Exploit Labs Security Advisory 2006.4

2006-07-02T00:00:00
ID PACKETSTORM:47940
Type packetstorm
Reporter Donnie Werner
Modified 2006-07-02T00:00:00

Description

                                        
                                            ` - EXPL-A-2006-004 exploitlabs.com Advisory 049 -  
- phpFormGenerator -  
  
  
  
  
AFFECTED PRODUCTS  
=================  
phpFormGenerator < v2.09  
http://phpformgen.sourceforge.net/  
  
  
OVERVIEW  
========  
phpFormGenerator is an easy-to-use tool to create reliable   
and efficient web forms in a snap. No programming of any   
sort is required. Just follow along the phpFormGenerator   
wizard and at the end, you will have a fully functional web   
form!  
  
note:  
as stated by the vendor this script is widely used with cPanel  
and other hosting provider solutions.  
  
  
  
DETAILS  
=======  
phpFormGenerator by default installs all directories  
as chmod 777 and will not function if they are not set as such.  
  
in the readme:  
"3. Set read+write+execute file permissions on the 'forms'  
directory and *everything* inside it   
(including all subdirectories and files)  
  
UNIX:  
chmod -R 777 forms"  
  
in process2.php:  
"please make sure that the forms directory (and everything in it)  
has read+write access. you can achieve this by issuing the following  
command on linux/unix:  
chmod -R 777 forms"  
  
  
researcher note:  
when the applications directories are not set 777 the app errors with:  
  
  
"File and Directory permissions   
The forms directory is not writeable.  
The forms/admin directory is not writeable.  
The use directory is not writeable.  
Please give read+write permissions to all the files  
and directories mentioned above. Refresh this page  
after you have done so."  
  
  
SOLUTION  
========  
vendor contact:  
Musawir Ali" musawir@gmail.com June 30, 2006  
  
patch: none ( see vendor response )  
  
  
VENDOR RESPONSE  
===============  
"there are no security flaws ... if you had taken a moment to think,  
you would realize that a a major software company such as cPanel would  
not be shipping phpFormGenerator with their scripts if it had flaws.  
In any case, the program has been thoroughly tested by myself and  
other security experts and is not known to have any issues.  
  
777 is never forced, the suggested method is to give write permissions  
to the group the process belongs to.  
upload function is "insecure". arbitrary php functions are insecure...  
could you be any more vague? You seem to be one of those ignorant  
nuts who shout slogans like "windows sucks" "linux owns" "your server  
is insecure" without realizing the garbage spooling out of your mouth.  
  
you're wasting my time.  
btw.. just so that you know, i have been on openbsd's development  
team, written the opengl kit for the openbeos OS project (now Haiku),  
and am an official GNU maintainer:  
http://www.gnu.org/people/people.html (search for my name) ... what  
you should be doing is thinking about how contributing to the  
opensource community and not being a bitch."  
  
  
  
PROOF OF CONCEPT  
================  
1.browse to the default install directory  
  
2.create new form with the "file upload" function  
  
3.complete the form using "Insert data to MySQL database table? = no"  
  
4.as directed browse to "http://[host]/[appdir]/[newform_name]/form1.html"  
  
5.upload phpshell type of script  
  
6.if you supplied an email address, the link will be sent to you  
http://[host]/[appdir]/[newform_name]/files/thescript_name_generated.php  
  
  
CREDITS  
=======  
This vulnerability was discovered and researched by   
Donnie Werner of exploitlabs  
  
Donnie Werner  
Information Security Specialist  
wood@exploitlabs.com  
morning_wood@zone-h.org  
  
--   
web: http://exploitlabs.com  
  
http://exploitlabs.com/files/advisories/EXPL-A-2006-004-phpformgen.txt  
  
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