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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

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Invision Power Top Site List SQL Injection

Vendor: Invision Power Services
Product: Invision Power Top Site List
Version: <= 1.1 RC 2
Website: http://www.invisiontsl.com/

BID: 9945 

Description:
Invision Power Top Site List is a flexible site ranking script written in PHP, the popular programming choice for web developers. Featuring an impressive feature set with a user-friendly interface your community will feel at home using the system. 

SQL Injection Vulnerability:
Invision Power Top Site List is prone to an SQL Injection vuln in its "comment" feature. This issue is very much exploitable as the injection happens right in the middle of a WHERE statement. Lets have a look at an example error message to get a better idea of what is going on. 

Error: Error executing query

The software returned the following error:

You have an error in your SQL syntax. Check the manual that 
corresponds to your MySQL server version for the right syntax 
to use near '[ Evil_Query ]' at line 1

Query Executed: SELECT * FROM tsl_sites WHERE id = [Evil_Query]

As we can see from this it would be of little difficulty for any attacker to execute arbitrary requests. For example pulling the admin hash and/or possibly taking admin control over an affected Invision Power Top Site List. Below is an example url to show how the issue could be exploited. 

index.php?act=comments&id=[Evil_Query] 

Solution:
The Invision Power Services team were contacted immediately and hopefully a fix will be available soon since this is an application that cost users money to use. 

Credits:
James Bercegay of the GulfTech Security Research Team.