Other nomination

Cross domain content extraction with fake captcha

A UI-redressing refinement of Firefox's view-source: framing bug. Rather than make the victim drag a page's HTML source, the attacker frames view-source: so one line of the victim page sits inside a fake CAPTCHA field; a triple click selects the whole source line and the user copy-pastes it, leaking anti-CSRF tokens cross-domain.

In the archive

• Nominated for the 2011 Top 10 Web Hacking Techniques

Related sources

• Fake-CAPTCHA demonstration
• Demonstration source

Tags

• ui-redress
• clickjacking
• iframe
• sop-bypass
• csrf
• info-leak
• owasp-a01-2021
• owasp-a04-2021

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