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Network World - A Web hack that can endanger online banking transactions is ranked the No. 1 new Web hacking technique for 2010 in a top 10 list selected by a panel of experts and open voting.
FROM THE SECURITY WORLD: Quirky moments at Black Hat DC 2011
If encryption data in the cookie has been changed, the way ASP.NET handles it results in the application leaking some information about how to decrypt the traffic. With enough repeated changes and leaked information, the hacker can deduce which possible bytes can be eliminated from the encryption key. That reduces the number of unknown bytes to a small enough number to be guessed.
The developers of the hack -- Juliano Rizzo and Thai Duong -- have developed a tool for executing the hack.
Padding Oracle was voted No. 1 by a voting process that included Ed Skoudis, founder of InGuardians; Girogio Maone, the author of NoScript; Armorize CEO Caleb Sima; Veracode CTO Chris Wysopal; OWASP Chairman and CEO Jeff Williams; security consultant Charlie Miller of Independent Security Evaluators; IOActive director of penetration testing Dan Kaminsky; Steven Christey of Mitre; and White Hat Security vice president of operations Arian Evans.
The ranking was sponsored by Black Hat, OWASP and White Hat Security, and details of the hacks will be the subject of a presentation at the IT-Defense 2011 conference next month in Germany.
Here are the rest of the top 10 Web hacks voted in the competition:
2. Evercookie -- This enables a Java script to create cookies that hide in eight different places within a browser, making it difficult to scrub them. Evercookie enables the hacker to identify the machine even if traditional cookies have been removed. (Created by Samy Kamkar.)
3. Hacking Autocomplete -- If the feature in certain browsers that automatically completes forms on Web sites (autocomplete) is turned on, script on a malicious Web site can force the browser to fill in personal data by tapping various data stored on the victim's computer. (Created by Jeremiah Grossman.)
4. Attacking HTTPS with Cache Injection -- Injection of malicious Java script libraries into a browser cache enables attackers to compromise Web sites protected by SSL. This will work until the cache is cleared. Nearly half the top 1 million Web sites use external Java script libraries. (Crated by Elie Bursztein, Baptiste Gourdin and Dan Boneh.)
5. Bypassing CSRF protections with ClickJacking and HTTP Parameter Pollution -- Gets around cross site request forgery defenses and tricks victims into revealing their e-mail IDs. Using these, the attackers can reset the victim's passwords and gain access to their accounts. (Created by Lavakumar Kuppan.)
6. Universal XSS in IE8 -- Internet Explorer 8 has cross-site scripting protections that this exploit can circumvent and allow Web pages to be rendered improperly in a potentially malicious manner.