Vulnerabilities that manifest when an application integrates user-controllable values into a string that the code interpreter dynamically validates.

Vulnerabilities that manifest when an application integrates user-controllable values into a string that the code interpreter dynamically validates.

• A. Server-side JavaScript injections
• B. log injection attacks
• C. HTML Embedding
• D. LDAP Injection

Answer: (A)

When user input is placed directly into a string that will be executed by the code interpreter on the server, you’re looking at code injection through dynamic evaluation. If the server builds something like a script or a command string from user-provided values and then runs that string, an attacker can craft input that changes the meaning of the code being executed. This leads to arbitrary code execution, access to sensitive data, or other controlled behavior on the server. The vulnerability specifically involves the interpreter executing code that originated in user input, not just mishandling data for display or building a query. That’s why server-side JavaScript injections is the best fit here: it describes injecting and executing code on the server through the language runtime’s dynamic evaluation, such as using eval or similar constructs in a server-side JavaScript environment. The other options describe different kinds of threats—log injection, HTML embedding, or LDAP injection—that don’t involve introducing and executing arbitrary code within the server’s runtime. To prevent this, avoid dynamic evaluation of user input, validate and sanitize inputs, and use safe APIs that don’t execute user-derived strings.

When user input is placed directly into a string that will be executed by the code interpreter on the server, you’re looking at code injection through dynamic evaluation. If the server builds something like a script or a command string from user-provided values and then runs that string, an attacker can craft input that changes the meaning of the code being executed. This leads to arbitrary code execution, access to sensitive data, or other controlled behavior on the server. The vulnerability specifically involves the interpreter executing code that originated in user input, not just mishandling data for display or building a query.

That’s why server-side JavaScript injections is the best fit here: it describes injecting and executing code on the server through the language runtime’s dynamic evaluation, such as using eval or similar constructs in a server-side JavaScript environment. The other options describe different kinds of threats—log injection, HTML embedding, or LDAP injection—that don’t involve introducing and executing arbitrary code within the server’s runtime. To prevent this, avoid dynamic evaluation of user input, validate and sanitize inputs, and use safe APIs that don’t execute user-derived strings.