Mambo AkoBook Component Script Insertion Vulnerability

Thursday, 6 September 2007

######################################################################
#
# Mambo Component AkoBook <= 3.42 - XSS/Script Injection Vulnerability
#
# Date : 04-september-2007
# Risk : Low
# Vendor URL : http://www.mamboportal.com
# Dork : allinurl: index.php?option=com_akobook
#
# Found By : Rubén Ventura Piña (Trew)
# Contact Info : http://trew.icenetx.net
# trew.revolution@gmail.com
# ICEnetX Team - http://icenetx.net
#
######################################################################
#
# Greetings oh earthlings:
# Ayzax, BRIO, Gaper, (All ICEnetX Team), n3, Tog, ta^3, Paisterist,
# kbyte, and to all people who likes H.I.M, lol.
#
# "Maybe you can't break the system, but you can always hack it."
#
######################################################################
#
## Vulnerability ##
#
# AkoBook is a Guestbook component for Mambo. A vulnerability in AkoBook
# 3.42 and earlier versions can be exploited by malicious people to conduct
# cross-site scripting attacks.
#
# Input passed to the "gbmail" and "gbpage" parameters in the signing page
# (generally index.php?option=com_akobook&func=sign) is not properly santised.
# This can be exploited to inject script code into the page, and as a result
# conduct a persistente XSS attack.
#
# Some characters as "<" and ">" are not allowed but simple quotes can still
# be used. The following code in one of the vulnerable inputs would result in
# a XSS:
# Injection: wawa' onload=javascript:alert(/XSS/) a='
#
# After the script is sent, it should appear in the guestbook source code
# like this, exploiting the XSS flaw:
#
# <a href='http://wawa\' onload=javascript:alert(/XSS/) a=\''>
# <img src='homepage.gif' alt='http://wawa\' onload=javascript:alert(/XSS/) a=\''></a>
#
#
## How to fix ##
#
# Santise quotes properly in all the form inputs.
#
# wawawa
#
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