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Bug #60264 stack/memory exhaustion
Submitted: 2011-11-11 11:49 UTC Modified: 2011-11-11 12:57 UTC
From: max at cxib dot net Assigned:
Status: Duplicate Package: *Regular Expressions
PHP Version: 5.4.0RC1 OS: linux
Private report: No CVE-ID: None
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From: max at cxib dot net
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 [2011-11-11 11:49 UTC] max at cxib dot net 
Description:
------------
pcre allow to stack or heap memory exhaustion

stack

cx () cx64:/www$ cat crash0.php
<?php
preg_match("/((.*)((!?.*)+)\\w+)/iU",str_repeat(" ",4096),$exxx);
?>
cx () cx64:/www$ php crash0.php
Segmentation fault

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 [2011-11-11 12:57 UTC] aharvey@php.net 
Depressingly, this is expected behaviour. See also bug #52818, amongst (many) 
others.
 [2011-11-11 12:57 UTC] aharvey@php.net
-Status: Open +Status: Duplicate
 
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