Top 30 multiple-choice questions (MCQs) only focused on the File Upload and Download Vulnerabilities on Data Stores in WEB Security covering below topics,along with their answers and explanations.
• Discussing risks associated with file uploads and downloads.
• Explaining how attackers might exploit vulnerabilities in file handling processes.
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1. What is a key risk associated with allowing unrestricted file uploads on a web application?
- Enhanced user experience
- Potential remote code execution
- Improved server performance
- Increased data availability
Allowing unrestricted file uploads can pose a risk of potential remote code execution, enabling attackers to execute malicious code on the server.
2. How can attackers exploit file upload vulnerabilities to compromise a web application?
- By injecting SQL queries
- By uploading files with malicious executable code
- By encrypting data in transit
- By enhancing user authentication
Attackers can exploit file upload vulnerabilities by uploading files containing malicious executable code, leading to potential compromise.
3. What is a common security measure to mitigate file upload vulnerabilities?
- Implementing strong password policies
- Enforcing network firewalls
- Validating and restricting file types and sizes
- Increasing server bandwidth
Validating and restricting file types and sizes is a common security measure to mitigate file upload vulnerabilities.
4. In the context of file uploads, what is the purpose of file type validation?
- To improve server performance
- To encrypt data during transmission
- To ensure files are not corrupted
- To prevent uploading of malicious files
File type validation helps prevent the uploading of malicious files by ensuring that only allowed file types are accepted.
5. What is a potential consequence of inadequate input validation in file uploads?
- Improved data integrity
- Remote code execution
- Enhanced user experience
- Increased server bandwidth
Inadequate input validation in file uploads can lead to remote code execution, compromising the security of the web application.
6. How can the use of random file names contribute to the security of file uploads?
- It improves server performance
- It prevents directory listing attacks
- It enhances user authentication
- It encrypts data in transit
Using random file names helps prevent directory listing attacks, enhancing the security of file uploads.
7. What is the purpose of implementing a secure file storage location in the context of file uploads?
- To increase server bandwidth
- To improve data availability
- To prevent unauthorized access to uploaded files
- To enhance user authentication
A secure file storage location is implemented to prevent unauthorized access to uploaded files, ensuring their confidentiality.
8. How can content-disposition headers contribute to file download security?
- By increasing server performance
- By improving data integrity
- By specifying how browsers should handle file downloads
- By encrypting data during transmission
Content-disposition headers specify how browsers should handle file downloads, contributing to file download security.
9. In the context of file downloads, what is a potential risk associated with directory traversal attacks?
- Enhanced user experience
- Unauthorized access to sensitive files
- Improved server performance
- Increased data availability
Directory traversal attacks can lead to unauthorized access to sensitive files during the file download process.
10. How can a secure file download process contribute to web application security?
- By improving data availability
- By encrypting data during transmission
- By enhancing user authentication
- By preventing the execution of malicious code
A secure file download process can contribute to web application security by preventing the execution of malicious code that may be embedded in files.
11. What is the purpose of implementing file upload rate limiting in web applications?
- To improve server performance
- To enhance user experience
- To prevent denial-of-service attacks
- To increase data availability
File upload rate limiting helps prevent denial-of-service attacks by limiting the rate at which files can be uploaded, ensuring fair resource usage.
12. How can a lack of proper file extension validation contribute to file upload vulnerabilities?
- By increasing server performance
- By allowing the upload of files with malicious content
- By enhancing user authentication
- By improving data integrity
A lack of proper file extension validation can contribute to file upload vulnerabilities by allowing the upload of files with malicious content under a false extension.
13. What is the primary risk associated with direct object reference in the context of file downloads?
- Remote code execution
- Unauthorized access to sensitive files
- Increased data availability
- Enhanced user experience
Direct object reference in file downloads can lead to unauthorized access to sensitive files, posing a risk to the security of the web application.
14. How can the use of a Content Delivery Network (CDN) enhance file download security?
- By increasing server performance
- By encrypting data during transmission
- By distributing files across multiple servers
- By improving user authentication
A Content Delivery Network (CDN) enhances file download security by distributing files across multiple servers, improving availability and mitigating certain attacks.
15. What is the purpose of implementing a secure file upload API in a web application?
- To prevent directory traversal attacks
- To improve data integrity
- To enhance user authentication
- To enable safe interaction with external services
A secure file upload API allows safe interaction with external services, reducing the risk of vulnerabilities associated with file uploads.
16. In the context of file uploads, what is the role of client-side validation?
- To prevent denial-of-service attacks
- To enhance user experience
- To improve server performance
- To ensure the integrity of uploaded files
Client-side validation in file uploads enhances user experience by providing immediate feedback on the validity of uploaded files before reaching the server.
17. What is a potential consequence of insufficient file permission settings on uploaded files?
- Improved user experience
- Unauthorized access to sensitive data
- Enhanced server performance
- Increased data availability
Insufficient file permission settings on uploaded files can lead to unauthorized access to sensitive data, compromising the security of the web application.
18. How can the use of a Content Security Policy (CSP) header help mitigate file download vulnerabilities?
- By encrypting data during transmission
- By preventing the execution of malicious code in downloaded files
- By improving user authentication
- By increasing server bandwidth
A Content Security Policy (CSP) header can help mitigate file download vulnerabilities by preventing the execution of malicious code in downloaded files.
19. What is the purpose of validating file content, not just file extension, during the file upload process?
- To improve server performance
- To enhance user experience
- To prevent the upload of files with malicious content
- To increase data availability
Validating file content, not just the file extension, helps prevent the upload of files with malicious content, enhancing the security of the web application.
20. How can the use of secure hash algorithms contribute to file download security?
- By preventing denial-of-service attacks
- By improving server performance
- By enhancing user experience
- By ensuring the integrity of downloaded files
Secure hash algorithms contribute to file download security by ensuring the integrity of downloaded files, allowing verification against tampering or corruption.
