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Bug #15292 include() causes maxclients in apache.
Submitted: 2002-01-30 01:59 UTC Modified: 2002-01-30 02:41 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: morbid at bloodheart dot com Assigned:
Status: Not a bug Package: Apache related
PHP Version: 4.1.1 OS: RedHat 7.1
Private report: No CVE-ID: None
View Developer Edit
 [2002-01-30 01:59 UTC] morbid at bloodheart dot com 
<?
$loca="http://www.bloodheart.com/php";
switch ($id) 
{
    //test1
    case blank1:
        $file="$loca/blank1";
    break;
    
    //test2
    case blank2:
        $file="$loca/blank2";
    break;
//test (This is where the bug starts.)    
//    Note if you copy this file to another file and set the default as thatfilename (with .php ext)
//       Then spawns maxclients for apache, and stays that way forever, a very nasy loop. or until you restart apache
//        *Example*
//    default:
//        $file="$loca/bug2.php";

    default:
        $file="$loca/blank3";
    break;
}
?>
--CONFIGLINE
./configure --with-mysql=/usr/local/mysql \
--enable-track-vars \
--with-apache=../apache_1.3.22 \
--with-mm=../mm-1.1.3 \
--with-openssl=../openssl-0.9.6c \
--with-config-file-path=/usr/local/lib/php

I don't recall this happening with an earlier version of php.

This just started with 4.1.1

If you need anymore information please let me know

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 [2002-01-30 02:10 UTC] swm@php.net 
Correct me I am wrong, but you seem to be saying that your
script includes a file via HTTP which is either itself or
another file which includes itself or the original (I cannot
tell from your description). But yes, if a script needs to
include itself than that will create an infinite loop.
There is no way that the scripting engine could preemptively
terminate this loop when HTTP based includes are being used.

Reopen if I have mis-understood.
 [2002-01-30 02:18 UTC] swm@php.net 
Status should have been feedback.
 [2002-01-30 02:32 UTC] morbid at bloodheart dot com 
Ok, so there is no way to really stop this? Just let it continue forever? (Until you restart apache?)
Cause yes that is basicly it, it just includes the file over and over.
 [2002-01-30 02:41 UTC] derick@php.net 
User include_once to prevent this... not a bug > bogus.

Derick
 [2002-01-30 03:15 UTC] morbid at bloodheart dot com 
Ok, so if someone is running a site (For users) the users could do this and cause sites to go down with just a few lines of code?

adding include_once; didn't work unless it occompanied by return; 

eg...
//test (This is where the bug starts.) 
        default:
                $file="$loca/bug2.php";
        return;
}
include_once($file);

There should be some sort of limit on this? Unless there is and I don't know of it. if there is I'm sorry. I have searched for something like this and haven't come across anything.

Jason
 
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