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Bug #54527 When %00 on POST deletes key-value pair
Submitted: 2011-04-14 04:12 UTC Modified: 2013-07-17 15:38 UTC
From: qiq9 at eloy dot serralaban dot com dot ar Assigned:
Status: No Feedback Package: Unknown/Other Function
PHP Version: Irrelevant OS: Linux kernel:2.6.18-194.26.1.el5
Private report: No CVE-ID: None
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 [2011-04-14 04:12 UTC] qiq9 at eloy dot serralaban dot com dot ar 
Description:
------------
When posting %00, it does not add it to $_POST or $_REQUEST arrays.

Example:
POST http://kemio.com.ar/bug.php HTTP/1.1
Host: kemio.com.ar
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0b11) Gecko/20100101 Firefox/4.0b11
Content-Length: 15
Connection: Keep-Alive

uno=1%002&dos=2

Test script:
---------------
...
<tr><th colspan="2">$_POST</th></tr>
<?php
foreach($_POST as $k=>$v)
 print("<tr><th>$k</th><td>$v</td></tr>\n");
?><tr><th colspan="2">$_SERVER</th></tr>
...

Expected result:
----------------
...
<tr><th colspan="2">$_POST</th></tr>
<tr><th>uno</th><td>1</td></tr>
<tr><th>dos</th><td>2</td></tr>
<tr><th colspan="2">$_SERVER</th></tr>
...

Actual result:
--------------
...
<tr><th colspan="2">$_POST</th></tr>
<tr><th>dos</th><td>2</td></tr>
<tr><th colspan="2">$_SERVER</th></tr>
...

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 [2011-04-19 08:39 UTC] aharvey@php.net
-Status: Open +Status: Feedback
 [2011-04-19 08:39 UTC] aharvey@php.net 
Which SAPI, Web server and version of PHP are you using, and what is the filter.default configuration setting set to in phpinfo()? Additionally, do you have any extensions loaded that may change the way PHP operates, such as Suhosin?

I can't reproduce this under Apache (using the apache2handler SAPI), for the record.
 [2011-04-19 23:59 UTC] qiq9 at eloy dot serralaban dot com dot ar
-Status: Feedback +Status: Open
 [2011-04-19 23:59 UTC] qiq9 at eloy dot serralaban dot com dot ar 
I'll check and post it. It happens on a server I hired.
 [2013-07-17 15:38 UTC] arpad@php.net
-Status: Open +Status: No Feedback
 [2013-07-17 15:38 UTC] arpad@php.net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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