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Hybrid Security Assessment Methodology for Web Applications

Computer Modeling in Engineering & Sciences 2021年第1期126卷 89-124页

作者： Roddy A.Correa Juan Ramon Bermejo Higuera Javier Bermejo Higuera Juan Antonio SiciliaMontalvo Manuel Sanchez Rubio A.Alberto Magrenan Universidad Tecnica Particular de Loja San Cayetano AltoLojaEcuador Escuela Superior de Ingenieria y Tecnologia Universidad Internacional de La RiojaLogrono26006Spain Universidad de la Rioja Logrono26006Spain

This study presents a methodology to evaluate and prevent security vulnerabilities issues for web applications.The analysis process is based on the use of techniques and tools that allow to perform security assessments of white box and black box,to carry out the security validation of a web application in an agile and precise way.The objective of the methodology is to take advantage of the synergies of semi-automatic static and dynamic security analysis tools and manual checks.Each one of the phases contemplated in the methodology is supported by security analysis tools of different degrees of coverage,so that the results generated in one phase are used as feed for the following phases in order to get an optimized global security analysis result.The methodology can be used as part of other more general methodologies that do not cover how to use static and dynamic analysis tools in the implementation and testing phases of a Secure Software Development Life Cycle(SSDLC).A practical application of the methodology to analyze the security of a real web application demonstrates its effectiveness by obtaining a better optimized vulnerability detection result against the true and false positive metrics.Dynamic analysis with manual checking is used to audit the results,24.6 per cent of security vulnerabilities reported by the static analysis has been checked and it allows to study which vulnerabilities can be directly exploited externally.This phase is very important because it permits that each reported vulnerability can be checked by a dynamic second tool to confirm whether a vulnerability is true or false positive and it allows to study which vulnerabilities can be directly exploited externally.Dynamic analysis finds six(6)additional critical vulnerabilities.Access control analysis finds other five(5)important vulnerabilities such as Insufficient Protected Passwords or Weak Password Policy and Excessive Authentication Attacks,two vulnerabilities that permit brute force attacks.

关键词： Web applications security vulnerability weakness security analysis white box black box interactive application security testing static application security testing dynamic application security testing

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