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Bug #40943 Function str_ireplace() crashes Apache server
Submitted: 2007-03-29 06:52 UTC Modified: 2007-04-30 13:12 UTC
Votes:4
Avg. Score:4.8 ± 0.4
Reproduced:4 of 4 (100.0%)
Same Version:4 (100.0%)
Same OS:4 (100.0%)
From: dzoukr at dzoukr dot cz Assigned:
Status: Not a bug Package: Reproducible crash
PHP Version: 5.2.1 OS: Windows XP SP2
Private report: No CVE-ID: None
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From: dzoukr at dzoukr dot cz
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 [2007-03-29 06:52 UTC] dzoukr at dzoukr dot cz 
Description:
------------
Hi guys, yesterday I found a bug, which has been making me mad for a long time. I found out that function str_ireplace() in current version (5.2.1) on Apache2 (WinXP SP2) crashes server. I looked in release log, where is something about buffer overflow for str_replace(), but it seems that function str_ireplace() has been forgotten. It happens on multi-using this function.

Reproduce code:
---------------
<?php
$string = "not so long text, maybe less than 1000 chars";
$result = str_ireplace("A", "B", $string);
$result = str_ireplace("B", "C", $result);
$result = str_ireplace("C", "D", $result);
$result = str_ireplace("D", "E", $result);
$result = str_ireplace("E", "F", $result);
?>

Expected result:
----------------
String with replaced chars

Actual result:
--------------
Apache crashes - browser says, that connection with server has been corrupted during page loading!

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 [2007-03-29 08:14 UTC] tony2001@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip
 [2007-03-29 08:25 UTC] dzoukr at dzoukr dot cz 
Ok, I will try it asap. But I have to find out first, how to re-install PHP on Wamp server (this is bundle of PHP+MySQL+Apache2). ;-) Can I expect this bug will be fixed in next PHP stable release version?
 [2007-03-29 08:28 UTC] tony2001@php.net 
You can expect it to be fixed in the snapshot.
To install it just download the .zip and unpack it.
 [2007-03-29 08:32 UTC] tony2001@php.net 
Btw, I can't replicate anything like that both in the snapshot and 5.2.1.
 [2007-03-29 09:20 UTC] dzoukr at dzoukr dot cz 
OK. Anyway, thanks for looking at it. Maybe it is some crazy combination of Apache settings and PHP. ;) As I said - I`m using Wamp server and I made almost no configuration changes, so who knows. Now I`m using str_replace() and no problem occured.
 [2007-04-06 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2007-04-16 10:25 UTC] qrf_coil at yahoo dot fr 
I've experienced the same problem on a production server of a customer, quiet annoying, even using str_replace instead will correct the problem

The server reported :
ERROR
The requested URL could not be retrieved
While trying to retrieve the URL: 
The following error was encountered:
    * Zero Sized Reply

Server used is a Unix with 
PHP 5.2.1-0.dotdeb.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Feb  9 2007 04:46:32)
 [2007-04-19 20:40 UTC] registry at ivide dot com 
I am having this problem as well on php 5.2.1. It does not happen on another server I have running php 5.1.6. I had it happen trying to str_ireplace with an array of characters to be replaced with "".

I am using XP Sp2, Apache 1.3.37, and Php stable 5.2.1.

The apache logs show "zend_mm_heap corrupted" and the browser says "The connection to the server was interrupted".
 [2007-04-29 21:21 UTC] qrf_coil at yahoo dot fr 
Good to hear, obviously it's a real bug.. could someone change the status of this bug ?
 [2007-04-30 08:43 UTC] dzoukr at dzoukr dot cz 
Status changed to open. That`s all I can do wit it ;)
 [2007-04-30 13:12 UTC] tony2001@php.net 
>I am having this problem as well on php 5.2.1.
I asked the original reporter to try the snapshot month ago, obviously you did not bother doing it, otherwise you would have discovered that the problem has been fixed months ago.
 
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