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Web application security in Java and C#

CYDJvCsWeb4d
4 days
On-site or online
Hands-on
C#
Java
Developer
Instructor-led
Pricing Inquiry Download PDF
labs

31 Labs

case_study

16 Case Studies

Platform

Web

Audience

Java and C# developers working on Web applications

Preparedness

General Java, C# and Web development

Standards and references

OWASP, SEI CERT, CWE and Fortify Taxonomy

Group size

12 participants

Outline

  • Cyber security basics
  • The OWASP Top Ten 2021
  • Wrap up

What you will learn

  • Getting familiar with essential cyber security concepts
  • Understanding how cryptography supports security
  • Learning how to use cryptographic APIs correctly in Java and C#
  • Understanding Web application security issues
  • Detailed analysis of the OWASP Top Ten elements
  • Putting Web application security in the context of Java and C#
  • Going beyond the low hanging fruits
  • Input validation approaches and principles
  • Managing vulnerabilities in third party components

Description

Your application written in Java and C# works as intended, so you are done, right? But did you consider feeding in incorrect values? 16Gbs of data? A null? An apostrophe? Negative numbers, or specifically -1 or -2^31? Because that’s what the bad guys will do – and the list is far from complete.

Handling security needs a healthy level of paranoia, and this is what this course provides: a strong emotional engagement by lots of hands-on labs and stories from real life, all to substantially improve code hygiene. Mistakes, consequences, and best practices are our blood, sweat and tears.

The curriculum goes through the common Web application security issues following the OWASP Top Ten but goes far beyond it both in coverage and the details.All this is put in the context of the discussed programming languages, and extended by core programming issues, discussing security pitfalls of the used frameworks.

So that you are prepared for the forces of the dark side.

So that nothing unexpected happens.

Nothing.

They said about us

”

Protect your data, not your code

The class did not only discuss the whole idea of security but is also helpful in planning the whole system together with how people would create applications from scratch. Pretty much useful since a lot of developers who start a project do not focus on security in the architecture phase but just specifications. Very useful in the long run.

Employee at a Global Insurance Group , May, 2019

Manila, The Philippines

Table of contents

  • Cyber security basics
  • The OWASP Top Ten 2021
    • A01 – Broken Access Control
      • Access control basics
      • Failure to restrict URL access
      • Confused deputy
        • Insecure direct object reference (IDOR)
        • Path traversal
        • Lab – Insecure Direct Object Reference
        • Path traversal best practices
        • Authorization bypass through user-controlled keys
        • Case study – Authorization bypass on Facebook
        • Lab – Horizontal authorization
      • File upload
        • Unrestricted file upload
        • Good practices
        • Lab – Unrestricted file upload
      • Open redirects and forwards
        • Case study – Hacking Fortnite accounts
        • Case study – Unvalidated redirect at Epic Games
        • Open redirects and forwards – best practices
      • Cross-site Request Forgery (CSRF)
        • Lab – Cross-site Request Forgery
        • CSRF best practices
        • CSRF defense in depth
        • Lab – CSRF protection with tokens
    • A02 – Cryptographic Failures
      • Information exposure
        • Exposure through extracted data and aggregation
        • Case study – Strava data exposure
        • System information leakage
          • Leaking system information
        • Information exposure best practices
      • Cryptography for developers
        • Cryptography basics
        • Java Cryptographic Architecture (JCA) in brief
        • Crypto APIs in C#
        • Elementary algorithms
          • Random number generation
            • Pseudo random number generators (PRNGs)
            • Cryptographically secure PRNGs
            • Weak and strong PRNGs in Java
            • Weak and strong PRNGs in C#
            • Using random numbers in C#
            • Lab – Using random numbers
            • Case study – Equifax credit account freeze
          • Hashing
            • Hashing basics
            • Hashing in Java
            • Hashing in C#
            • Lab – Hashing
  • The OWASP Top Ten 2021
    • A02 – Cryptographic Failures (continued)
      • Cryptography for developers
        • Confidentiality protection (continued)
          • Confidentiality protection
          • Symmetric encryption
            • Block ciphers
            • Modes of operation
            • Modes of operation and IV – best practices
            • Symmetric encryption in Java
            • Symmetric encryption in Java with streams
            • Symmetric encryption in C#
            • Symmetric encryption in C# with streams
            • Lab – Symmetric encryption
          • Asymmetric encryption
            • The RSA algorithm
              • Using RSA – best practices
              • RSA in Java
              • RSA in C#
          • Combining symmetric and asymmetric algorithms
    • A03 – Injection
      • Injection principles
      • Injection attacks
      • SQL injection
        • SQL injection basics
        • Lab – SQL injection
        • Attack techniques
        • Content-based blind SQL injection
        • Time-based blind SQL injection
        • SQL injection best practices
          • Input validation
          • Parameterized queries
          • Lab – Using prepared statements
          • Database defense in depth
          • Case study – Hacking Fortnite accounts
          • SQL injection protection and ORM
      • Parameter manipulation
        • CRLF injection
        • HTTP header manipulation
          • HTTP response splitting
          • Header checking in ASP.NET
        • HTTP parameter manipulation
          • HTTP parameter pollution
          • Value shadowing
          • Variable shadowing in Java
          • Value shadowing in C#
      • Code injection
        • OS command injection
          • Lab – Command injection
          • OS command injection best practices
          • Using Runtime.exec() in Java
          • Using ProcessBuilder in Java
          • Case study – Command injection via ping
      • HTML injection – Cross-site scripting (XSS)
        • Cross-site scripting basics
        • Cross-site scripting types
          • Persistent cross-site scripting
          • Reflected cross-site scripting
          • Client-side (DOM-based) cross-site scripting
        • Lab – Stored XSS
        • Lab – Reflected XSS
        • Case study – XSS in Fortnite accounts
        • XSS protection best practices
          • Protection principles – escaping
          • XSS protection APIs in Java
          • XSS protection APIs in C#
          • Request validation in ASP.NET
          • Further XSS protection techniques in C#
          • Lab – XSS fix / stored
          • Lab – XSS fix / reflected
          • Client-side protection principles
          • Additional protection layers – defense in depth
  • The OWASP Top Ten 2021
    • A03 – Injection (continued)
      • Input validation
        • Input validation principles
        • Denylists and allowlists
        • What to validate – the attack surface
        • Where to validate – defense in depth
        • When to validate – validation vs transformations
        • Validation with regex
        • Regular expression denial of service (ReDoS)
        • Lab – ReDoS
        • Dealing with ReDoS
      • Unsafe reflection
        • Reflection without validation
        • Lab – Unsafe reflection
    • A04 – Insecure Design
      • The STRIDE model of threats
      • Secure design principles of Saltzer and Schroeder
        • Economy of mechanism
        • Fail-safe defaults
        • Complete mediation
        • Open design
        • Separation of privilege
        • Least privilege
        • Least common mechanism
        • Psychological acceptability
      • Client-side security
        • Same Origin Policy
          • Simple request
          • Preflight request
          • Cross-Origin Resource Sharing (CORS)
        • Frame sandboxing
          • Cross-Frame Scripting (XFS) attacks
          • Lab – Clickjacking
          • Clickjacking beyond hijacking a click
          • Clickjacking protection best practices
          • Lab – Using CSP to prevent clickjacking
    • A05 – Security Misconfiguration
      • Configuration principles
      • Server misconfiguration
      • ASP.NET configuration best practices
        • ASP.NET configuration
      • Cookie security
        • Cookie attributes
      • XML entities
        • DTD and the entities
        • Entity expansion
        • External Entity Attack (XXE)
          • File inclusion with external entities
          • Server-Side Request Forgery with external entities
          • Lab – External entity attack
          • Case study – XXE vulnerability in SAP Store
          • Preventing XXE in Java
          • Preventing XXE in C#
          • Lab – Prohibiting DTD
    • A06 – Vulnerable and Outdated Components
      • Using vulnerable components
      • Assessing the environment
      • Hardening
      • Untrusted functionality import
      • Vulnerability management
  • The OWASP Top Ten 2021
    • A07 – Identification and Authentication Failures
      • Authentication
        • Authentication basics
        • Multi-factor authentication (MFA)
        • Case study – PayPal 2FA bypass
      • Session management
        • Session management essentials
        • Why do we protect session IDs – Session hijacking
        • Session fixation
      • Password management
    • A08 – Software and Data Integrity Failures
      • Integrity protection
        • Message Authentication Code (MAC)
          • Calculating MAC in Java
          • Calculating HMAC in C#
          • Lab – Calculating MAC
        • Digital signature
          • Digital signature with RSA
          • Elliptic Curve Cryptography
            • ECC basics
            • Digital signature with ECC
          • Digital signature in Java
          • Digital signature in C#
            • Lab – Digital signature with ECDSA
      • Subresource integrity
        • Importing JavaScript
        • Lab – Importing JavaScript
        • Case study – The British Airways data breach
      • Insecure deserialization
        • Serialization and deserialization challenges
        • Integrity – deserializing untrusted streams
        • Integrity – deserialization best practices
        • Look ahead deserialization in Java
        • Look ahead deserialization in C#
        • Property Oriented Programming (POP)
          • Creating a POP payload in C#
          • Lab – Creating a POP payload
          • Lab – Using the POP payload
          • Summary – POP best practices
    • A09 – Security Logging and Monitoring Failures
      • Logging and monitoring principles
      • Insufficient logging
      • Case study – Plaintext passwords at Facebook
      • Log forging
      • Log forging – best practices
      • Case study – Log interpolation in log4j
      • Case study – The Log4Shell vulnerability (CVE-2021-44228)
      • Case study – Log4Shell follow-ups (CVE-2021-45046, CVE-2021-45105)
      • Logging best practices
      • Monitoring best practices
    • A10 – Server-side Request Forgery (SSRF)
      • Server-side Request Forgery (SSRF)
      • Case study – SSRF and the Capital One breach
  • Wrap up
    • Secure coding principles
      • Principles of robust programming by Matt Bishop
    • And now what?
      • Software security sources and further reading
      • Java resources
      • .NET and C# resources

Pricing

4 days Session Price

3000 EUR / person

  • Live, instructor led classroom training
  • Discussion and insight into the hacker’s mindset
  • Hands-on practice using case studies based on high-profile hacks and live lab exercises
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