi?id=36451
2 - I found code "setup_client_block(r, REQUEST_CHUNKED_ERROR)" only in module for Apache 1.3.x. And  there is no code to process REQUEST_CHUNKED_ERROR in Apache 2.0.x. So i think its a bug or mistake in module for Apache 1.3.x (forget to remove REQUEST_CHUNKED_ERROR) or in module for Apache 2.0.x (forget to add REQUEST_CHUNKED_ERROR).

Because Apache correctly process request without Content-Length field in request i search way how remove this check in php module for Apache 1.3.x.
 [2005-09-01 16:23 UTC] sniper@php.net 
Your external thingie doesn't set content-length and that's bug in PHP because..?
 [2005-09-01 16:32 UTC] vitaliy dot okulov at gmail dot com 
Bacause if php module process without any error request (without Content-Length) for Apache 2.0.x and cant process same request for Apache 1.3.x it`s bug or in module for 1.3 or for 2.0.
Or php module can process request (without Content-Length) for 2.0 & cant for 1.3?
 [2005-09-01 16:35 UTC] sniper@php.net 
Apparently Apache2 is better.
 
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