Building Secure Software: How to Avoid Security Problems the Right Way
Editorial Reviews
Book Description
A book is a machine to think with." --I.A. Richards PRINCIPLES OF LITERARY CRITICISM This book exists to help people involved in the software development process learn the principles necessary for building secure software. The book is intended for anyone involved in software development, from managers to coders, although it contains the low-level detail that is most applicable to programmers. Specific code examples and technical details are presented in the second part of the book. The first part is more general and is intended to set an appropriate context for building secure software by introducing security goals, security technologies, and the concept of software risk management. There are plenty of technical books that deal with computer security, but until now, none have applied significant effort to the topic of developing secure programs. If you want to learn how to set up a firewall, lock down a single host, or build a virtual private network, there are other resources to which to turn outside this book. Because most security books are intended to address the pressing concerns of network-level security practitioners, they tend to focus on how to promote secrecy and how to protect networked resources in a world in which software is chronically broken. Unfortunately, many security practitioners have gotten used to a world in which having security problems in software is common, and even acceptable. Some people even assume that it is too hard to get developers to build secure software, so they don't raise the issue. Instead, they focus their efforts on "best-practice" network security solutions, erecting firewalls, and trying to detect intrusions and patch known security problems in a timely manner. We are optimistic that the problem of bad software security can be addressed. The truth is, writing programs that have no security flaws in them is difficult. However, we assert that writing a "secure-enough" program is much easier than writing a completely bug-free program. Should people give up on removing bugs from software just because it's essentially impossible to eliminate them all? Of course not. By the same token, people shouldn't just automatically throw in the software security towel before they even understand the problem. A little bit of education can go a long way. One of the biggest reasons why so many products have security problems is that many technologists involved in the development process have never learned very much about how to produce secure code. One problem is that until now there have been very few places to turn for good information. A goal of this book is to close the educational gap and to arm software practitioners with the basic techniques necessary to write secure programs. This said, you should not expect to eradicate all security problems in your software simply by reading this book. Claiming that this book provides a silver bullet for security would ignore the realities of how difficult it is to secure computer software. We don't ignore reality--we embrace it, by treating software security as a risk management problem. In the real world, your software will likely never be totally secure. First of all, there is no such thing as 100% security. Most software has security risks that can be exploited. It's a matter of how much money and effort are required to break the system in question. Even if your software is bug free and your servers are protected by firewalls, someone who wants to target you may get an insider to attack you. Or they may perform a "black bag" (break-in) operation. Because security is complicated and is a system-wide property, we not only provide general principles for secure software design, but we also focus on the most common risks, and how to mitigate them. Organization This book is divided into two parts. The first part focuses on the things you should know about software security before you even think about producing code. We focus on how to integrate security into your software engineering practice. Emphasis is placed on methodologies and principles that reduce security risk by getting started early in the development life cycle. Designing security into a system from the beginning is much easier and orders of magnitude cheaper than retrofitting a system for security later. Not only do we focus on requirements and design, we also provide significant emphasis on analyzing the security of a system, which we believe to be a critical skill. The first part of this book should be of general interest to anyone involved in software development at any level, from business-level leadership to developers in the trenches. In the second part, we get our hands dirty with implementation-level issues. Even with a solid architecture, there is plenty of room for security problems to be introduced at development time. We show developers in gory detail how to recognize and to avoid common implementation-level problems such as buffer overflows and race conditions. The second part of the book is intended for those who feel comfortable around code. We purposely cover material that we believe to be of general applicability. That is, unless a topic is security critical, we try to stay away from anything that is dependent on a particular operating system or programming language. For example, we do not discuss POSIX "capabilities" because they are not widely implemented. However, we devote an entire chapter to buffer overflows because they are a problem of extraordinary magnitude, even though a majority of buffer overflows are specific to C and C++. Because our focus is on technologies that are applicable at the broadest levels, there are plenty of worthy technologies that we do not cover, including Kerberos, PAM (pluggable authentication modules), and mobile code sandboxing, to name a few. Many of these technologies merit their own books (although not all of them are adequately covered today). This book's companion Web site, http://www.buildingsecuresoftware.com/, provides links to information sources covering interesting security technologies that we left out. Code Examples Although we cover material that is largely language independent, most of our examples are written in C, mainly because it is so widely used, but also because it is harder to get things right in C than in other languages. Porting our example code to other programming languages is often a matter of finding the right calls or constructs for the target programming language. However, we do include occasional code examples in Python, Java, and Perl, generally in situations in which those languages are significantly different from C. All of the code in this book is available at [a
Book Info
Cuts to the heart of computer security to help you get security right the first time. Your first step toward building more secure software. Provides expert perspectives and techniques to help you ensure the security of essential software.
Building Secure Software: How to Avoid Security Problems the Right Way
Building Secure Software: How to Avoid Security Problems the Right Way,John Viega,Gary McGraw,Addison-Wesley Professional,020172152X,Computer Bks - Languages / Programming,Computer Books: General,Computer Data Security,Computer security,Computer software,Computers,Development,Networking - General,Programming - Software Development,Security - General,Software Design,System design,Computers / Internet / Security
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