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Web Application Security 101 - 13 Business Logic
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Web Application Security 101 - 13 Business Logic

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In part 13 of Web Application Security 101 we cover various business logic security vulnerabilities that effect modern web applications.

In part 13 of Web Application Security 101 we cover various business logic security vulnerabilities that effect modern web applications.

Published in: Software

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Transcript

  • 1. Business Logic Vulnerabilities in application-specific features.
  • 2. Examples Rounding Errors Number Conversions
  • 3. Rounding Errors You can see how the type-less systems such as those found in Python, Ruby, Perl, JavaScript and other could result into a rounding error. print 4000/5000 print 4000.0/5000 print round(4000/5000) print round(4000.0/5000)
  • 4. Number Conversions Small numbers can be represented in more than one way. print 0.0005 print 5e-4
  • 5. Lab Let's discover some business logic flaws.