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M4—Insufficient Input/Output Validation

>Control Description

**Application Specific** Insufficient validation and sanitization of data from external sources, such as user inputs or network data, in a mobile application can introduce severe security vulnerabilities. Mobile apps that fail to properly validate and sanitize such data are at risk of being exploited through attacks specific to mobile environments, including SQL injection, Command Injection, and cross-site scripting (XSS) attacks. These vulnerabilities can have detrimental consequences, including unauthorized access to sensitive data, manipulation of app functionality, and potential compromise of the entire mobile system. Inadequate output validation can result in data corruption or presentation vulnerabilities, allowing malicious actors to inject malicious code or manipulate sensitive information displayed to users.

>Prevention & Mitigation Strategies

  1. 1.Validate and sanitize all user input using strict validation techniques; implement input length restrictions and reject unexpected or malicious data.
  2. 2.Properly sanitize output data to prevent cross-site scripting (XSS) attacks; use output encoding techniques when displaying or transmitting data.
  3. 3.Perform context-specific validation based on data context (e.g., file uploads, database queries) to prevent path traversal and injection attacks.
  4. 4.Implement data integrity checks to detect and prevent data corruption or unauthorized modifications.
  5. 5.Follow secure coding practices such as using parameterized queries and prepared statements to prevent SQL injection.
  6. 6.Conduct regular security assessments including penetration testing and code reviews to identify and address validation vulnerabilities.

>Attack Scenarios

#1

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>References

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