Injection Challenges
Injection flaws occur when untrusted data is sent to an interpreter as part of a command or query. SQL, NoSQL, OS, and LDAP injection are common attack vectors.
Bypass a login form by exploiting SQL injection. Learn the basics of how unsanitized input can manipulate database queries.
- Points: 100
- Estimated Time: 15 minutes
- Skills: Basic SQL, Authentication bypass
Use a UNION-based SQL injection to extract hidden data from the database. Learn how attackers can read from tables not exposed by the application.
- Points: 150
- Estimated Time: 20 minutes
- Skills: UNION SELECT, Database enumeration
Exploit a NoSQL database by injecting query operators. Learn how MongoDB-style operator injection differs from traditional SQL injection.
- Points: 150
- Estimated Time: 20 minutes
- Skills: NoSQL operators, JSON injection
Learning Resources
What is SQL Injection?
SQL injection is a code injection technique that exploits security vulnerabilities in an application's database layer. It occurs when user input is incorrectly filtered or not strongly typed and unexpectedly executed.
Prevention Techniques
- Parameterized Queries: Use prepared statements with bound parameters
- Input Validation: Validate and sanitize all user input
- Least Privilege: Database accounts should have minimal permissions
- WAF: Web Application Firewalls can detect and block SQL injection attempts
What is NoSQL Injection?
NoSQL injection targets NoSQL databases like MongoDB, CouchDB, and Redis. Instead of manipulating SQL syntax, attackers inject operators or modify JSON/BSON query structures to bypass authentication or access unauthorized data.