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Question

Difficulty: EasyApplication and Software Vulnerabilities

A system administrator is reviewing web application event logs and discovers multiple database syntax errors generated by user input containing payload strings such as `' OR '1'='1`. Which of the following application vulnerabilities is the attacker attempting to exploit?

  1. SQL injectionAnswer
  2. B
    Cross-site scripting (XSS)
  3. C
    Broken object level authorization
  4. D
    Buffer overflow

Answer

SQL injection is the vulnerability being targeted.
SQL injection occurs when untrusted input is passed directly into a database query engine without adequate input validation or parameterization. The input payload `' OR '1'='1` forces a SQL boolean condition to always evaluate as true, manipulating the expected query execution flow.

Step-by-Step Solution

1
Analyze the log entries provided in the scenario.
Identify database syntax errors caused by input string `' OR '1'='1`.
Recognizing database command manipulation patterns in user inputs helps identify web application attacks.
2
Determine which application vulnerability allows database syntax execution.
SQL injection occurs when user input fields accept unsanitized SQL commands.
Unsanitized user inputs passed directly into database queries allow attackers to manipulate standard SQL logic.

Key Concept

SQL Injection Identification
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Topics

Application and Software Vulnerabilities

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