What exactly is cross-site scripting (XSS), and how can I identify it?
XSS relies on the ability of code in your browser to interact with a site on your behalf using your session (cookies) so that it has the same access that you do. If you visit a page with malicious XSS code running, it can do any action on the site that you can, including posting new content, becoming "friends" with other users on the site, voting in polls, and changing administrative settings on the site.
Why is it called "cross-site scripting?"
From his post on the history of cross-site scripting , Jeremiah Grossman describes the original version of XSS:
How does cross-site scripting work?
A poorly configured site can allow a malicious visitor to use XSS to change a user's password . You can use the Security Review module to identify and fix some XSS vulnerabilities in a site. The Security Review module is not a complete solution; it only finds some common vulnerabilities. This module is only available for Drupal 7, and is currently being ported over to Drupal 8.
How do I identify cross-site scripting?
alert()box that pops up.
- Make the content of the alert specific to the place where the injection was made so you can trace it back.
- Try multiple methods, because some fields will filter some types of information, but not others.
Specifically, try to inject these two strings:
"><img src="u.png" onerror="alert('blog-node-title');"</script>
By starting with