CWE-92: DEPRECATED: Improper Sanitization of Custom Special Characters
Learn about CWE-92 (DEPRECATED: Improper Sanitization of Custom Special Characters), its security impact, exploitation methods, and prevention guidelines.
What is DEPRECATED: Improper Sanitization of Custom Special Characters?
• Overview: CWE-92, now deprecated, referred to improper sanitization of custom special characters in software applications. It highlighted the risk of failing to correctly handle or filter special characters, which could lead to vulnerabilities.
• Exploitation Methods:
- Attackers could exploit this vulnerability by injecting malicious input containing special characters that are not properly sanitized.
- Common attack patterns included SQL injection, cross-site scripting (XSS), and command injection, exploiting the mishandling of special characters.
• Security Impact:
- Direct consequences included unauthorized data access, code execution, and compromised application integrity.
- Potential cascading effects could lead to broader system compromise, data breaches, and further exploitation of interconnected systems.
- Business impact might involve financial loss, reputational damage, legal liabilities, and loss of customer trust.
• Prevention Guidelines:
- Specific code-level fixes involve implementing robust input validation and output encoding for all user inputs.
- Security best practices include adopting a whitelist approach for input validation, using parameterized queries, and avoiding direct inclusion of user inputs in commands.
- Recommended tools and frameworks include security libraries like OWASP's ESAPI for input sanitization and encoding, as well as static code analysis tools to detect potential vulnerabilities.
Technical Details
Likelihood of Exploit: Not specified
Affected Languages: Not specified
Affected Technologies: Not specified