Isolating JavaScript in Dynamic Code Environments

Isolating JavaScript in Dynamic Code Environments

ID:39065773

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页数:5页

时间:2019-06-24

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1、IsolatingJavaScriptinDynamicCodeEnvironmentsAntonisKrithinakisEliasAthanasopoulosEvangelosP.MarkatosInstituteofComputerScience,FoundationforResearchandTechnology-Hellas{krithin,elathan,markatos}@ics.forth.grAbstractmodernwebapplicationsarebasedonframeworksthatcom-binemultipleserver

2、-sideandclient-sidetechnologiesforWeanalyzethesourcecodeoffourwell-knownlargewebproducingdynamiccontent.Intheseapplications,isolatingapplications,namelyWordPress,phpBB,phpMyAdminandonetechnologyfromtheotherisnotconsideredatrivialtask.Drupal.Wewanttoquantifytheleveloflanguageintermi

3、x-Forexample,considerascriptwritteninPHP(aserver-sideinginmodernwebapplicationsand,ifpossible,wewantlanguage)whichdynamicallyproducesJavaScriptsourcetocategorizeallcodingidiomsthatinvolveintermixingofcode.Thisisacode-mixingcasewherePHPandJavaScriptJavaScriptwithaserver-sideprogramm

4、inglanguage,likeareintermixed.TheJavaScriptsourcecodestructureisnotPHP.OuranalysisprocessesmorethanhalfofamillionofcompletepriortheexecutionofthePHPscript.LoCsandidentifiesabout1,000scripts.Thesescriptscon-Tothebestofourknowledge,therehasbeennosystem-tain163cases,wherethesourcecodei

5、smixedinawaythataticeffortforidentifyinghowclient-sideandserver-sidelan-ishardtoisolateJavaScriptfromPHP.Wemanuallyinves-guagesintermixtogetherinmodernwebapplicationsandtigateall163scriptsandproceedinaclassificationschemehowhardistoisolatetheonefromtheother.Inthispaperoffivedistinctc

6、lasses.Ouranalysiscanbebeneficialforallwetrytoidentifythelevelofintermixingbetweendiffer-applicationsthatapplyoperationsintheclient-sidepartofaentprogramminglanguagesinwebapplicationsthatenablewebapplication,variousXSSmitigationschemes,aswellasreal-worldwebsites.Moreprecisely,weanal

7、yzethesourcecoderefactoringandoptimizationtools.codeoffourpopularapplications,namelyphpBB,Word-CategoriesandSubjectDescriptorsD.2.3[SoftwareEn-Press,phpMyAdminandDrupal.Ourfindingssuggestthatgineering]:CodingToolsandTechniquesallthesewebapplicationsareexperiencingmixingofPHPGeneralT

8、ermsLanguages,SecurityandJ

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