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Bug #35138 Coredump on validation of empty domdocument
Submitted: 2005-11-07 13:34 UTC Modified: 2005-11-07 13:42 UTC
From: kpisman at gmail dot com Assigned:
Status: Not a bug Package: DOM XML related
PHP Version: 5.0.5 OS: FreeBSD 6.0
Private report: No CVE-ID: None
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 [2005-11-07 13:34 UTC] kpisman at gmail dot com 
Description:
------------
Segmentation fult when empy domDocument is validated with schema.

Please note, this bug is may be potential way for low-bandwith DoS attack for any service, that is validating input with schma.


Reproduce code:
---------------
<?
$myDom=new DomDocument();
$myDom->schemaValidate('http://www.w3.org/TR/xmldsig-core/xmldsig-core-schema.xsd');
?>

Expected result:
----------------
method must return false, excution must be continued.

Actual result:
--------------
[pisman@nothing]~/testsys]php ff.php 
zsh: segmentation fault (core dumped)  php ff.php


bt outpuut is seems like infinite recursion.

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 [2005-11-07 13:42 UTC] rrichards@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

not PHP issue bug in libxml schema error handling
 
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