back to article Potent malware link infects almost 300,000 webpages

A security researcher has identified a new attack that has infected almost 300,000 webpages with links that direct visitors to a potent cocktail of malicious exploits. The SQL injection attacks started in late November and appear to be the work of a relatively new malware gang, said Mary Landesman, a researcher with ScanSafe, a …

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simple attack

Just gonna quickly blackhole that domain before anyone finds out

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FAIL

SQL injection is easily prevented

if you parse your (PHP) input with:

$params['name'] = isset($_POST['name']) ? mysql_real_escape_string($_POST['name']) : '';

or if it's a numerical value you're expecting, even better:

$params['name'] = isset($_POST['name']) ? (int)($_POST['name']) : 0;

(use $_GET['name'] if you're passing parameters in the URL.)

And HTML injection is removed simply by:

$params['name'] = preg_replace("/\<.*\>/g", "", $params['name']);

Then you only work with the clean $params[] array. There's no reason any webmaster can't implement these most basic code checks. It's not rocket science.

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It's not rocket science

True - and in the .NET world you can use urlscan.

But it becomes trickier when you're responsible for a large, complex web site with poor documentation (and, trust me, there are rather a lot of these). Retrofitting is non-trivial and you may also need to introduce security testing and change management processes to ensure that vulnerabilities are not inadvertently reintroduced.

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