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Web application security

Kort om utbildningen
5 dagar
29 400 SEK Momsfri


Your web application works as intended, so you are done, right? But did you consider feeding in incorrect values? 16 Gbs of data? A null? An apostrophe? Negative numbers, or specifically -1 or -231? 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 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.

Ses­sion 1
Cyber security basics
What is security?
Threat and risk
Cyber security 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 – Using prepared statements, Case study – Hacking Fortnite accounts

Ses­sion 2
The OWASP Top Ten
A1 - Injection (continued)

Code injection
OS command injection: OS command injection best practices, Case study – Shellshock, Lab - Shellshock, Case study – Command injection via ping

A2 - Broken Authentication

Authentication basics
Multi-factor authentication
Authentication weaknesses - spoofing
Spoofing on the Web
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 – Is just hashing passwords 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, Lab – Applying a password policy, Password change, Forgotten passwords, Lab – Password reset weakness, Case study – The Ashley Madison data breach, The dictionary attack, The ultimate crack, Exploitation and the lessons learned, Password database migration, (Mis)handling passwords

Ses­sion 3
The OWASP Top Ten
A2 - Broken Authentication (continued)

Session management: Session management essentials, Session ID best practices, Why do we protect session IDs – Session hijacking, Session fixation, Cross-site Request Forgery (CSRF) (Lab – Cross-site Request Forgery, CSRF best practices, CSRF defense in depth,  Lab – CSRF protection with tokens)
Cookie security: Cookie security best practices, Cookie attributes

A3 - Sensitive Data Exposure

Information exposure
Exposure through extracted data and aggregation
Case study – Strava data exposure
System information leakage: Leaking system information
Information exposure best practices

A4 - XML External Entities (XXE)

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, Lab – Prohibiting DTD expansion

A5 - Broken Access Control

Access control basics
Failure to restrict URL access
Lab – Failure to restrict URL access
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)
File upload: Unrestricted file upload, Good practices, Lab – Unrestricted file upload

A6 - Security Misconfiguration

Configuration principles
Configuration management
Server misconfiguration

Ses­sion 4
The OWASP Top Ten
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, Case study – XSS in Fortnite accounts
XSS protection best practices
o Protection principles - escaping: Lab – XSS fix / stored, Lab – XSS fix / reflected, Additional protection layers, Client-side protection principles

A8 - Insecure Deserialization

Serialization and deserialization challenges
Deserializing untrusted streams
Deserialization best practices
Lab – Creating a POP payload
Lab – Using the POP payload

A9 - Using Components with Known Vulnerabilities

Using vulnerable components
Assessing the environment
Untrusted functionality import
Importing JavaScript
Case study – The British Airways data breach
Vulnerability management: Patch management, Vulnerability management, Vulnerability databases

A10 - Insufficient Logging & Monitoring

Logging and monitoring principles
Insufficient logging
Case study – Plaintext passwords at Facebook
Logging best practices

XML security
XML validation
XML injection

Lab – XML injection
XPath injection
Blind XPath injection

XML signature

XML signature wrapping
Case study – signature wrapping in single sign-on solutions

JSON security
JSON injection
Dangers of JSONP
JSON/JavaScript hijacking
Best practices
Case study – ReactJS vulnerability in HackerOne
Ses­sion 5
The OWASP Top Ten
Web application security beyond the Top Ten

Client-side security
Lab – Client-side security
Same Origin Policy: Relaxing the Same Origin Policy, Relaxing with Cross-Origin Resource Sharing (CORS), Simple request, Preflight request, 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
Some further best practices: HTML5 security best practices, CSS security best practices, Ajax security best practices

Denial of service
Denial of Service
Resource exhaustion
Cash overflow
Sustained client engagement
Infinite loop
Algorithm complexity issues

Regular expression denial of service (ReDoS): Dealing with ReDoS, Hashtable collision (How hashtables work?, Hash collision in case of hashtables)

Security testing
Security testing techniques and tools

Code analysis: Security aspects of code review, Static Application Security Testing (SAST)
Dynamic analysis: Security testing at runtime, Penetration testing, Stress testing, Dynamic analysis tools (Dynamic Application Security Testing (DAST), Web vulnerability scanners, SQL injection tools, Proxy servers)

Wrap up
Secure coding principles

Principles of robust programming by Matt Bishop
Secure design principles of Saltzer and Schröder

And now what?

Software security sources and further reading

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