BugTraq
JE Guestbook 1.0 Joomla Component Multiple Remote Vulnerabilities Sep 30 2010 09:49AM
Salvatore Fresta aka Drosophila (drosophilaxxx gmail com)

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_ite
mid=-1 OR (SELECT(IF(0x41=0x41, BENCHMARK(999999999,NULL),NULL)))

V. FIX
______

No fix.

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