Web application security in Python

CYDPyWeb3d
3 days
Python
Web

Platform

Linux, Windows

Preparedness

General Python and Web development

Audience

Python developers working on Web applications

Group size

12 participants

Labs

Hands-on

Outline

  • Cybersecurity basics
  • The OWASP Top Ten
  • Common software security weaknesses
  • JSON security
  • Security testing
  • Wrap up

Objective list

  • Understanding Web application security issues
  • Detailed analysis of the OWASP Top Ten elements
  • Putting Web application security in the context of Python
  • Going beyond the low hanging fruits
  • Handling security challenges in your Python code
  • Identify vulnerabilities and their consequences
  • Learn the security best practices in Python
  • Understanding security testing methodology and approaches
  • Getting familiar with common security testing techniques and tools

Description

Your Web application written in Python 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 -232? 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 hand 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 Java, and extended by core programming issues, discussing security pitfalls of the Java language and framework.

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

So that nothing unexpected happens.

Nothing.

Table of contents

  • Cybersecurity basics
    • What is security?
    • Threat and risk
    • Cybersecurity threat types
    • Consequences of insecure software
    • Constraints and the market
    • The dark side
  • The OWASP Top Ten
    • OWASP Top 10 – 2017
    • A1 – 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
        • Additional considerations
        • Lab – SQL injection best practices
        • Case study – Hacking Fortnite accounts
        • Testing for SQL injection
        • SQL injection and ORM
      • Parameter manipulation
      • CRLF injection
        • Log forging
        • Lab – Log forging
        • Log forging – best practices
        • HTTP response splitting
      • Code injection
        • OS command injection
          • Lab – Command injection
          • OS command injection best practices
          • Command injection best practices
          • Lab – Command injection best practices
          • Case study – Shellshock
          • Lab – Shellshock
          • Case study – Command injection via ping
          • Testing for command injection
        • Script injection
          • Server-side template injection (SSTI)
          • Lab – Template injection
      • Injection best practices
    • A2 – Broken Authentication
      • Authentication basics
      • Authentication weaknesses
      • Spoofing on the Web
      • Testing for weak authentication
      • Case study – PayPal 2FA bypass
      • User interface best practices
      • Lab – On-line password brute forcing
      • Password management
        • Inbound password management
          • Storing account passwords
          • Password in transit
          • Lab – Why is just hashing passwords not enough?
          • Dictionary attacks and brute forcing
          • Salting
          • Adaptive hash functions for password storage
          • Password policy
            • NIST authenticator requirements for memorized secrets
            • Password length
            • Password hardening
            • Using passphrases
            • Password change
            • Forgotten passwords
            • Lab – Password reset weakness
          • The Ashley Madison data breach
            • The dictionary attack
            • The ultimate crack
            • Exploitation and the lessons learned
          • Password database migration
            • (Mis)handling None passwords
            • Testing for password management issues
  • The OWASP Top Ten
    • A2 – Broken Authentication
      • Password management
        • Outbound password management
          • Hard coded passwords
          • Best practices
          • Lab – Hardcoded password
          • Protecting sensitive information in memory
            • Challenges in protecting memory
      • Session management
        • Session management essentials
        • Session ID best practices
        • Why do we protect session IDs – Session hijacking
        • Session fixation
        • Session handling in Flask
        • Testing for session management issues
        • Cross-site Request Forgery (CSRF)
          • Lab – Cross-site Request Forgery
          • CSRF best practices
          • Lab – CSRF protection with tokens
          • Testing for CSRF
        • Cookie security
          • Cookie security best practices
          • Cookie attributes
          • Testing cookie security
    • A3 – Sensitive Data Exposure
      • Information exposure
      • Exposure through extracted data and aggregation
      • Case study – Strava fitness app data exposure
      • System information leakage
        • Leaking system information
      • Information exposure best practices
        • Error and exception handling principles
        • Information exposure through error reporting
        • Information leakage via error pages
        • Lab – Flask information leakage
    • A4 – XML External Entities (XXE)
      • DTD and the entities
      • Entity expansion
      • Lab – Billion laughs attack
      • Attribute blowup
      • 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
        • Lab – Using non-vulnerable parsers
        • Testing for XXE and XML entity-related vulnerabilities
    • A5 – Broken Access Control
      • Access control basics
      • Failure to restrict URL access
      • Lab – Failure to restrict URL access
      • Testing for authorization issues
      • Confused deputy
        • Insecure direct object reference (IDOR)
        • Lab – Insecure Direct Object Reference
        • Authorization bypass through user-controlled keys
        • Case study – Authorization bypass on Facebook
        • Lab – Horizontal authorization
        • Server-side Request Forgery (SSRF)
        • Testing for confused deputy weaknesses
      • File upload
        • Unrestricted file upload
        • Good practices
        • Lab – Unrestricted file upload
        • Testing for file upload vulnerabilities
    • A6 – Security Misconfiguration
      • Configuration principles
      • Configuration management
      • Server misconfiguration
      • Python configuration best practices
        • Configuring Flask
    • A7 – 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 Python
        • XSS protection in Jinja2
        • Lab – XSS fix / stored
        • Lab – XSS fix / reflected
        • Additional protection layers
        • Client-side protection principles
        • Blacklisting-based XSS protection evasion
        • Testing for XSS
  • The OWASP Top Ten
    • A8 – Insecure Deserialization
      • Serialization and deserialization challenges
      • Deserializing untrusted streams
      • Deserialization with pickle
      • Lab – Deserializing with Pickle
      • Deserialization with PyYAML
      • Deserializing best practices
      • Testing for insecure deserialization
    • A9 – Using Components with Known Vulnerabilities
      • Using vulnerable components
      • Assessing the environment
      • Hardening
      • Untrusted functionality import
      • Malicious packages in Python
      • Importing JavaScript
      • Lab – Importing JavaScript
      • Case study – The British Airways data breach
      • Vulnerability management
        • Patch management
        • Vulnerability databases and scanning tools
        • The build process and CI / CD
        • Dependency checking in Python
        • Lab – Detecting vulnerable components
    • A10 – Insufficient Logging & Monitoring
      • Logging and monitoring principles
      • Insufficient logging
      • Plaintext passwords at Facebook
      • Logging best practices
      • Monitoring best practices
    • Web application security beyond the Top Ten
      • Client-side security
      • Same Origin Policy
        • Lab – Same-origin policy demo
        • Tabnabbing
        • Lab – Reverse tabnabbing
      • Frame sandboxing
        • Cross-Frame Scripting (XFS) attack
        • Lab – Clickjacking
        • Clickjacking beyond hijacking a click
        • Clickjacking protection best practices
        • Lab – Using CSP to prevent clickjacking
  • Common software security weaknesses
    • Input validation
      • Input validation principles
        • Blacklists and whitelists
        • Data validation techniques
        • Lab – Input validation
        • What to validate – the attack surface
        • When to validate – validation vs transformations
        • Where to validate – defense in depth
        • Output sanitization
        • Encoding challenges
        • Lab – Encoding challenges
        • Validation with regex
        • Lab – Regular expression denial of service (ReDoS)
  • JSON security
    • JSON injection
    • Dangers of JSONP
    • JSON/JavaScript hijacking
    • Best practices
    • ReactJS vulnerability in HackerOne
  • Security testing
    • Security testing vs functional testing
    • Manual and automated methods
    • Security testing techniques and tools
      • Code analysis
        • Security aspects of code review
        • Static Application Security Testing (SAST)
        • Using static analysis tools
      • Dynamic analysis
        • Security testing at runtime
        • Penetration testing
        • Stress testing
        • Dynamic analysis tools
        • Dynamic Application Security Testing (DAST)
        • Web vulnerability scanners
        • Using web vulnerability scanners
        • SQL injection tools
        • Using SQL injection tools
        • Proxy servers
        • Fuzzing
  • Wrap up
    • Secure coding principles
      • Principles of robust programming by Matt Bishop
      • Secure design principles of Saltzer and Schröder
    • And now what?
      • Further sources and readings
      • Python resources

Pricing

3 days Session Price

2250 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
Customized Course

Tailor a course to your preferences

  • Send us a brief description of your business’s training needs
  • Include your contact information
  • One of our colleagues will be in touch to schedule a free 45 minute pre-training consultation

Inquiry

Interested in the trainings but still have some questions? Curious about how you can customize a training for your team? Send us a message and a team member will be in touch within 24 hours.

This field is required

This field is required

Send us your phone number if you prefer to discuss further on a call

This field is required

This field is required

This field is required

This field is required