Home page logo

bugtraq logo Bugtraq mailing list archives

Re: move_uploaded_file breaks safe_mode restrictions in PHP
From: Patrick Oonk <patrick () pine nl>
Date: Thu, 21 Mar 2002 16:23:12 +0100

On Thu, Mar 21, 2002 at 10:55:18AM +0100, sesser () php net wrote:

first of all i want to clearify, that move_uploaded_file isn't breaking
safe_mode restrictions. move_uploaded_file lacked an openbasedir check.
That feature was added on the request of tozz. move_uploaded_file was
able to move files to directories writeable for the apache user because
of some other bug (, that was fixed several days before the bugreport)
that was not within move_uploaded_file but in some other place.

Beside that: maybe you can tell me where the apache user has write
access to (beside /tmp) on a properly configured system?
This bug only allows to create new files, it is not possible to
write to already existing files. So the whole "security" impact on
a properly configured system is in my eyes that a customer is able
to fill the harddisk.

Stefan Esser

/usr/local/apache/proxy on a default apache install.


 patrick oonk - pine internet - patrick () pine nl - www.pine.nl/~patrick
 T:+31-70-3111010 - F:+31-70-3111011 - Read news at http://security.nl 
 PGPid A4E74BBF  fp A7CF 7611 E8C4 7B79 CA36  0BFD 2CB4 7283 A4E7 4BBF
 Note: my NEW PGP key is available at http://www.pine.nl/~patrick/
 Excuse of the day: bad ether in the cables

  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]