Copyright © The OWASP Foundation Permission is granted to copy, distribute and/or modify this document under the terms of the OWASP License. The OWASP Foundation OWASP Secure Code Review: Enterprise Metrics Richard Tychansky Lockheed Martin Corporation 11/10/2010

OWASP 2 Agenda  Software Development Life Cycles  Enterprise Elements for Secure Development  Application Security Standards  Secure Code Review Metrics  Metrics by SDLC Phase (General Model)  Implementing the Framework

OWASP Software Development Life Cycles  Each SDLC model has its own benefits depending upon your organizational needs.  Agile  Waterfall  Iterative  Vee Model  Incremental and Iterative Development  Microsoft Security Development Lifecycle (SDL)  Ultimately, to develop secure software you need to follow a repeatable and continuously improving software engineering process.  Security needs to be integrated and measured at each SDLC phase. 3

OWASP Enterprise Elements for Secure Development  Management Support  Developer Training  Professional Career Development  Technical Vulnerability Management Program  Integration of Security Standards into the SDLC  Security Metrics Program 4

OWASP 5

Application Security Standards  OWASP Application Security Verification Standard  Level 1 Automated Verification  Level 1A – Dynamic Scan  Level 1B – Source Code Scan  Level 2 Manual Verification  Level 2A – Penetration Test  Level 2B – Code Review  Level 3 Design Verification – threat modeling  Level 4 Internal Verification – examine how security works – look for malicious code  NSA Guidance for Addressing Malicious Code Risk  DISA STIG Application Security and Development  Use a standard which is development life cycle independent and vendor agnostic.  Maintain the principles of the SDLC model you are using and integrate security at each phase. 6

OWASP 7

Secure Code Review Metrics  Decided what to measure  Set the minimum benchmark  Define reporting requirements to Management, and customers.  Use a hybrid approach to integrating standards into your SDLC model of choice.  Map metrics to ASVS level completion and security testing and monitoring programs. 8

OWASP Metrics by SDLC Phase (General Model) SDLC PhaseSecure Code Metric Requirements Percentage of security requirements given in project specifications. Percentage of security requirements subject to cost/benefit, and risk analysis. Percentage of security requirements which are considered in threat models. Design Percentage of design components subjected to attack surface analysis. Percentage of security controls that are covered by security design patterns. Percentage of security controls which pose an architectural risk. Implementation (Coding) Percentage of application components subject to manual and/or automated source code review. Percentage of code deficiencies detected during peer reviews. Percentage of application components subject to code integrity/signing procedures. Verification (Testing) Percentage of common weaknesses and exposures detected per requirement specification. Percentage of security controls within the application that met the required specification for software assurance. 9 Reference: Allen, J.(2009)

OWASP Implementing the Framework  COTS vs internal development web application security metrics.  Security in source code begins with requirements, then design, and test (i.e., throughout the SDLC)  Align source code vulnerability metrics to OWASP Top Ten “design flaw categories”.  Security design flaw metrics captured for:  Source code design  Insecure field scope  Insecure method scope  Insecure class modifiers  Unused external references  Redundant code 10

OWASP Conclusions  Consensus building across multiple business areas is not easy  Training all developers is elusive  Centralizing source code analysis is problematic  Finding the right reporting metrics for Senior Management is critical to project success 11

OWASP References  Allen, J., (2009). Measuring Software Security. Software Engineering Institute, Carnegie Melon University  Application Security and Development STIG Version 3 Release 2. DISA zip zip  Fundamental Practices for Secure Software Development. Software Assurance Forum for Excellence in Code (SAFECode)  NSA Guidance for Addressing Malicious Code Risk.  OWASP Application Security Verification Standard Project. roject roject  OWASP Security Code Review in the SDLC.  OWASP Top Ten Project.  Resources for Developers. Software Engineering Institute, Carnegie Melon University  Software Assurance: An Overview of Current Industry Best Practices. Software Assurance Forum for Excellence in Code (SAFECode)

OWASP Discussion Question  Tell me about security metrics in your organization. 13