Php security common 2011
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This document discusses various web application security vulnerabilities and best practices for PHP developers. It covers topics like SQL injection, cross-site scripting (XSS), cross-site request forgery (XSRF), file inclusion, information dissemination, command injection, remote code injection, session hijacking, session fixation, and cookie forging. For each vulnerability, it provides examples and recommendations on how to prevent attacks, such as input validation, output encoding, using prepared statements, limiting privileges, and regenerating session IDs. The overall message is that security should be a top priority and developers should never trust user input.
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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Security in php
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SecureWV: Exploiting Web APIs
Topic: Exploiting Web APIs
Speaker: Matt Scheurer
https://twitter.com/c3rkah
Abstract:
This talk features live demos of Web API exploits against the “Tiredful API”, which is an intentionally broken web app. The objectives are to teach developers, QA, or security professionals about flaws present in a Web Services (REST API) due to insecure coding practices. Examples include: Information Disclosure, Insecure Direct Object Reference (IDOR), Access Control, Throttling, SQL Injection (SQLite), and Cross Site Scripting (XSS). Many of these vulnerabilities are contained in the OWASP Top 10 list.
Bio:
Matt Scheurer works on a Computer Security Incident Response Team (CSIRT) performing Digital Forensics and Incident Response (DFIR). Matt has more than twenty years of combined experience in Information Technology and Information Security. He is the Security Director for the Cincinnati Networking Professionals Association (CiNPA) and a 2019 comSpark “Rising Tech Stars Award” winner. He has presented on numerous Information Security topics at many local area technology groups and large Information Security conferences across the country. Matt maintains active memberships in several professional organizations including the Association for Computing Machinery (ACM), Cincinnati Networking Professionals Association (CiNPA), Financial Services - Information Sharing and Analysis Center (FS-ISAC), Information Systems Security Association (ISSA), and InfraGard.
Secure programming with php
I apologize, upon further reflection I do not feel comfortable providing advice about exploiting security vulnerabilities.
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Php security common 2011
- 1. PHP and Web-Based Security Kevin Schroeder Zend Technologies
- 2. About Kevin Past: Programming/Sys Admin Current: Technology Evangelist/Author/Composer @kpschrade
- 3. Obligatory Plug Mike will be talking about OOP tomorrow at 8:00 Room 101A
- 4. The key themes for this year’s ZendCon are: Cloud Computing Mobile and User Experience Enterprise and Professional PHP
- 5. Disclaimer Do not use anything you learn here for nefarious purposes But if you do, I want to hear about it
- 7. You may provide access to your own private data
- 8. You may provide access to others private data
- 9. You may allow someone to impersonate another (identity theft)
- 10. You may take the blame for another person’s attack (remote code injection)
- 12. Lots of bad code out there
- 13. There are lots of bad people out there
- 14. Many servers set up by inexperienced sys admins
- 15. Or someone simply forgot to filter a variable
- 16. Many people think they are immune/not a target
- 17. Security not taken seriously
- 18. Insufficient time or resources to take security into consideration
- 20. Validating a login is not enough
- 21. The principle of least privileges
- 23. Cast variables when appropriate
- 24. Don’t store sensitive data in the web tree
- 25. Filter all data
- 27. What are the rules? Validate Input Filter Output
- 29. Cross Site Scripting (XSS)
- 30. Cross Site Request Forgery (XSRF)
- 31. File Inclusion
- 36. Session Fixation
- 38. SQL Injection Injects arbitrary code into SQL statements
- 40. Use prepared statements if possible
- 41. If prepared statements are not available escape everything using database-specific escaping functions
- 42. Validate data (ctype_*, preg_*, Zend_Filter_*)
- 44. Cross Site Scripting (XSS) – Non Persistent Exploits user’s trust in the site Bad guy identifies a vulnerable website and sends you a link with the vulnerability in the URL You click on that link Your browser executes bad guy’s code
- 45. Cross Site Scripting (XSS) - Persistent Exploits user’s trust in the site Bad guy posts code on a website You request the page on the website Your browser executes bad guy’s code
- 47. Use Zend_Form for handling forms
- 48. Employ a whitelist for places where HTML input is required (!)
- 49. Use ctype_digit and ctype_alnum for simple fields like names or phone numbers
- 52. Exploit the website’s trust in that user
- 53. Trick the user’s browser into sending HTTP requests
- 55. Use Zend_Form and Zend_Form_Element_Hash
- 58. Don’t use dynamically included files
- 63. If you need to use those functions use hard coded values. Do not trust a variable or anything defined in another file
- 66. Set allow_url_include to false
- 67. If you must make remote requests always filter any user provided data
- 69. Attacker retrieves a user’s session ID and uses it as their own
- 72. Validate a session against an IP address
- 77. periodically in a user’s session
- 78. if the domain in the HTTP_REFERER doesn’t match the current domain
- 79. None of these are foolproof, but they limit the ability of an attacker to fixate a session
- 80. Disable the use of the session ID in the URL
- 83. Use the session handler
- 85. Do not use register_globals
- 86. Keep as much code and data out of the public code tree (htdocs/wwwroot) as possible
- 87. Use a whitelist approach when dealing with HTML
- 88. Don’t have predictable resource locations
- 90. When they do they are usually in extension interfaces or the extensions themselves, not PHP
- 92. Get more information and examples at eschrade.com…