Practical web-attacks2
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This document outlines an agenda for a presentation on web application attacks. The presentation will demonstrate common vulnerabilities like unvalidated parameters, access control flaws, session management issues, cross-site scripting, injection flaws, improper error handling, AJAX security issues, authentication flaws, code quality issues, concurrency problems, and parameter tampering. It lists tools that will be used like WebGoat and WebScarab and provides references for further information.
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Using real, live examples, we will show how easy it is to exploit injection-based, XSS-based, and CSRF-based vulnerabilities in FaceBook, Google, Digg, LinkedIn, and other popular websites, and inject drive-by downloads.
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2. Information about various drive-by download infection vectors.
3. Appreciation of tools helpful for drive-by analysis, including Malzilla, spikermonkey, rhino, burp and wepawet
4. Realize why drive-by downloads are hard to analyze and detect. Why antivirus fail, why behavior-based approaches fail, and why even manual efforts are difficult
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This talk takes the view that the biggest weakness with the Same Origin Policy is that it must be implemented by every component of the browser independently, and if any component implements it differently to other components then the security posture of the browser is altered. As such this talk will examine how the 'Same Origin Policy' is implemented in different circumstances, especially in active content, and where the Same Origin Policy is not really enforced at all.
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This year saw the biggest news in Web security ever--Operation Aurora, which aimed at stealing source code and other intellectual properties and succeeded with more than 30 companies, including Google. Incidence response showed that the operation involved an IE 0-day drive-by-download, resulting in Google's compromise and leak of source code to jump points in Taiwan. The US Government is so concerned that they issued a demarche to the Chinese government.
Using real, live examples, we will show how easy it is to exploit injection-based, XSS-based, and CSRF-based vulnerabilities in FaceBook, Google, Digg, LinkedIn, and other popular websites, and inject drive-by downloads.
If drive-bys are so easy to inject into high-traffic websites, then the question becomes, how easy it is to make them undetectable by automated malware scanning services (such as Google's) and by human manual inspection? We will demonstrate how easy it is to defeat automated detection mechanisms and overview commonly used techniques.
We will reveal for the first time, in this conference, some very advanced techniques that are almost impossible to overcome by automated analysis in the past, now, and in the future. We will release Drivesploit, a drive-by download exploit framework implemented on top of Metasploit. We will go into depth on two particular techniques supported by Drivesploit's a) javascript obfuscation based on behavior-based fingerprinting, and b) javascript timelock puzzles. We will have live demos to show how this technique easily defeats both automated AND manual detection.
At the very beginning of our talk, we will be giving out a digg.com page, which we have infected with a drive-by download created with Drivesploit. Visiting this page with the right browser will trigger the exploit and download a malware that steals browser cookie files. The whole process will be undetectable by antivirus. The actual javascript drive-by code contains a secret phrase. We will give out an ipad to whomever from the audience that is able to correctly deobfuscate the javascript and give out the secret phrase.
Finally, we will present case studies on systems and processes that the largest organizations have put in place in order to fight against Web-based malware. We will also present case studies of our incidence response efforts with organizations hit by Web malware injections such as Google's aurora incident. Based in Taiwan, Co-speaker Wayne has been personally involved in such incidence response efforts since the late 90's.
All source codes related to POC exploits against FaceBook, Google, Digg, LinkedIn, etc, as well as source code of Drivesploit, will be released as open source at the conference.
Attendees will gain the following:
1. Understanding of drive-by downloads and associated terminologies.
2. Information about various drive-by download infection vectors.
3. Appreciation of tools helpful for drive-by analysis, including Malzilla, spikermonkey, rhino, burp and wepawet
4. Realize why drive-by downloads are hard to analyze and detect. Why antivirus fail, why behavior-based approaches fail, and why even manual efforts are difficult
5. Learning the Drivesploit framework and how it can be used to develop poc drive-bys
6. Learning two new deadly techniques: behavior-based browser finterprinting and javascript timelock puzzles
7. Learning how to implement above two using Drivesploit to defeat both automated and manual drive-by analysis
8. Knowledge about the available countermeasures to this threat
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The Same Origin Policy is the most talked about security policy which relates to web applications, it is the constraint within browsers that ideally stops active content from different origins arbitrarily communicating with each other. This policy has given rise to the class of bugs known as Cross-Site Scripting (XSS) vulnerabilities, though a more accurate term is usually JavaScript injection, where the ability to force an application to echo crafted data gives an attacker the ability to execute JavaScript within the context of the vulnerable origin.
This talk takes the view that the biggest weakness with the Same Origin Policy is that it must be implemented by every component of the browser independently, and if any component implements it differently to other components then the security posture of the browser is altered. As such this talk will examine how the 'Same Origin Policy' is implemented in different circumstances, especially in active content, and where the Same Origin Policy is not really enforced at all.
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Practical web-attacks2
- 1. Web application attacks – practical demonstration Ing. Pavol Lupták, CISSP, CEH www.nethemba.com www.nethemba.com
- 2. Agenda Unvalidates Parameters Access Control Flaws Session Management Flaws Cross Site Scripting (XSS) Injection flaws (bonus) Improper Error Handling (bonus) AJAX Security (bonus) www.nethemba.com
- 3. Access Controls Flaws Bypass a Path Based Access Control Scheme Bypass Data Layer Access Control Bypass Business Layer Access Control Remote Admin Access www.nethemba.com
- 4. AJAX Security DOMbased XSS Client Side Filtering Same Origin Policy (SOP) Protection XML Injection JSON Injection Silent Transaction Attacks Dangerous Use of Eval www.nethemba.com
- 5. Authentication flaws Forgot Password Multilevel Login 1 Multilevel Login 2 www.nethemba.com
- 6. Code Quality Discover Clues in the HTML code www.nethemba.com
- 7. Concurrency Shopping Card Concurrency Flaw www.nethemba.com
- 8. Cross Site Scripting (XSS) Stored XSS Reflected XSS Cross Site Request Forgery (CSRF) HTTPonly test www.nethemba.com
- 9. Improper Error Handling Fail Open Authentication Scheme www.nethemba.com
- 10. Injection flaws Blind SQL injection Numeric SQL injection String SQL injection XPATH injection www.nethemba.com
- 11. Parameter tampering Exploit Hidden Fields Exploit Unchecked Email Bypass Client Side JavaScript Validation www.nethemba.com
- 12. Session Management Flaws Spoof an Authentication Cookie Hijack a Session Session Fixation Attack www.nethemba.com
- 13. Used tools WebGoat project http://www.owasp.org/index.php/Category:OWASP_WebGoat_P WebScarab http://www.owasp.org/index.php/Category:OWASP_WebScarab Tamperdata http://tamperdata.mozdev.org/ LiveHTTPHeaders http://livehttpheaders.mozdev.org/ Foxy Proxy http://foxyproxy.mozdev.org/ www.nethemba.com
- 14. References New Web Applications Attacks http://www.nethemba.com/new_web_attacksnethe LAMP and PHP security hardening (in Slovak language) http://www.nethemba.com/phpsec.pdf www.nethemba.com
- 15. Thank you for listening! Ing. Pavol Lupták, CISSP, CEH [email protected] www.nethemba.com