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1 4.0 Testing Guide Project Leaders: Matteo Meucci and Andrew Muller Creative C

1 4.0 Testing Guide Project Leaders: Matteo Meucci and Andrew Muller Creative Commons (CC) Attribution Share-Alike Free version at http:/ /www.owasp.org 2 The Open Web Application Security Project (OWASP) is a worldwide free and open com- munity focused on improving the security of application software. Our mission is to make application security “visible” , so that people and organizations can make informed decisions about application security risks. Every one is free to participate in OWASP and all of our materials are available under a free and open software license. The OWASP Foundation is a 501c3 not-for-profit charitable organization that ensures the ongoing availability and support for our work. THE ICONS BELOW REPRESENT WHAT OTHER VERSIONS ARE AVAILABLE IN PRINT FOR THIS BOOK TITLE. ALPHA: “Alpha Quality” book content is a working draft. Content is very rough and in development until the next level of publishing. BETA: “Beta Quality” book content is the next highest level. Content is still in development until the next publishing. RELEASE: “Release Quality” book content is the highest level of quality in a book title’s lifecycle, and is a final product. To Share - to copy, distribute and transmit the work Attribution. You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under the same, similar or a compatible license. To Remix - to adapt the work YOU ARE FREE: UNDER THE FOLLOWING CONDITIONS: ALPHA BETA RELEASE 1 The problem of insecure software is perhaps the most important technical challenge of our time. The dramatic rise of web applications enabling business, social networking etc has only compounded the requirements to establish a robust approach to writing and securing our Internet, Web Applications and Data. 0 Testing Guide Foreword Testing Guide Foreword - By Eoin Keary Foreword by Eoin Keary, OWASP Global Board The problem of insecure software is perhaps the most important technical challenge of our time. The dramatic rise of web appli- cations enabling business, social networking etc has only com- pounded the requirements to establish a robust approach to writ- ing and securing our Internet, Web Applications and Data. At The Open Web Application Security Project (OWASP), we’re trying to make the world a place where insecure software is the anomaly, not the norm. The OWASP Testing Guide has an import- ant role to play in solving this serious issue. It is vitally important that our approach to testing software for security issues is based on the principles of engineering and science. We need a consis- tent, repeatable and defined approach to testing web applications. A world without some minimal standards in terms of engineering and technology is a world in chaos. It goes without saying that you can’t build a secure application without performing security testing on it. Testing is part of a wider approach to building a secure system. Many software develop- ment organizations do not include security testing as part of their standard software development process. What is even worse is that many security vendors deliver testing with varying degrees of quality and rigor. Security testing, by itself, isn’t a particularly good stand alone measure of how secure an application is, because there are an in- finite number of ways that an attacker might be able to make an application break, and it simply isn’t possible to test them all. We can’t hack ourselves secure and we only have a limited time to test and defend where an attacker does not have such constraints. In conjunction with other OWASP projects such as the Code review Guide, the Development Guide and tools such as OWASP ZAP, this is a great start towards building and maintaining secure applica- tions. The Development Guide will show your project how to archi- tect and build a secure application, the Code Review Guide will tell you how to verify the security of your application’s source code, and this Testing Guide will show you how to verify the security of your running application. I highly recommend using these guides as part of your application security initiatives. Why OWASP? Creating a guide like this is a huge undertaking, requiring the ex- pertise of hundreds of people around the world. There are many different ways to test for security flaws and this guide captures the consensus of the leading experts on how to perform this test- ing quickly, accurately, and efficiently. OWASP gives like minded security folks the ability to work together and form a leading prac- tice approach to a security problem. The importance of having this guide available in a completely free and open way is important for the foundations mission. It gives anyone the ability to understand the techniques used to test for common security issues. Security should not be a black art or closed secret that only a few can practice. It should be open to all and not exclusive to security practitioners but also QA, Developers 2 Testing Guide Foreword - By Eoin Keary and Technical Managers. The project to build this guide keeps this expertise in the hands of the people who need it - you, me and anyone that is involved in building software. This guide must make its way into the hands of developers and software testers. There are not nearly enough application security experts in the world to make any significant dent in the overall problem. The initial responsibility for application security must fall on the shoulders of the developers, they write the code. It shouldn’t be a surprise that developers aren’t producing secure code if they’re not testing for it or consider the types of bugs which introduce vulnerability. Keeping this information up to date is a critical aspect of this guide project. By adopting the wiki approach, the OWASP community can evolve and expand the information in this guide to keep pace with the fast moving application security threat landscape. This Guide is a great testament to the passion and energy our members and project volunteers have for this subject. It shall cer- tainly help change the world a line of code at a time. Tailoring and Prioritizing You should adopt this guide in your organization. You may need to tailor the information to match your organization’s technologies, processes, and organizational structure. In general there are several different roles within organizations that may use this guide: • Developers should use this guide to ensure that they are produc- ing secure code. These tests should be a part of normal code and unit testing procedures. • Software testers and QA should use this guide to expand the set of test cases they apply to applications. Catching these vulnerabil- ities early saves considerable time and effort later. • Security specialists should use this guide in combination with other techniques as one way to verify that no security holes have been missed in an application. • Project Managers should consider the reason this guide exists and that security issues are manifested via bugs in code and de- sign. The most important thing to remember when performing security testing is to continuously re-prioritize. There are an infinite num- ber of possible ways that an application could fail, and organiza- tions always have limited testing time and resources. Be sure time and resources are spent wisely. Try to focus on the security holes that are a real risk to your business. Try to contextualize risk in terms of the application and its use cases. This guide is best viewed as a set of techniques that you can use to find different types of security holes. But not all the techniques are equally important. Try to avoid using the guide as a checklist, new vulnerabilities are always manifesting and no guide can be an exhaustive list of “things to test for” , but rather a great place to start. The Role of Automated Tools There are a number of companies selling automated security anal- ysis and testing tools. Remember the limitations of these tools so that you can use them for what they’re good at. As Michael Howard put it at the 2006 OWASP AppSec Conference in Seattle, “Tools do not make software secure! They help scale the process and help enforce policy.” Most importantly, these tools are generic - meaning that they are not designed for your custom code, but for applications in general. That means that while they can find some generic problems, they do not have enough knowledge of your application to allow them to detect most flaws. In my experience, the most serious security issues are the ones that are not generic, but deeply intertwined in your business logic and custom application design. These tools can also be seductive, since they do find lots of poten- tial issues. While running the tools doesn’t take much time, each one of the potential problems uploads/S4/ owasp-testing-guide-v4.pdf